/* styles.css - Nexus Web Sober Minimal Dark Theme (Graphite & Slate) */
:root {
    --bg-main: #0e1015;
    --bg-surface: #15181e;
    --bg-card: #1b1e26;
    --bg-card-hover: #222630;
    --border-color: #272a33;
    --border-subtle: #1e2129;
    --border-hover: #383d4a;
    --border-glow: #e2e8f0;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent-cyan: #e2e8f0;
    --accent-blue: #64748b;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-amber: #f59e0b;
    --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;

    /* SIZING & RESPONSIVE DYNAMIQUES */
    --card-max-width: 1180px;
    --card-height: clamp(550px, 75vh, 830px);
    --main-max-width: 1550px;
    --font-scale: 1.0;
}

/* MODES DE TAILLE D'ÉCRAN SÉLECTIONNABLES */
body[data-display-size="standard"] {
    --card-max-width: 880px;
    --card-height: clamp(520px, 70vh, 720px);
    --main-max-width: 1200px;
}

body[data-display-size="large"] {
    --card-max-width: 1180px;
    --card-height: clamp(560px, 75vh, 830px);
    --main-max-width: 1600px;
}

body[data-display-size="full"] {
    --card-max-width: min(95vw, 1750px);
    --card-height: clamp(580px, 80vh, 880px);
    --main-max-width: 98vw;
}

/* THEME GLOBAL & SCROLLBARS SOMBRES */
html {
    color-scheme: dark;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    scrollbar-width: thin;
    scrollbar-color: #282c37 #0e1015;
}

/* Scrollbars modernes Webkit (Edge, Chrome) */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #0e1015;
}

::-webkit-scrollbar-thumb {
    background: #282c37;
    border-radius: 4px;
    border: 2px solid #0e1015;
}

::-webkit-scrollbar-thumb:hover {
    background: #3e4453;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* NAVBAR (Barre de navigation principale) */
.navbar {
    height: 64px;
    background: rgba(21, 24, 30, 0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.brand {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: 2px;
    color: #fff;
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    transition: opacity 0.2s ease;
}

.brand:hover {
    opacity: 0.85;
}

.search-trigger {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0 18px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    width: clamp(340px, 32vw, 520px);
    white-space: nowrap;
    flex-shrink: 0;
}

.search-trigger:hover {
    border-color: #4b5263;
    color: var(--text-primary);
}

.search-trigger span:first-of-type {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.kbd-badge {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-tabs {
    display: flex;
    gap: 6px;
}

.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.tab-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.08);
}

.tab-btn.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

/* BOUTON & SECTION PARAMÈTRES (AFFICHAGE, ZOOM, RÉVISION) */
.settings-wrapper {
    position: relative;
}

.settings-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 7px 13px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

.settings-nav-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.2);
}

.settings-nav-btn.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.settings-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 320px;
    background: #14171f;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
    padding: 16px;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.settings-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.settings-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 12px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
}

.settings-menu-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.2px;
}

.settings-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    line-height: 1;
    padding: 2px 6px;
    border-radius: 4px;
    transition: color 0.15s;
}

.settings-close-btn:hover {
    color: #fff;
}

.settings-item-group {
    margin-bottom: 14px;
}

.settings-item-group:last-child {
    margin-bottom: 0;
}

.settings-item-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 8px;
}

.settings-item-title {
    font-size: 0.78rem;
    font-weight: 700;
    color: #cbd5e1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.settings-item-subtitle {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.size-toggle-group {
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
}

.size-btn {
    flex: 1;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.size-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.size-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.2);
}

.settings-zoom-controls {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 3px 6px;
    gap: 6px;
}

.zoom-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 28px;
    height: 28px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.zoom-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.zoom-level {
    font-size: 0.78rem;
    font-family: var(--font-mono);
    color: #fff;
    min-width: 44px;
    text-align: center;
    user-select: none;
}

.settings-btn-reset {
    margin-left: auto;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.74rem;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.15s;
}

.settings-btn-reset:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.settings-toggle-row-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.settings-toggle-row-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
}

.settings-toggle-row-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.25);
}

.settings-choice-group {
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
}

.settings-choice-btn {
    flex: 1;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all 0.15s ease;
}

