/**
 * SacredTexts AI - Stili
 * Design elegante ispirato a manoscritti antichi
 *
 * Palette colori:
 * - Sfondo principale: #1a1a2e
 * - Sfondo secondario: #16213e
 * - Accento dorato: #d4af37
 * - Accento dorato chiaro: #f4d03f
 * - Testo principale: #e8e8e8
 * - Testo secondario: #a0a0a0
 */

/* ===================================
   CSS CUSTOM PROPERTIES (Variabili)
   =================================== */
:root {
    /* Colori principali */
    --color-bg-primary: #1a1a2e;
    --color-bg-secondary: #16213e;
    --color-bg-tertiary: #0f0f1a;
    --color-bg-panel: #1e1e3a;
    --color-bg-hover: #252550;

    /* Accenti */
    --color-accent: #d4af37;
    --color-accent-light: #f4d03f;
    --color-accent-dark: #b8960c;
    --color-accent-glow: rgba(212, 175, 55, 0.3);

    /* Testo */
    --color-text-primary: #e8e8e8;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #8a8aa8;

    /* Stati */
    --color-success: #4ade80;
    --color-error: #f87171;
    --color-warning: #fbbf24;
    --color-info: #60a5fa;

    /* Bordi */
    --color-border: #2a2a4a;
    --color-border-light: #3a3a5a;

    /* Font */
    --font-display: 'Cinzel', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Dimensioni */
    --header-height: 60px;
    --panel-radius: 12px;
    --btn-radius: 8px;

    /* Transizioni */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Ombre */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-accent-glow);

    /* Z-index layers */
    --z-base: 1;
    --z-panel: 10;
    --z-sticky: 100;
    --z-modal: 1000;
    --z-toast: 2000;
}

/* ===================================
   RESET E BASE
   =================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
    /* Texture sottile di sfondo */
    background-image:
        radial-gradient(ellipse at 20% 80%, rgba(212, 175, 55, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(22, 33, 62, 0.8) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-bg-tertiary) 0%, var(--color-bg-primary) 100%);
    background-attachment: fixed;
}

/* Focus visibile per accessibilità */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Selezione testo */
::selection {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

/* Accessibilità: classe per nascondere visivamente ma mantenere per screen reader */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip link per accessibilità tastiera */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-bg-primary);
    padding: 8px 16px;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* ===================================
   TIPOGRAFIA
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.1rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-light);
    text-decoration: underline;
}

/* ===================================
   HEADER
   =================================== */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    height: var(--header-height);
    /* In standalone su iPhone con notch/Dynamic Island il contenuto non finisce sotto la status bar */
    box-sizing: content-box;
    padding-top: env(safe-area-inset-top, 0px);
    background: linear-gradient(180deg, var(--color-bg-tertiary) 0%, rgba(15, 15, 26, 0.95) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    height: 100%;
    margin: 0 auto;
    padding: 0 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
    text-shadow: 0 0 10px var(--color-accent-glow);
}

.logo-icon {
    font-size: 1.5rem;
    animation: pulse-glow 3s ease-in-out infinite;
}

.version-badge {
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--color-accent);
    background: rgba(212, 175, 55, 0.12);
    border: 1px solid rgba(212, 175, 55, 0.25);
    padding: 0.15rem 0.4rem;
    border-radius: 8px;
    letter-spacing: 0.03em;
    text-shadow: none;
    align-self: center;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; text-shadow: 0 0 10px var(--color-accent-glow); }
    50% { opacity: 0.8; text-shadow: 0 0 20px var(--color-accent-glow); }
}

.nav {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--btn-radius);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border);
    color: var(--color-accent);
}

.nav-btn.active {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ===================================
   MAIN LAYOUT
   =================================== */
.main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem;
    min-height: calc(100vh - var(--header-height));
}

@media (min-width: 768px) {
    .main {
        grid-template-columns: 350px 1fr;
        grid-template-rows: auto 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .panel-input {
        grid-column: 1;
        grid-row: 1;
    }

    .panel-visualization {
        grid-column: 2;
        grid-row: 1 / 3;
        min-height: 400px;
    }

    .panel-visualization .viz-container {
        flex: 1;
        height: auto;
        min-height: 350px;
        max-height: calc(100vh - var(--header-height) - 6rem);
    }

    .panel-results {
        grid-column: 1;
        grid-row: 2;
    }
}

@media (min-width: 1200px) {
    .main {
        grid-template-columns: 380px 1fr 350px;
        grid-template-rows: 1fr;
    }

    .panel-input {
        grid-column: 1;
        grid-row: 1;
    }

    .panel-visualization {
        grid-column: 2;
        grid-row: 1;
        min-height: 500px;
    }

    .panel-visualization .viz-container {
        flex: 1;
        height: auto;
        min-height: 400px;
        max-height: calc(100vh - var(--header-height) - 6rem);
    }

    .panel-results {
        grid-column: 3;
        grid-row: 1;
    }
}

/* Auto-scroll: risultati a tutta larghezza */
@media (min-width: 768px) {
    .main.scroll-fullwidth .panel-input,
    .main.scroll-fullwidth .panel-visualization {
        display: none;
    }

