/* ═══════════════════════════════════════════════════════════
   LATEBUTGREAT — Creative Studio Design System v3.0
   Design Language: Aurora Dark · Expressive · Alive
═══════════════════════════════════════════════════════════ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
    /* Backgrounds */
    --bg-void: #06070d;
    --bg-deep: #0b0d18;
    --bg-surface: #10131f;
    --bg-elevated: #181c2e;
    --bg-border: rgba(255, 255, 255, 0.06);
    --bg-border-hi: rgba(255, 255, 255, 0.12);

    /* Accent Palette */
    --indigo: #6d5dfc;
    --indigo-hi: #8b7cfd;
    --indigo-glow: rgba(109, 93, 252, 0.35);
    --teal: #0dd9c3;
    --teal-dim: rgba(13, 217, 195, 0.15);
    --amber: #f59e0b;
    --amber-glow: rgba(245, 158, 11, 0.3);

    /* Text */
    --text: #e8ebff;
    --text-dim: #5c6899;
    --text-muted: #353d5e;

    /* Slide Defaults (overridden by vibe) */
    --slide-bg: #ffffff;
    --slide-text: #0f172a;
    --slide-accent: #6d5dfc;
    --slide-accent-rgb: 109, 93, 252;

    /* Typography */
    --font-display: 'Instrument Serif', Georgia, serif;
    --font-ui: 'DM Sans', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing scale */
    --s1: 4px;
    --s2: 8px;
    --s3: 12px;
    --s4: 16px;
    --s5: 24px;
    --s6: 32px;
    --s7: 48px;
    --s8: 64px;

    /* Motion */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --dur-fast: 120ms;
    --dur-med: 280ms;
    --dur-slow: 500ms;
}

/* ── Vibe Mood System ─────────────────────────────────────── */
/* Each vibe bleeds an ambient color into the page corners */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    transition: background 1.5s ease;
    background: radial-gradient(ellipse 60% 40% at 10% 20%, rgba(109, 93, 252, 0.07) 0%, transparent 70%),
        radial-gradient(ellipse 50% 30% at 90% 80%, rgba(13, 217, 195, 0.05) 0%, transparent 70%);
}

[data-vibe="cyberpunk"]::before {
    background: radial-gradient(ellipse 60% 40% at 5% 15%, rgba(255, 0, 255, 0.09) 0%, transparent 65%),
        radial-gradient(ellipse 40% 30% at 95% 85%, rgba(0, 255, 255, 0.07) 0%, transparent 65%);
}

[data-vibe="classic"]::before {
    background: radial-gradient(ellipse 60% 40% at 10% 20%, rgba(212, 175, 55, 0.07) 0%, transparent 65%),
        radial-gradient(ellipse 40% 30% at 85% 80%, rgba(139, 90, 43, 0.05) 0%, transparent 65%);
}

[data-vibe="botanic"]::before {
    background: radial-gradient(ellipse 60% 40% at 5% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 65%),
        radial-gradient(ellipse 40% 30% at 90% 75%, rgba(6, 78, 59, 0.1) 0%, transparent 65%);
}

[data-vibe="minimalist"]::before {
    background: radial-gradient(ellipse 60% 40% at 10% 20%, rgba(160, 160, 180, 0.04) 0%, transparent 65%);
}

/* Slide-specific vibe themes */
[data-vibe="cyberpunk"] {
    --slide-bg: #0a050f;
    --slide-text: #00ffff;
    --slide-accent: #ff00ff;
    --slide-accent-rgb: 255, 0, 255;
}

[data-vibe="classic"] {
    --slide-bg: #fdf6e3;
    --slide-text: #2c2415;
    --slide-accent: #d4af37;
    --slide-accent-rgb: 212, 175, 55;
}

[data-vibe="minimalist"] {
    --slide-bg: #fafafa;
    --slide-text: #111111;
    --slide-accent: #555555;
    --slide-accent-rgb: 85, 85, 85;
}

[data-vibe="botanic"] {
    --slide-bg: #f0fdf4;
    --slide-text: #064e3b;
    --slide-accent: #10b981;
    --slide-accent-rgb: 16, 185, 129;
}