.settings-choice-btn:hover {
    color: #fff;
}

.settings-choice-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.2);
}

/* LAYOUT PRINCIPAL */
.main-content {
    flex: 1;
    padding: 16px 24px 24px 24px;
    max-width: var(--main-max-width, 1550px);
    width: 100%;
    margin: 0 auto;
    transition: max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* CONTENEUR FLASHCARD 3D */
.flashcard-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 110px);
    padding: 4px 0 16px 0;
    overflow-x: hidden;
}

.flashcard-controls-top {
    width: 100%;
    max-width: var(--card-max-width, 1180px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    transition: max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-container {
    flex: 1;
    max-width: 380px;
    margin: 0 20px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.progress-track {
    height: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #64748b, #94a3b8);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-cyan { background: rgba(255, 255, 255, 0.06); color: #e2e8f0; border: 1px solid rgba(255, 255, 255, 0.12); }
.badge-green { background: rgba(16, 185, 129, 0.08); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.2); }
.badge-amber { background: rgba(245, 158, 11, 0.08); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.2); }
.badge-purple { background: rgba(168, 85, 247, 0.08); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.2); }

/* CARTE 3D & ANIMATIONS DE DÉFILEMENT */
.card-scene {
    width: 100%;
    max-width: var(--card-max-width, 1180px);
    height: var(--card-height, clamp(550px, 75vh, 830px));
    perspective: 1200px;
    margin-bottom: 18px;
    transition: max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1), height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center center;
    will-change: transform, opacity;
}

@keyframes cardSlideExitLeft {
    0% { transform: translateX(0) rotate(0deg) scale(1); opacity: 1; }
    100% { transform: translateX(-80px) rotate(-1deg) scale(0.97); opacity: 0; }
}

@keyframes cardSlideEnterRight {
    0% { transform: translateX(80px) rotate(1deg) scale(0.97); opacity: 0; }
    100% { transform: translateX(0) rotate(0deg) scale(1); opacity: 1; }
}

@keyframes cardSlideExitRight {
    0% { transform: translateX(0) rotate(0deg) scale(1); opacity: 1; }
    100% { transform: translateX(80px) rotate(1deg) scale(0.97); opacity: 0; }
}

@keyframes cardSlideEnterLeft {
    0% { transform: translateX(-80px) rotate(-1deg) scale(0.97); opacity: 0; }
    100% { transform: translateX(0) rotate(0deg) scale(1); opacity: 1; }
}

.card-scene.slide-exit-left {
    animation: cardSlideExitLeft 0.16s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    pointer-events: none;
}

.card-scene.slide-enter-right {
    animation: cardSlideEnterRight 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.card-scene.slide-exit-right {
    animation: cardSlideExitRight 0.16s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    pointer-events: none;
}

.card-scene.slide-enter-left {
    animation: cardSlideEnterLeft 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.card-inner.flipped {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 16px;
    padding: 24px 34px 18px 34px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 16px 40px -10px rgba(0, 0, 0, 0.65), 0 0 1px rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-front {
    background: linear-gradient(145deg, #181b23, #14161d);
}

.card-back {
    background: linear-gradient(145deg, #1a1e27, #151820);
    transform: rotateY(180deg);
    border-color: rgba(255, 255, 255, 0.14);
}

.card-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 12px;
    flex-shrink: 0;
}

.card-path {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.card-title {
    font-size: calc(1.5rem * var(--font-scale, 1));
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    line-height: 1.3;
    flex-shrink: 0;
}

.card-body-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 12px;
    margin-right: -4px;
    scrollbar-width: thin;
    scrollbar-color: #282c37 transparent;
}

.card-body-scroll::-webkit-scrollbar {
    width: 6px;
}

.card-body-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.card-body-scroll::-webkit-scrollbar-thumb {
    background: #282c37;
    border-radius: 4px;
}

.card-body-scroll::-webkit-scrollbar-thumb:hover {
    background: #3e4453;
}

/* RENDU KATEX & MARKDOWN DYNAMIQUE */
.latex-display {
    background: #111318;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: calc(16px * var(--font-scale, 1)) calc(22px * var(--font-scale, 1));
    margin: 8px 0;
    overflow-x: auto;
    color: #f1f5f9;
    font-size: calc(1.06rem * var(--font-scale, 1));
    line-height: 1.6;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.35);
}