    .main.scroll-fullwidth .panel-results {
        grid-column: 1 / -1;
        max-width: 820px;
        margin: 0 auto;
        width: 100%;
    }
}

/* ===================================
   PANNELLI
   =================================== */
.panel {
    background: var(--color-bg-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--panel-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.05) 0%, transparent 100%);
    border-bottom: 1px solid var(--color-border);
}

.panel-header h2 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

.panel-body {
    padding: 1rem;
    flex: 1;
    overflow-y: auto;
}

.btn-collapse {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-collapse:hover {
    color: var(--color-accent);
}

.panel.collapsed .panel-body {
    display: none;
}

.panel.collapsed .btn-collapse svg {
    transform: rotate(180deg);
}

/* ===================================
   FORM ELEMENTS
   =================================== */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.input,
.textarea,
.select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--btn-radius);
    transition: all var(--transition-fast);
}

/* iOS Safari: sotto i 16px il focus su un campo provoca l'auto-zoom della pagina.
   Su mobile portiamo i campi a 16px senza ricorrere a user-scalable=no (dannoso per l'accessibilità). */
@media (max-width: 767px) {
    .input,
    .textarea,
    .select {
        font-size: 16px;
    }
}

.input:focus,
.textarea:focus,
.select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

.select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23a0a0a0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

.select option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.select optgroup {
    font-weight: 600;
    color: var(--color-accent);
}

.char-count {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: right;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group .input {
    flex: 1;
}

.help-text {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ===================================
   BOTTONI
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--btn-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-bg-primary);
    box-shadow: var(--shadow-md), 0 0 15px var(--color-accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 25px var(--color-accent-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--btn-radius);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-confidence-toggle.active {
    background: rgba(96, 165, 250, 0.15);
    border-color: var(--color-info);
    color: var(--color-info);
    box-shadow: 0 0 8px rgba(96, 165, 250, 0.3);
}

/* Contenitore pulsanti analisi */
.analyze-buttons {
    display: flex;
    gap: 0.75rem;
    align-items: stretch;
}

.btn-analyze {
    flex: 1;
    padding: 1rem;
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.05em;
}

.btn-analyze.loading .btn-text {
    opacity: 0;
}

.btn-analyze.loading .btn-loader {
    display: block;
}

.btn-cancel {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: transparent;
    border: 1px solid var(--color-error);
    color: var(--color-error);
    font-size: 0.875rem;
    white-space: nowrap;
}

.btn-cancel:hover {
    background: rgba(248, 113, 113, 0.1);
}

.btn-cancel svg {
    flex-shrink: 0;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    position: absolute;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.btn-close:hover {
    color: var(--color-error);
}

/* ===================================
   VISUALIZZAZIONE
   =================================== */
.viz-controls {
    display: flex;
    gap: 0.25rem;
}

.viz-container {
    position: relative;
    min-height: 280px;
    height: 45vh;
    max-height: 350px;
    flex: 1;
    background: var(--color-bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
}

#p5-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

#p5-canvas canvas {
    display: block;
    /* Rimosso width/height forzati per evitare conflitti con p5.js */
}

.viz-empty,
.viz-loader {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    text-align: center;
    color: var(--color-text-muted);
}

.viz-empty-icon {
    font-size: 3rem;
    opacity: 0.3;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.viz-loader {
    background: rgba(15, 15, 26, 0.9);
    z-index: 10;
}

.viz-loader.hidden {
    display: none;
}

.sacred-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 0 0 15px var(--color-accent-glow);
}

.analysis-phase {
    font-size: 0.9rem;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    transition: opacity 0.4s ease;
}

.analysis-fact {
    max-width: 340px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    opacity: 0;
    line-height: 1.5;
    font-style: italic;
    transition: opacity 0.5s ease;
    min-height: 2.5em;
    text-align: center;
}

.analysis-fact.visible {
    opacity: 1;
}

/* ===================================
   RISULTATI
   =================================== */
.results-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    color: var(--color-text-muted);
    text-align: center;
    font-style: italic;
}

.results-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Header Fonte del testo analizzato */
.result-source-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.08) 0%, rgba(212, 175, 55, 0.02) 100%);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--panel-radius);
    margin-bottom: 1rem;
}

.result-source-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
    text-shadow: 0 0 8px var(--color-accent-glow);
    flex-shrink: 0;
}

.result-source-info {
    flex: 1;
    min-width: 0;
}

.result-source-title {
    font-family: var(--font-display);
    font-size: 0.95rem;
    color: var(--color-text-primary);
    margin: 0 0 0.2rem 0;
    line-height: 1.3;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.result-source-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.result-source-tradition {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.15rem 0.5rem;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: rgba(212, 175, 55, 0.15);
    color: var(--color-accent);
    border-radius: 10px;
}

.result-source-section {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.result-section {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.result-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.result-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--color-accent);
}

.result-icon {
    font-size: 1.1rem;
}

.result-body {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.result-body p {
    margin-bottom: 0.75rem;
}

.result-body ul {
    list-style: none;
    padding-left: 0;
}

.result-body li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
}

/* Contesto Storico Approfondito */
.context-detailed {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.context-item {
    padding: 0.75rem 1rem;
    background: var(--color-bg-secondary);
    border-radius: var(--btn-radius);
    border-left: 3px solid var(--color-accent);
}