/* ── Reset ────────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-ui);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg-deep);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    position: relative;
    padding-bottom: env(safe-area-inset-bottom);
}

/* ── Keyframes ────────────────────────────────────────────── */
@keyframes aurora-drift {
    0% {
        transform: translate(0%, 0%) scale(1);
    }

    33% {
        transform: translate(2%, -1%) scale(1.03);
    }

    66% {
        transform: translate(-1%, 2%) scale(0.98);
    }

    100% {
        transform: translate(0%, 0%) scale(1);
    }
}

@keyframes breathe {

    0%,
    100% {
        opacity: 0.6;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.008);
    }
}

@keyframes shimmer-slide {
    0% {
        background-position: -200% center;
    }

    100% {
        background-position: 200% center;
    }
}

@keyframes thinking-wave {
    0% {
        transform: scaleY(0.4) scaleX(1);
    }

    25% {
        transform: scaleY(1.4) scaleX(1.05);
    }

    50% {
        transform: scaleY(0.6) scaleX(0.95);
    }

    75% {
        transform: scaleY(1.2) scaleX(1.02);
    }

    100% {
        transform: scaleY(0.4) scaleX(1);
    }
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes plan-appear {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes glow-pulse {

    0%,
    100% {
        box-shadow: 0 0 20px var(--indigo-glow), 0 0 60px transparent;
    }

    50% {
        box-shadow: 0 0 30px var(--indigo-glow), 0 0 80px rgba(109, 93, 252, 0.1);
    }
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-10px) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(80px) rotate(360deg);
        opacity: 0;
    }
}

@keyframes celebration-bloom {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    60% {
        transform: scale(1.05);
        opacity: 1;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ── Ambient Aurora Background ────────────────────────────── */
.aurora-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.aurora-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: aurora-drift 20s ease-in-out infinite;
}

.aurora-orb-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    left: -100px;
    background: radial-gradient(circle, rgba(109, 93, 252, 0.12) 0%, transparent 70%);
    animation-duration: 25s;
}

.aurora-orb-2 {
    width: 400px;
    height: 400px;
    top: 40%;
    right: -100px;
    background: radial-gradient(circle, rgba(13, 217, 195, 0.08) 0%, transparent 70%);
    animation-duration: 18s;
    animation-delay: -7s;
}

.aurora-orb-3 {
    width: 500px;
    height: 300px;
    bottom: -100px;
    left: 40%;
    background: radial-gradient(circle, rgba(109, 93, 252, 0.06) 0%, transparent 70%);
    animation-duration: 22s;
    animation-delay: -12s;
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-border-hi);
    border-radius: 3px;
}

/* ── Layout ───────────────────────────────────────────────── */
.page-wrap {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--s5);
}

/* ── NAV ──────────────────────────────────────────────────── */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--s5) 0;
    margin-bottom: var(--s6);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--text);
    letter-spacing: -0.01em;
}

.nav-logo span {
    background: linear-gradient(135deg, var(--indigo-hi) 0%, var(--teal) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-badge {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    background: var(--bg-elevated);
    border: 1px solid var(--bg-border);
    padding: 3px 10px;
    border-radius: 20px;
}

/* ── BRANDING TOGGLE ─────────────────────────────────────── */
.branding-toggle-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--s2);
    margin-top: var(--s3);
    animation: fade-up 0.4s var(--ease-out) 0.2s both;
}

.branding-chip {
    font-family: var(--font-ui);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    background: var(--bg-elevated);
    border: 1px solid var(--bg-border);
    padding: 5px 14px;
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--dur-med) var(--ease-out);
    display: inline-flex;
    align-items: center;
    gap: var(--s2);
}

.branding-chip:hover {
    border-color: var(--bg-border-hi);
    color: var(--text);
}

.branding-chip.active {
    background: rgba(109, 93, 252, 0.15);
    border-color: rgba(109, 93, 252, 0.4);
    color: var(--indigo-hi);
}

.branding-chip-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: background var(--dur-med) ease;
    flex-shrink: 0;
}