.latex-display .md-p {
    margin: 0 0 8px 0;
    line-height: 1.6;
}

.latex-display .md-p:last-child {
    margin-bottom: 0;
}

.latex-display .md-bold {
    font-weight: 700;
    color: #ffffff;
}

.latex-display .wiki-link {
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px dashed rgba(226, 232, 240, 0.4);
    padding-bottom: 1px;
}

.latex-display .md-list {
    margin: 6px 0 10px 22px;
    padding: 0;
    list-style-type: disc;
}

.latex-display ol.md-list {
    list-style-type: decimal;
}

.latex-display .md-list li {
    margin-bottom: 5px;
    line-height: 1.55;
    color: var(--text-primary);
}

.latex-display .md-list li:last-child {
    margin-bottom: 0;
}

.latex-display .md-code {
    background: rgba(255, 255, 255, 0.06);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: #e2e8f0;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.latex-block-wrapper {
    margin: 10px 0;
    text-align: center;
}

.latex-block-wrapper .katex-display {
    margin: 6px 0 !important;
}

/* BLOC INTUITION & EXEMPLES */
.intuition-box {
    margin-top: 14px;
    padding: calc(14px * var(--font-scale, 1)) calc(18px * var(--font-scale, 1));
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    border-left: 3px solid #64748b;
    font-size: calc(0.95rem * var(--font-scale, 1));
}

.intuition-box .intuition-title {
    font-weight: 700;
    color: #cbd5e1;
    margin-bottom: 8px;
    font-size: calc(0.95rem * var(--font-scale, 1));
    display: flex;
    align-items: center;
    gap: 6px;
}

.intuition-box .md-p {
    margin: 0 0 8px 0;
    color: var(--text-secondary);
    line-height: 1.55;
}

.intuition-box .md-list {
    margin: 6px 0 8px 20px;
    padding: 0;
    list-style-type: disc;
}

.intuition-box .md-list li {
    margin-bottom: 5px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.intuition-box .md-bold {
    color: #f1f5f9;
    font-weight: 700;
}

.intuition-box .wiki-link {
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px dashed rgba(226, 232, 240, 0.4);
}

.card-hint-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* BOUTONS D'ACTION ANKI */
.review-actions {
    display: flex;
    gap: 12px;
    width: 100%;
    max-width: var(--card-max-width, 1180px);
    transition: max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.review-btn {
    flex: 1;
    padding: 13px 18px;
    border-radius: 10px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.94rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s ease;
}

.review-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.btn-again { background: rgba(239, 68, 68, 0.08); color: #f87171; border-color: rgba(239, 68, 68, 0.2); }
.btn-again:hover { background: rgba(239, 68, 68, 0.16); border-color: #f87171; }

.btn-hard { background: rgba(245, 158, 11, 0.08); color: #fbbf24; border-color: rgba(245, 158, 11, 0.2); }
.btn-hard:hover { background: rgba(245, 158, 11, 0.16); border-color: #fbbf24; }

.btn-good { background: rgba(255, 255, 255, 0.08); color: #f3f4f6; border-color: rgba(255, 255, 255, 0.18); }
.btn-good:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.3); color: #fff; }

.btn-easy { background: rgba(34, 197, 94, 0.08); color: #4ade80; border-color: rgba(34, 197, 94, 0.2); }
.btn-easy:hover { background: rgba(34, 197, 94, 0.16); border-color: #4ade80; }

/* EXPLORATEUR (MODE FICHES) */
.explorer-grid {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 24px;
    min-height: calc(100vh - 105px);
    transition: all 0.3s ease;
}

body[data-display-size="large"] .explorer-grid {
    grid-template-columns: 380px 1fr;
    gap: 28px;
}

body[data-display-size="full"] .explorer-grid {
    grid-template-columns: 420px 1fr;
    gap: 32px;
}

.sidebar-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 16px;
    overflow-y: auto;
    max-height: calc(100vh - 105px);
}

.content-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 32px 40px;
    overflow-y: auto;
    max-height: calc(100vh - 105px);
}

/* ARBORESCENCE & MENUS DÉPLIANTS */
.sidebar-header {
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.sidebar-actions {
    display: flex;
    gap: 6px;
    align-items: center;
}