.context-item h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0 0.5rem 0;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.context-icon {
    font-size: 1rem;
}

.context-item p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.result-body li::before {
    content: '◇';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: 0.7rem;
}

/* Parole chiave */
.keywords-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.keyword-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.keyword-tag:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-hover);
    box-shadow: 0 0 10px var(--color-accent-glow);
}

.keyword-tag.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg-primary);
}

/* Research Gaps / Piste di Ricerca */
/* Sezione Piste di Ricerca evidenziata */
.research-section-highlight {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.04) 0%, rgba(99, 102, 241, 0.04) 100%);
    border: 1px solid rgba(96, 165, 250, 0.15);
    border-radius: var(--panel-radius);
    padding: 1rem 1.1rem;
}

.research-intro {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 0.85rem;
    padding: 0.6rem 0.75rem;
    background: rgba(96, 165, 250, 0.06);
    border-radius: var(--btn-radius);
    border-left: 2px solid rgba(96, 165, 250, 0.3);
}

.research-intro strong {
    color: var(--color-info);
}

.research-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.research-item {
    position: relative;
    padding: 0.9rem 1rem 0.9rem 2.8rem;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(96, 165, 250, 0.03) 100%);
    border-radius: var(--btn-radius);
    border-left: 3px solid var(--color-info);
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.research-item::before {
    content: '?';
    position: absolute;
    left: 0.75rem;
    top: 0.9rem;
    width: 1.3rem;
    height: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-info);
    border: 1.5px solid var(--color-info);
    border-radius: 50%;
    background: rgba(96, 165, 250, 0.08);
}

.research-item .research-question {
    display: block;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 0.35rem;
}

.research-item:hover {
    background: linear-gradient(135deg, var(--color-bg-hover) 0%, rgba(96, 165, 250, 0.08) 100%);
    border-left-color: var(--color-accent);
    box-shadow: 0 2px 16px var(--color-accent-glow);
    transform: translateX(2px);
}

.research-item:hover::before {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(212, 175, 55, 0.1);
}

.research-item .research-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.45rem;
    font-size: 0.73rem;
}

.research-item .research-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--color-text-muted);
    opacity: 0.6;
    transition: all var(--transition-fast);
}

.research-item .research-action-btn.action-analyze {
    color: var(--color-info);
    opacity: 0.75;
    font-weight: 500;
}

.research-item:hover .research-action-btn {
    opacity: 1;
}

.research-item:hover .research-action-btn.action-analyze {
    color: var(--color-accent);
}

/* Research highlight animation (after auto-scroll) */
.research-item.research-highlight {
    animation: researchPulse 2s ease-in-out 2;
    border-left-color: var(--color-accent);
}

@keyframes researchPulse {
    0%, 100% {
        background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(96, 165, 250, 0.03) 100%);
        box-shadow: none;
    }
    50% {
        background: linear-gradient(135deg, rgba(212, 175, 55, 0.08) 0%, rgba(96, 165, 250, 0.06) 100%);
        box-shadow: 0 0 20px rgba(212, 175, 55, 0.15), inset 0 0 12px rgba(212, 175, 55, 0.05);
    }
}

.research-item.research-highlight::before {
    animation: researchIconPulse 2s ease-in-out 2;
}

@keyframes researchIconPulse {
    0%, 100% { color: var(--color-info); border-color: rgba(96, 165, 250, 0.3); }
    50% { color: var(--color-accent); border-color: var(--color-accent); }
}

/* ===================================
   SWITCH TOGGLE (usato in vari posti)
   =================================== */

/* Switch toggle */
.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 26px;
    transition: all var(--transition-fast);
}

.slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    left: 2px;
    bottom: 2px;
    background: var(--color-text-secondary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.switch input:checked + .slider {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.switch input:checked + .slider::before {
    transform: translateX(22px);
    background: var(--color-bg-primary);
}

/* Slider volume */
.audio-slider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.audio-slider input[type="range"] {
    width: 100px;
    height: 4px;
    appearance: none;
    background: var(--color-border);
    border-radius: 2px;
    cursor: pointer;
}

.audio-slider input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 8px var(--color-accent-glow);
}

/* Preset buttons */
.audio-presets {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.preset-btn {
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.preset-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-text-primary);
}

.preset-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg-primary);
}

/* Audio status text */
#audio-status-text {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

/* ===================================
   MODAL
   =================================== */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.visible {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    background: var(--color-bg-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--panel-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal.visible .modal-content {
    transform: scale(1);
}

.modal-large {
    max-width: 600px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.05) 0%, transparent 100%);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: 1.1rem;
    color: var(--color-accent);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    flex: 1;
    min-height: 0;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

/* Settings modal specifico */
.settings-info {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--color-bg-secondary);
    border-radius: var(--btn-radius);
    font-size: 0.85rem;
}

.settings-info h4 {
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--color-accent);
}

.settings-info ol {
    padding-left: 1.25rem;
    margin-bottom: 1rem;
}

.settings-info li {
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
}

.privacy-note {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-success);
    font-size: 0.8rem;
}

/* Sezione impostazioni con toggle */
.settings-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.settings-section h4 {
    margin-bottom: 1rem;
    font-family: var(--font-display);
    color: var(--color-accent);
    font-size: 0.95rem;
}

.toggle-setting {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.toggle-label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.toggle-label span {
    color: var(--color-text-primary);
    font-weight: 500;
}

.toggle-description {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    line-height: 1.4;
}

.disclaimer-note {
    padding: 0.75rem;
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: var(--btn-radius);
    color: var(--color-warning);
    font-size: 0.75rem;
    line-height: 1.5;
}

.disclaimer-note strong {
    color: inherit;
}

/* Etichetta trasparenza contenuti generati con IA (art. 50 AI Act) */
.ai-content-label {
    margin-top: 1.25rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    line-height: 1.4;
}

/* ===================================
   AUDIO
   =================================== */

.btn-audio {
    position: relative;
    font-size: 1rem;
    min-width: 32px;
}

.btn-audio.active {
    color: var(--color-accent);
    background: rgba(212, 175, 55, 0.15);
}

.btn-audio.active .audio-icon {
    animation: audio-glow 2s ease-in-out infinite;
}

@keyframes audio-glow {
    0%, 100% { text-shadow: 0 0 4px var(--color-accent-glow); }
    50% { text-shadow: 0 0 12px var(--color-accent-glow), 0 0 20px rgba(212, 175, 55, 0.2); }
}

.audio-icon {
    font-size: 1.1rem;
}

.btn-audio-mode {
    font-size: 0.85rem;
    min-width: 28px;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.btn-audio-mode:hover {
    opacity: 1;
}

.btn-enhanced-mode {
    font-size: 0.75rem;
    min-width: 26px;
    opacity: 0.7;
    transition: all 0.2s;
    border-radius: 4px;
}

.btn-enhanced-mode:hover {
    opacity: 1;
}

.btn-enhanced-mode.active {
    opacity: 1;
    background: var(--color-primary, #6366f1);
    color: white;
}

.btn-enhanced-mode #enhanced-mode-label {
    font-weight: 600;
}

.audio-mode-icon {
    font-size: 1rem;
}


.audio-info-bar {
    width: 100%;
    padding: 3px 8px;
    font-size: 0.65rem;
    color: var(--color-text-muted, #888);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0.8;
    letter-spacing: 0.02em;
}

.audio-info-bar.hidden {
    display: none;
}

.traditions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.tradition {
    padding: 0.5rem 0.75rem;
    background: var(--color-bg-secondary);
    border-radius: var(--btn-radius);
    font-size: 0.85rem;
    text-align: center;
}

/* ===================================
   TOOLTIP
   =================================== */
.tooltip {
    position: fixed;
    z-index: var(--z-modal);
    max-width: 280px;
    padding: 0.75rem 1rem;
    background: var(--color-bg-panel);
    border: 1px solid var(--color-accent);
    border-radius: var(--btn-radius);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all var(--transition-fast);
}

.tooltip.visible {
    opacity: 1;
    visibility: visible;
}

.tooltip-content {
    font-size: 0.85rem;
    color: var(--color-text-primary);
    line-height: 1.5;
}

.tooltip-content h4 {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-accent);
}

/* ===================================
   TOAST NOTIFICATIONS
   =================================== */
.toast-container {
    position: fixed;
    bottom: 80px;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: var(--z-toast);
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--btn-radius);
    box-shadow: var(--shadow-lg);
    animation: slide-in 0.3s ease-out;
}

@keyframes slide-in {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-color: var(--color-success);
}

.toast.error {
    border-color: var(--color-error);
}

.toast.warning {
    border-color: var(--color-warning);
}

.toast.info {
    border-color: var(--color-info);
}

.toast-icon {
    font-size: 1.25rem;
}

.toast-message {
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

.toast.api-test-result {
    flex-direction: row;
    align-items: flex-start;
    max-width: 400px;
    padding: 1rem;
}

.toast.api-test-result .toast-content {
    flex: 1;
    line-height: 1.4;
}

.toast.api-test-result .toast-content strong {
    color: var(--color-success);
}

.toast.api-test-result .toast-content small {
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ===================================
   SCROLLBAR PERSONALIZZATA
   =================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ===================================
   UTILITIES
   =================================== */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===================================
   DRAG QUOTE TO CANVAS
   =================================== */

#p5-canvas.drop-target {
    outline: 3px dashed var(--color-accent);
    outline-offset: -3px;
    background: rgba(212, 175, 55, 0.05);
}

#p5-canvas.drop-target::after {
    content: 'Rilascia per creare annotazione';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 1rem 2rem;
    background: rgba(25, 25, 45, 0.9);
    border: 1px solid var(--color-accent);
    border-radius: var(--btn-radius);
    color: var(--color-accent);
    font-size: 0.9rem;
    pointer-events: none;
    z-index: 100;
}

/* Badge categoria annotazione */
.text-node-badge.cat-annotazione {
    background: rgba(255, 193, 7, 0.2);
    color: rgb(255, 213, 57);
    border: 1px solid rgba(255, 193, 7, 0.4);
}