.tree-level {
    margin-bottom: 8px;
}

/* 1. NIVEAU (DOSSIER RACINE) */
.tree-level-header {
    font-size: 0.92rem;
    font-weight: 700;
    color: #f1f5f9;
    padding: 8px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.15s ease;
    user-select: none;
}

.tree-level-header:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: #3b404f;
}

.tree-header-left {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
}

.tree-chevron {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    width: 14px;
    text-align: center;
    display: inline-block;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.tree-level.open > .tree-level-header .tree-chevron {
    color: #f1f5f9;
}

.tree-level-body {
    display: none;
    padding-left: 8px;
    margin: 4px 0 6px 6px;
    border-left: 2px solid var(--border-color);
}

.tree-level.open > .tree-level-body {
    display: block;
}

/* 2. CHAPITRE (SOUS-DOSSIER) */
.tree-chapter {
    margin: 4px 0;
}

.tree-chapter-header {
    padding: 6px 10px;
    font-size: 0.86rem;
    color: var(--text-primary);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.15s ease;
    user-select: none;
}

.tree-chapter-header:hover {
    background: var(--bg-card);
    color: #fff;
}

.tree-chapter.active > .tree-chapter-header {
    background: var(--bg-card-hover);
    color: #fff;
    font-weight: 600;
}

.tree-chapter-body {
    display: none;
    padding-left: 10px;
    margin: 2px 0 6px 8px;
    border-left: 1.5px dashed var(--border-color);
}

.tree-chapter.open > .tree-chapter-body {
    display: block;
}

.tree-chapter-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tree-quiz-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: #cbd5e1;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.tree-quiz-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.25);
}

/* 3. NOTION (FICHE DE COURS INDIVIDUELLE) */
.tree-notion-item {
    padding: 6px 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    margin: 2px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.15s ease;
}

.tree-notion-item:hover {
    background: rgba(255, 255, 255, 0.04);
    color: #fff;
}

.tree-notion-item.active {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    font-weight: 600;
    border-left: 3px solid #e2e8f0;
}

.notion-bullet {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
    flex-shrink: 0;
}

.tree-notion-item.active .notion-bullet {
    background: #e2e8f0;
}

.notion-id-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.notion-title-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

/* BOUTONS ET CONTRÔLES DE NAVIGATION FLASHCARD */
.back-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 7px 14px;
    border-radius: 8px;
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.order-toggle-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.order-toggle-btn:hover {
    border-color: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.order-toggle-btn.ordered {
    color: #f1f5f9;
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.08);
}

.quiz-order-control {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    user-select: none;
    cursor: pointer;
}

.quiz-order-control input[type="checkbox"] {
    accent-color: #94a3b8;
    cursor: pointer;
}

/* MODALE DE RECHERCHE */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-dialog {
    background: #161820;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 100%;
    max-width: 680px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.7);
    overflow: hidden;
}

.modal-search-input {
    width: 100%;
    padding: 18px 24px;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: #fff;
    font-size: 1.15rem;
    outline: none;
}

.modal-results-list {
    max-height: 420px;
    overflow-y: auto;
    padding: 8px;
}

.search-result-item {
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: background 0.15s;
}

.search-result-item:hover, .search-result-item.selected {
    background: var(--bg-card);
}

.search-result-title {
    font-weight: 600;
    color: #fff;
    font-size: 0.95rem;
}

.search-result-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* LIENS WIKI CLIQUABLES */
.wiki-link {
    color: #e2e8f0 !important;
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px dashed rgba(226, 232, 240, 0.35);
    padding: 1px 3px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline;
}

.wiki-link:hover {
    color: #ffffff !important;
    border-bottom: 1px solid #ffffff;
    background: rgba(255, 255, 255, 0.08);
}

/* MODALE DE PREVISUALISATION RAPIDE */
.link-preview-dialog {
    width: 90%;
    max-width: 760px;
    background: #161820;
    border: 1px solid var(--border-color);
    border-radius: 18px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
    padding: 24px 28px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.link-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.6rem;
    cursor: pointer;
    padding: 0 6px;
    line-height: 1;
    transition: color 0.15s;
    border-radius: 6px;
}

.modal-close-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.link-preview-body {
    flex: 1;
    overflow-y: auto;
    padding-right: 8px;
}