/* Cursore grab per testo selezionabile */
#sacred-text::selection,
.split-text-content::selection {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

/* ===================================
   SPLIT VIEW - Vista Sincronizzata
   =================================== */

.btn-split-toggle {
    margin-left: auto;
    margin-right: 0.5rem;
}

/* Settings nella viz toolbar: nascosto di default (desktop usa quello nella nav) */
.btn-settings-viz {
    display: none;
    margin-right: 0.5rem;
}

.btn-split-toggle.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg-primary);
}

.split-view-container {
    display: none;
    height: 100%;
    min-height: 400px;
}

.split-view-container.visible {
    display: flex;
}

.split-view-text {
    flex: 0 0 40%;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    overflow: hidden;
}

.split-text-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.split-text-header h3 {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    margin: 0;
}

.split-text-info {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.split-text-content {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-text-primary);
}

.split-view-divider {
    width: 4px;
    background: var(--color-border);
    cursor: col-resize;
    transition: background var(--transition-fast);
}

.split-view-divider:hover {
    background: var(--color-accent);
}

.split-view-graph {
    flex: 1;
    position: relative;
    min-width: 300px;
}

/* Inline Badges nel testo */
.text-node-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.15rem 0.5rem;
    margin: 0 0.15rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
    vertical-align: middle;
}

.text-node-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.text-node-badge.active {
    transform: scale(1.1);
    box-shadow: 0 0 12px currentColor;
}

/* Colori badge per categoria */
.text-node-badge.cat-teologia {
    background: rgba(70, 130, 230, 0.2);
    color: rgb(100, 160, 255);
    border: 1px solid rgba(70, 130, 230, 0.4);
}

.text-node-badge.cat-etica {
    background: rgba(46, 204, 113, 0.2);
    color: rgb(76, 234, 143);
    border: 1px solid rgba(46, 204, 113, 0.4);
}

.text-node-badge.cat-mistica {
    background: rgba(155, 89, 182, 0.2);
    color: rgb(185, 119, 212);
    border: 1px solid rgba(155, 89, 182, 0.4);
}

.text-node-badge.cat-pratica {
    background: rgba(230, 126, 34, 0.2);
    color: rgb(255, 156, 64);
    border: 1px solid rgba(230, 126, 34, 0.4);
}

/* Highlight del testo associato */
.text-highlight {
    background: rgba(212, 175, 55, 0.15);
    border-radius: 3px;
    padding: 0 2px;
    transition: background var(--transition-fast);
}

.text-highlight.active {
    background: rgba(212, 175, 55, 0.35);
}

/* Responsive Split View */
@media (max-width: 900px) {
    .split-view-container {
        flex-direction: column;
    }

    .split-view-text {
        flex: 0 0 auto;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .split-view-divider {
        width: 100%;
        height: 4px;
        cursor: row-resize;
    }

    .split-view-graph {
        min-height: 300px;
        height: 300px;
    }
}

/* ===================================
   READING PATH - Esplorazione Guidata
   =================================== */

/* Controlli Reading Path */
.viz-controls-divider {
    width: 1px;
    height: 24px;
    background: var(--color-border);
    margin: 0 0.5rem;
}

/* Responsive Controls */
@media (max-width: 767px) {
    .viz-controls-divider {
        display: none;
    }

    .reading-path-controls {
        gap: 0.15rem;
    }
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 767px) {
    .header-content {
        padding: 0 0.5rem;
    }

    .logo {
        font-size: 0.75rem;
        gap: 0.2rem;
        min-width: 0;
        overflow: hidden;
        white-space: nowrap;
    }

    .logo-icon {
        font-size: 1.1rem;
        flex-shrink: 0;
    }

    .version-badge {
        display: none;
    }

    .nav {
        gap: 0.1rem;
        flex-shrink: 0;
    }

    .nav-btn {
        width: 30px;
        height: 30px;
        font-size: 0.7rem;
    }

    .nav-btn svg {
        width: 17px;
        height: 17px;
    }

    .main {
        padding: 0.5rem;
        gap: 0.5rem;
    }

    /* Riordina pannelli: grafo primo, input secondo, risultati terzo */
    .panel-visualization {
        order: 1;
    }
    .panel-input {
        order: 2;
    }
    .panel-results {
        order: 3;
    }

    .panel-header {
        padding: 0.5rem 0.75rem;
    }

    .panel-body {
        padding: 0.5rem 0.75rem;
    }

    /* Textarea più compatto */
    .textarea {
        min-height: 80px;
    }

    /* Nasconde settings dalla nav su mobile (è nella viz toolbar) */
    #btn-settings {
        display: none;
    }

    /* Mostra settings nella viz toolbar su mobile */
    .btn-settings-viz {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
    }

    /* --- Grafo: header su due righe con controlli visibili --- */
    .panel-visualization .panel-header {
        flex-wrap: wrap;
        gap: 0.3rem;
    }

    .panel-visualization .panel-header h2 {
        flex: 1;
        min-width: 0;
        font-size: 0.75rem;
    }

    .panel-visualization .viz-controls {
        width: 100%;
        justify-content: center;
        gap: 0.2rem;
        flex-wrap: wrap;
    }

    .panel-visualization .viz-controls .btn-icon {
        width: 36px;
        height: 36px;
    }

    .panel-visualization .viz-controls .btn-icon svg {
        width: 16px;
        height: 16px;
    }

    /* Grafo più grande su smartphone moderni */
    .viz-container {
        min-height: 250px;
        height: 45vh;
        max-height: 45vh;
    }

    .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .audio-body {
        flex-direction: column;
        align-items: flex-start;
    }

    .traditions-grid {
        grid-template-columns: 1fr;
    }

    .toast-container {
        left: 1rem;
        right: 1rem;
        bottom: 100px;
    }

    .toast {
        width: 100%;
    }
}

/* Animazione per elementi che entrano in vista */
@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fade-in-up 0.4s ease-out;
}

/* ===================================
   CRONOLOGIA SIDEBAR
   =================================== */
.history-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    max-width: 100vw;
    height: 100vh;
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    z-index: var(--z-modal);
    display: flex;
    flex-direction: column;
    transition: right var(--transition-normal);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.4);
}

.history-sidebar.visible {
    right: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-primary);
}

.sidebar-header h2 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-accent);
    margin: 0;
}

.sidebar-toolbar {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: 0.75rem;
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: 0.6rem 0.75rem 0.6rem 2.5rem;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--btn-radius);
    color: var(--color-text-primary);
    font-size: 0.875rem;
}

.search-box input::placeholder {
    color: var(--color-text-muted);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--btn-radius);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.filter-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg-primary);
}

.filter-btn svg {
    flex-shrink: 0;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.sidebar-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-primary);
}

.history-count {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
}

.btn-sm svg {
    width: 14px;
    height: 14px;
}

/* History Items */
.history-item {
    background: var(--color-bg-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--panel-radius);
    padding: 0.875rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.history-item:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-hover);
}

.history-item.favorite {
    border-color: var(--color-accent-dark);
}

.history-item.favorite .btn-favorite-item {
    color: var(--color-accent);
}

.history-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.history-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.history-item-actions {
    display: flex;
    gap: 0.25rem;
}

.btn-icon-sm {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: transparent;
    border: none;
    border-radius: var(--btn-radius);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon-sm:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.btn-delete-item:hover {
    color: var(--color-error);
}

.btn-favorite-item:hover {
    color: var(--color-accent);
}

.history-item-body {
    margin-bottom: 0.5rem;
}

.history-preview {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.history-item-footer {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.history-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.5rem;
    background: var(--color-bg-secondary);
    border-radius: 4px;
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

.history-badge.tradition {
    background: rgba(212, 175, 55, 0.15);
    color: var(--color-accent);
}

/* History Empty State */
.history-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
}

.history-empty .empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.history-empty p {
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
}

.history-empty small {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.history-error {
    padding: 2rem;
    text-align: center;
    color: var(--color-error);
}

/* Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* Nav Badge */
.nav-btn {
    position: relative;
}

.nav-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: var(--color-bg-primary);
    font-size: 0.65rem;
    font-weight: 600;
    border-radius: 10px;
    padding: 0 4px;
}

/* ===================================
   WELCOME SPLASH
   =================================== */
.welcome-splash {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 20, 0.92);
    backdrop-filter: blur(16px);
    opacity: 1;
    transition: opacity 0.4s ease;
}

.welcome-splash.hiding {
    opacity: 0;
    pointer-events: none;
}

.welcome-splash-content {
    text-align: center;
    max-width: 360px;
    padding: 2.5rem 2rem;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(212, 175, 55, 0.08);
    animation: splash-enter 0.5s ease-out;
}

@keyframes splash-enter {
    from { transform: scale(0.9) translateY(20px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}

.welcome-splash-icon {
    font-size: 3rem;
    color: var(--color-accent);
    text-shadow: 0 0 20px var(--color-accent-glow);
    margin-bottom: 0.5rem;
    animation: pulse-glow 3s ease-in-out infinite;
}

.welcome-splash-title {
    font-family: var(--font-display, 'Georgia', serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
    letter-spacing: 0.04em;
}

.welcome-splash-version {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    background: rgba(212, 175, 55, 0.12);
    border: 1px solid rgba(212, 175, 55, 0.3);
    padding: 0.2rem 0.65rem;
    border-radius: 10px;
    margin-bottom: 0.75rem;
    letter-spacing: 0.05em;
}

.welcome-splash-subtitle {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.welcome-splash-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.btn-welcome-update {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-hover);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-welcome-update:hover {
    color: var(--color-accent);
    border-color: rgba(212, 175, 55, 0.3);
    background: rgba(212, 175, 55, 0.08);
}

.btn-welcome-update.checking {
    pointer-events: none;
    opacity: 0.7;
}

.btn-welcome-update.checking svg {
    animation: spin-update 1s linear infinite;
}

@keyframes spin-update {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.welcome-update-status {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    min-height: 1.1em;
}

.welcome-update-status.up-to-date {
    color: var(--color-success);
}

.welcome-update-status.update-available {
    color: var(--color-info);
    font-weight: 500;
}

.welcome-splash-dismiss {
    padding: 0.8rem 3rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-fast);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.welcome-splash-dismiss:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--color-accent-glow);
}