/* RESPONSIVE */
@media (max-width: 1050px) {
    .navbar {
        padding: 0 16px;
    }
    .search-trigger {
        width: clamp(260px, 28vw, 360px);
    }
}

@media (max-width: 900px) {
    .navbar {
        height: auto;
        padding: 10px 14px;
        flex-wrap: wrap;
        gap: 10px;
    }
    .settings-wrapper {
        order: 2;
    }
    .nav-tabs {
        order: 3;
        width: 100%;
        justify-content: center;
    }
    .search-trigger {
        order: 4;
        width: 100%;
    }
    .card-face {
        padding: 18px 20px 14px 20px;
    }
    .explorer-grid, 
    body[data-display-size="large"] .explorer-grid, 
    body[data-display-size="full"] .explorer-grid {
        grid-template-columns: 1fr;
    }
    .sidebar-panel {
        max-height: 280px;
    }
}

@media (max-width: 600px) {
    .settings-menu {
        position: fixed;
        top: 64px;
        left: 12px;
        right: 12px;
        width: auto;
    }
}

/* ZONE AUTHENTIFICATION, COMPTE & NEXUS PRO */
.auth-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 12px;
}

.auth-nav-btn {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.auth-nav-btn.login {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.auth-nav-btn.login:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.auth-nav-btn.register {
    background: rgba(255, 255, 255, 0.08);
    color: #f1f5f9;
    border-color: rgba(255, 255, 255, 0.18);
}

.auth-nav-btn.register:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.3);
    color: #fff;
}

.auth-nav-btn.pro {
    background: rgba(245, 158, 11, 0.1);
    color: #fbbf24;
    border-color: rgba(245, 158, 11, 0.3);
}

.auth-nav-btn.pro:hover {
    background: rgba(245, 158, 11, 0.18);
    border-color: rgba(245, 158, 11, 0.45);
    color: #fff;
}

.user-profile-menu {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-pseudo-badge {
    font-size: 0.82rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.badge-pro-tag {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
    font-weight: 700;
    font-size: 0.7rem;
    padding: 2px 7px;
    border-radius: 6px;
    letter-spacing: 0.5px;
}

.logout-link {
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    text-decoration: underline;
    transition: color 0.15s;
}

.logout-link:hover {
    color: #ef4444;
}

/* Modale Mon Compte */
.account-dialog {
    max-width: 440px;
    padding: 24px 28px;
}

.account-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.account-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.account-sub-card {
    background: rgba(14, 16, 21, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
}

/* Modale d'authentification */
.auth-dialog {
    max-width: 420px;
    padding: 24px 28px;
}

.auth-header-tabs {
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 14px;
    margin-bottom: 20px;
}

.auth-tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 6px;
    position: relative;
    transition: color 0.2s;
}

.auth-tab-btn.active {
    color: #fff;
}

.auth-tab-btn.active::after {
    content: "";
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #f3f4f6;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.form-group label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    background: rgba(14, 16, 21, 0.8);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: #64748b;
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.password-input-wrapper input {
    width: 100%;
    padding-right: 42px;
}

.toggle-password-btn {
    position: absolute;
    right: 8px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}

.toggle-password-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.auth-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #f87171;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.84rem;
    margin-bottom: 16px;
}

.auth-submit-btn {
    width: 100%;
    padding: 12px;
    background: #f3f4f6;
    color: #0e1015;
    font-weight: 700;
    font-size: 0.95rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.auth-submit-btn:hover {
    background: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}

.auth-pro-banner {
    margin-top: 18px;
    padding: 12px 14px;
    background: rgba(245, 158, 11, 0.06);
    border: 1px dashed rgba(245, 158, 11, 0.25);
    border-radius: 8px;
    font-size: 0.8rem;
    color: #fcd34d;
    text-align: center;
    cursor: pointer;
    transition: background 0.2s;
}

.auth-pro-banner:hover {
    background: rgba(245, 158, 11, 0.12);
}

/* Modale Upgrade Nexus Pro */
.upgrade-dialog {
    max-width: 480px;
    padding: 32px 36px;
    text-align: center;
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
}