/* ===================================
   OFFLINE BANNER
   =================================== */
/* Update Banner */
.update-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: calc(var(--z-toast) + 1);
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
}

.update-banner.visible {
    transform: translateY(0);
}

.update-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.65rem 1rem;
    background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
    color: #0f0f1a;
    font-size: 0.875rem;
    font-weight: 600;
}

.update-banner-content svg {
    flex-shrink: 0;
}

.btn-update {
    padding: 0.35rem 1rem;
    background: #0f0f1a;
    color: var(--color-accent);
    border: none;
    border-radius: var(--btn-radius);
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-update:hover {
    background: #1a1a2e;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.btn-close-update {
    background: none;
    border: none;
    color: #0f0f1a;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0 0.25rem;
    opacity: 0.7;
    line-height: 1;
}

.btn-close-update:hover {
    opacity: 1;
}

/* Cache settings */
.cache-version-info {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.75rem;
}

.cache-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.85rem;
    font-size: 0.78rem;
}

.offline-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, #dc2626, #991b1b);
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    z-index: var(--z-toast);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.offline-banner.visible {
    transform: translateY(0);
}

.offline-banner svg {
    flex-shrink: 0;
}

/* Disabled button state */
.btn-analyze.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-analyze.disabled:hover {
    background: var(--color-accent);
    transform: none;
    box-shadow: none;
}

/* Slide out animation */
@keyframes slide-out {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(20px);
    }
}

/* ===================================
   RESPONSIVE - SMALL PHONES
   =================================== */
@media (max-width: 400px) {
    .nav-btn {
        width: 26px;
        height: 26px;
    }

    .nav-btn svg {
        width: 15px;
        height: 15px;
    }

    .logo {
        font-size: 0.65rem;
    }

    .logo-icon {
        font-size: 0.9rem;
    }
}

/* ===================================
   RESPONSIVE - SIDEBAR
   =================================== */
@media (max-width: 480px) {
    .history-sidebar {
        width: 100vw;
        right: -100vw;
    }

    .sidebar-header h2 {
        font-size: 1rem;
    }

    .history-item {
        padding: 0.75rem;
    }

    /* Extra-small: controlli grafo ancora più compatti */
    .panel-visualization .viz-controls .btn-icon {
        width: 28px;
        height: 28px;
    }

    .panel-visualization .viz-controls .btn-icon svg {
        width: 14px;
        height: 14px;
    }

    .panel-visualization .panel-header h2 {
        font-size: 0.65rem;
        letter-spacing: 0.05em;
    }

    .panel-visualization .reading-path-controls {
        gap: 0.1rem;
    }

    .path-progress {
        font-size: 0.65rem;
    }
}

/* ===================================
   NODE DETAIL SIDEBAR
   =================================== */
.node-detail-sidebar {
    position: fixed;
    top: 0;
    right: -360px;
    width: 340px;
    max-width: 90vw;
    height: 100vh;
    background: var(--color-bg-panel);
    border-left: 1px solid var(--color-border);
    z-index: var(--z-modal);
    display: flex;
    flex-direction: column;
    transition: right var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.node-detail-sidebar.visible {
    right: 0;
}

.node-detail-sidebar .sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.node-detail-sidebar .sidebar-header h2 {
    font-size: 1rem;
    font-family: var(--font-display);
    color: var(--color-accent);
    margin: 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.4;
}

.node-detail-sidebar .sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
}

.node-detail-category {
    margin-bottom: 1.25rem;
}

.category-badge {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.category-badge.cat-teologia {
    background: rgba(70, 130, 230, 0.2);
    color: rgb(120, 170, 255);
    border: 1px solid rgba(70, 130, 230, 0.4);
}

.category-badge.cat-etica {
    background: rgba(46, 204, 113, 0.2);
    color: rgb(100, 220, 150);
    border: 1px solid rgba(46, 204, 113, 0.4);
}

.category-badge.cat-mistica {
    background: rgba(155, 89, 182, 0.2);
    color: rgb(190, 140, 220);
    border: 1px solid rgba(155, 89, 182, 0.4);
}

.category-badge.cat-pratica {
    background: rgba(230, 126, 34, 0.2);
    color: rgb(255, 170, 100);
    border: 1px solid rgba(230, 126, 34, 0.4);
}

.category-badge.cat-generale {
    background: rgba(212, 175, 55, 0.2);
    color: var(--color-accent);
    border: 1px solid rgba(212, 175, 55, 0.4);
}

.node-detail-section {
    margin-bottom: 1.5rem;
}

.node-detail-section h3 {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.node-detail-section p {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    margin: 0;
    line-height: 1.5;
}

.node-detail-section blockquote {
    margin: 0;
    padding: 0.75rem 1rem;
    background: var(--color-bg-secondary);
    border-left: 3px solid var(--color-accent);
    border-radius: 0 var(--btn-radius) var(--btn-radius) 0;
    font-style: italic;
    color: var(--color-text-primary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.btn-copy-quote {
    margin-top: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.node-children-list,
.node-refs-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.node-children-list li,
.node-refs-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.35rem;
    background: var(--color-bg-secondary);
    border-radius: var(--btn-radius);
    font-size: 0.85rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.node-children-list li:hover,
.node-refs-list li:hover {
    background: var(--color-bg-hover);
    transform: translateX(4px);
}

.node-children-list li::before {
    content: '•';
    color: var(--color-accent);
    font-weight: bold;
}

.node-refs-list li .ref-type {
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    margin-left: auto;
}

.node-detail-actions {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: 0.5rem;
}

.node-detail-actions .btn {
    flex: 1;
    justify-content: center;
}

.node-detail-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.node-detail-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* Responsive */
@media (max-width: 480px) {
    .node-detail-sidebar {
        width: 100vw;
        right: -100vw;
    }
}

/* ===================================
   EXPORT DROPDOWN
   =================================== */
.export-dropdown {
    position: relative;
    margin-left: auto;
}

.btn-export {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--btn-radius);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-export:hover {
    background: var(--color-bg-hover);
    color: var(--color-accent);
}

.btn-export.active {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.export-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    min-width: 220px;
    background: var(--color-bg-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--panel-radius);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.export-dropdown.open .export-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.export-menu-header {
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.export-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.export-option:hover {
    background: var(--color-bg-hover);
}

.export-option:last-child {
    border-radius: 0 0 var(--panel-radius) var(--panel-radius);
}

.export-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: var(--color-bg-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
}

.export-label {
    font-weight: 500;
    font-size: 0.9rem;
}

.export-desc {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.export-option:hover .export-icon {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

/* ===================================
   CINEMATIC BUILD OVERLAY
   =================================== */
.cinematic-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: #0a0a14;
    display: flex;
    flex-direction: column;
}

.cinematic-canvas {
    flex: 1;
    overflow: hidden;
    position: relative;
    width: 100%;
    min-height: 0;
}

.cinematic-canvas canvas {
    display: block;
}

.cinematic-info {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: white;
    font-family: var(--font-display);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
    max-width: 80%;
}

.cinematic-info.visible {
    opacity: 1;
}

.cinematic-label {
    font-size: 1.4rem;
    display: block;
    margin-bottom: 0.3rem;
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}

.cinematic-counter {
    font-size: 0.8rem;
    opacity: 0.5;
    font-family: var(--font-body);
}

.cinematic-skip {
    position: absolute;
    bottom: 24px;
    right: 24px;
    padding: 0.6rem 1.5rem;
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-body);
    z-index: 10000;
    transition: all var(--transition-fast);
}

.cinematic-skip:hover {
    background: rgba(212, 175, 55, 0.3);
    transform: translateY(-1px);
}

@media (max-width: 767px) {
    .cinematic-label {
        font-size: 1.1rem;
    }
    .cinematic-info {
        bottom: 70px;
    }
    .cinematic-skip {
        bottom: 16px;
        right: 16px;
        font-size: 0.8rem;
        padding: 0.5rem 1rem;
    }
}

/* ===================================
   SCROLL SPEED CONTROL
   =================================== */
.scroll-speed-control {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.6rem;
    background: rgba(15, 15, 26, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 12px;
    opacity: 1;
    transition: opacity 0.4s ease;
}

.scroll-speed-control.hidden {
    opacity: 0;
    pointer-events: none;
}

.scroll-speed-btn {
    padding: 0.3rem 0.7rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--color-text-muted);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
    font-family: var(--font-body);
    transition: all 0.2s ease;
}

.scroll-speed-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.scroll-speed-btn.active {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--color-accent);
    color: var(--color-accent);
    font-weight: 600;
}

.scroll-speed-playpause,
.scroll-speed-stop {
    padding: 0.3rem 0.5rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--color-text-muted);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
    margin-left: 0.2rem;
    transition: all 0.2s ease;
}

.scroll-speed-playpause:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.scroll-speed-stop:hover {
    border-color: #ef4444;
    color: #ef4444;
}

@media (max-width: 767px) {
    .scroll-speed-control {
        bottom: 16px;
        padding: 0.3rem 0.5rem;
    }
    .scroll-speed-btn,
    .scroll-speed-playpause,
    .scroll-speed-stop {
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
    }
}

/* ===================================
   FOOTER
   =================================== */
.app-footer {
    border-top: 1px solid var(--color-border);
    background: linear-gradient(180deg, transparent, rgba(15, 15, 26, 0.8));
    padding: 2rem 1rem;
    text-align: center;
    margin-top: 2rem;
}

.footer-title {
    font-family: 'Cinzel', serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent);
}

.footer-desc {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.footer-credit {
    margin-top: 1rem;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.footer-author {
    margin-top: 0.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.footer-author a {
    color: var(--color-accent);
    text-decoration: none;
}

.footer-author a:hover {
    text-decoration: underline;
}


.footer-legal {
    display: inline-block;
    margin-top: 0.75rem;
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    text-decoration: underline;
}

.footer-legal:hover {
    opacity: 1;
    color: var(--color-accent);
}

/* Print styles */
@media print {
    .header,
    .btn-audio,
    .btn-audio-mode,
    .modal,
    .tooltip,
    .toast-container,
    .nav,
    .viz-controls,
    .btn-collapse,
    .export-dropdown {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .panel {
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}