.upgrade-close-btn {
    position: absolute;
    top: 16px;
    right: 18px;
}

.upgrade-header {
    margin-bottom: 24px;
}

.upgrade-perks {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
    background: rgba(14, 16, 21, 0.6);
    border: 1px solid var(--border-color);
    padding: 18px 20px;
    border-radius: 12px;
}

.perk-row {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.perk-check {
    color: var(--accent-green);
    font-weight: bold;
    font-size: 1.1rem;
}

.upgrade-price-box {
    margin-bottom: 20px;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 6px;
}

.price-value {
    font-size: 2.4rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.5px;
}

.price-cycle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.upgrade-cta-btn {
    width: 100%;
    padding: 14px;
    background: #f59e0b;
    color: #0e1015;
    font-size: 1.02rem;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
    transition: all 0.2s;
}

.upgrade-cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
}

.upgrade-guarantee {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 12px;
}

/* Bandeau Freemium sur les cartes verrouillées */
.intuition-locked-box {
    margin-top: 16px;
    padding: 18px 22px;
    background: rgba(245, 158, 11, 0.04);
    border: 1px dashed rgba(245, 158, 11, 0.25);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.locked-box-text h4 {
    color: #fcd34d;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.locked-box-text p {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.4;
}

.locked-unlock-btn {
    padding: 8px 16px;
    background: #f59e0b;
    color: #0e1015;
    font-size: 0.82rem;
    font-weight: 700;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.locked-unlock-btn:hover {
    opacity: 0.9;
}

/* TD & CALLOUTS OBSIDIAN */
.td-sheet-container {
    margin-top: 10px;
    max-width: 100%;
}

.td-tree-badge {
    background: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.68rem;
    font-weight: 700;
    padding: 1px 5px;
    margin-right: 6px;
    letter-spacing: 0.5px;
}

.tree-td-item {
    border-left: 2px solid rgba(168, 85, 247, 0.35) !important;
    background: rgba(168, 85, 247, 0.02);
}

.tree-td-item:hover {
    background: rgba(168, 85, 247, 0.06);
}

/* Callouts Obsidian */
.callout-box {
    margin: 22px 0;
    border-radius: 12px;
    background: rgba(22, 25, 33, 0.85);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: border-color 0.2s ease;
}

.callout-box:hover {
    border-color: #383d4c;
}

.callout-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    font-weight: 700;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    user-select: none;
}

.callout-badge {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 5px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.callout-title {
    flex: 1;
    color: #f8fafc;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
}

.callout-body {
    padding: 18px 22px;
    font-size: calc(0.98rem * var(--font-scale, 1));
    line-height: 1.65;
    color: #cbd5e1;
}

.callout-body .md-p {
    margin: 0 0 12px 0;
    color: #cbd5e1;
    line-height: 1.65;
}

.callout-body .md-p:last-child {
    margin-bottom: 0;
}

/* 1. ÉNONCÉ D'EXERCICE (callout-question) */
.callout-box.callout-question {
    border-left: 3px solid #64748b;
    background: rgba(255, 255, 255, 0.015);
    border-color: var(--border-color);
}

.callout-box.callout-question .callout-header {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
}

.callout-box.callout-question .callout-badge {
    background: rgba(255, 255, 255, 0.08);
    color: #f1f5f9;
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.callout-box.callout-question .callout-title {
    color: #f8fafc;
}

/* 2. CORRECTION DÉTAILLÉE (callout-success) */
.callout-box.callout-success {
    border-left: 3px solid #059669;
    background: rgba(5, 150, 105, 0.02);
    border-color: rgba(5, 150, 105, 0.2);
}

.callout-box.callout-success .callout-header {
    background: rgba(5, 150, 105, 0.05);
    border-bottom: 1px solid rgba(5, 150, 105, 0.15);
    cursor: pointer;
    transition: background 0.2s ease;
}

.callout-box.callout-success .callout-header:hover {
    background: rgba(5, 150, 105, 0.08);
}

.callout-box.callout-success .callout-badge {
    background: rgba(5, 150, 105, 0.14);
    color: #34d399;
    border: 1px solid rgba(5, 150, 105, 0.25);
}

.callout-box.callout-success .callout-title {
    color: #d1fae5;
}

details.callout-box > summary {
    list-style: none;
}
details.callout-box > summary::-webkit-details-marker {
    display: none;
}
details.callout-box .callout-chevron {
    font-size: 0.95rem;
    color: #34d399;
    transition: transform 0.2s ease;
    margin-left: auto;
}
details.callout-box[open] .callout-chevron {
    transform: rotate(180deg);
}

/* 3. EXEMPLE (callout-example) */
.callout-box.callout-example {
    border-left: 3px solid #d97706;
    background: rgba(217, 119, 6, 0.02);
    border-color: rgba(217, 119, 6, 0.2);
}

.callout-box.callout-example .callout-header {
    background: rgba(217, 119, 6, 0.05);
    border-bottom: 1px solid rgba(217, 119, 6, 0.15);
}

.callout-box.callout-example .callout-badge {
    background: rgba(217, 119, 6, 0.12);
    color: #fbbf24;
    border: 1px solid rgba(217, 119, 6, 0.25);
}

.callout-box.callout-example .callout-title {
    color: #fef3c7;
}

/* 4. NOTE / INFO (callout-note) */
.callout-box.callout-note, .callout-box.callout-info {
    border-left: 3px solid #64748b;
    background: rgba(255, 255, 255, 0.015);
    border-color: var(--border-color);
}

.callout-box.callout-note .callout-header, .callout-box.callout-info .callout-header {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
}

.callout-box.callout-note .callout-badge, .callout-box.callout-info .callout-badge {
    background: rgba(255, 255, 255, 0.07);
    color: #cbd5e1;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.callout-box.callout-note .callout-title, .callout-box.callout-info .callout-title {
    color: #f1f5f9;
}

/* 5. DÉFINITION (callout-definition) */
.callout-box.callout-definition {
    border-left: 3px solid #475569;
    background: rgba(255, 255, 255, 0.015);
    border-color: var(--border-color);
}

.callout-box.callout-definition .callout-header {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
}

.callout-box.callout-definition .callout-badge {
    background: rgba(255, 255, 255, 0.07);
    color: #cbd5e1;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.callout-box.callout-definition .callout-title {
    color: #f1f5f9;
}

/* 6. ATTENTION / WARNING (callout-warning) */
.callout-box.callout-warning, .callout-box.callout-caution {
    border-left: 3px solid #dc2626;
    background: rgba(220, 38, 38, 0.02);
    border-color: rgba(220, 38, 38, 0.2);
}

.callout-box.callout-warning .callout-header, .callout-box.callout-caution .callout-header {
    background: rgba(220, 38, 38, 0.06);
    border-bottom: 1px solid rgba(220, 38, 38, 0.15);
}

.callout-box.callout-warning .callout-badge, .callout-box.callout-caution .callout-badge {
    background: rgba(220, 38, 38, 0.15);
    color: #f87171;
    border: 1px solid rgba(220, 38, 38, 0.3);
}

.callout-box.callout-warning .callout-title, .callout-box.callout-caution .callout-title {
    color: #fca5a5;
}

/* Headings in markdown content */
.md-h1 {
    font-size: 1.6rem;
    font-weight: 800;
    color: #ffffff;
    margin: 32px 0 16px 0;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.md-h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #f1f5f9;
    margin: 28px 0 16px 0;
    padding-left: 10px;
    border-left: 3px solid #64748b;
}

.md-h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #e2e8f0;
    margin: 20px 0 12px 0;
}

.md-hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 30px 0;
}

.md-quote {
    border-left: 3px solid #64748b;
    padding: 10px 18px;
    margin: 14px 0;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
}

.md-quote .md-p {
    margin: 0;
    color: var(--text-secondary);
}

/* BLOCS DE CODE (R, Python, etc.) */
.code-block-wrapper {
    margin: 16px 0;
    border-radius: 10px;
    background: #111317;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 7px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
}

.code-lang {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.code-copy-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border-radius: 6px;
    padding: 3px 10px;
    font-size: 0.76rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.code-copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    transform: translateY(-1px);
}

.code-pre {
    margin: 0;
    padding: 16px 20px;
    overflow-x: auto;
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    font-size: calc(0.9rem * var(--font-scale, 1));
    line-height: 1.55;
    color: #e2e8f0;
}

.locked-td-link {
    display: inline-block;
    color: #f59e0b;
    font-weight: 700;
    text-decoration: underline;
    margin-top: 6px;
    cursor: pointer;
}