.branding-chip.active .branding-chip-dot {
    background: var(--indigo-hi);
    box-shadow: 0 0 6px var(--indigo-glow);
}

.branding-chip-hint {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-align: center;
}

/* ── SLIDE COUNT PICKER ─────────────────────────────────── */
.slide-count-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--s3);
    margin-top: var(--s2);
    animation: fade-up 0.4s var(--ease-out) 0.25s both;
}

.slide-count-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.slide-count-chips {
    display: flex;
    gap: 6px;
}

.count-chip {
    font-family: var(--font-ui);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-dim);
    background: var(--bg-elevated);
    border: 1px solid var(--bg-border);
    width: 32px;
    height: 32px;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--dur-med) var(--ease-out);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.slide-layout-split .split-item-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: rgba(var(--slide-accent-rgb), 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--slide-accent);
    flex-shrink: 0;
}

.count-chip:hover {
    border-color: var(--bg-border-hi);
    color: var(--text);
}

.count-chip.active {
    background: rgba(109, 93, 252, 0.15);
    border-color: rgba(109, 93, 252, 0.4);
    color: var(--indigo-hi);
}

/* ── CHART SLIDE LAYOUT ─────────────────────────────────── */
.chart-layout {
    display: flex !important;
    flex-direction: column !important;
    padding: 60px 80px !important;
    gap: 30px !important;
    background: var(--slide-bg) !important;
}

.chart-header {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
}

.chart-header h2 {
    font-size: 2.4rem !important;
    font-weight: 700 !important;
    color: var(--slide-text) !important;
    flex: 1;
}

.chart-badge {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--slide-accent);
    background: rgba(var(--slide-accent-rgb), 0.12);
    border: 1px solid rgba(var(--slide-accent-rgb), 0.3);
    padding: 4px 12px;
    border-radius: 20px;
    flex-shrink: 0;
}

.chart-canvas-wrap {
    flex: 1;
    position: relative;
    min-height: 0;
}

.chart-canvas-wrap canvas {
    width: 100% !important;
    height: 100% !important;
}

.chart-table-wrap {
    flex: 1;
    overflow: auto;
}

.chart-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1.1rem;
    color: var(--slide-text);
}

.chart-table thead tr {
    background: var(--slide-accent);
    color: white;
}

.chart-table th {
    padding: 14px 20px;
    text-align: left;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.03em;
}

.chart-table tbody tr:nth-child(even) {
    background: rgba(var(--slide-accent-rgb), 0.06);
}

.chart-table td {
    padding: 12px 20px;
    border-bottom: 1px solid rgba(var(--slide-accent-rgb), 0.15);
}



/* ── HERO SECTION ─────────────────────────────────────────── */
.hero {
    text-align: center;
    padding: var(--s7) 0 var(--s6);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--s2);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--indigo-hi);
    background: rgba(109, 93, 252, 0.1);
    border: 1px solid rgba(109, 93, 252, 0.25);
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: var(--s5);
    animation: fade-up 0.6s var(--ease-out) both;
}

.hero-eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--indigo-hi);
    border-radius: 50%;
    animation: breathe 2s ease-in-out infinite;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 6vw, 5rem);
    font-weight: 400;
    line-height: 1.08;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: var(--s5);
    animation: fade-up 0.6s var(--ease-out) 0.1s both;
}

.hero h1 em {
    font-style: italic;
    display: inline-block;
    padding-left: 0.1em;
    margin-left: -0.1em;
    background: linear-gradient(135deg, var(--indigo-hi) 0%, var(--teal) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 1.05rem;
    color: var(--text-dim);
    max-width: 520px;
    margin: 0 auto var(--s7);
    line-height: 1.65;
    animation: fade-up 0.6s var(--ease-out) 0.2s both;
}

/* ── THE HERO PROMPT INPUT ────────────────────────────────── */
.prompt-stage {
    position: relative;
    animation: fade-up 0.6s var(--ease-out) 0.3s both;
}

.prompt-glow-ring {
    position: absolute;
    inset: -1px;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--indigo), var(--teal));
    opacity: 0;
    transition: opacity var(--dur-slow) ease;
    filter: blur(8px);
    z-index: -1;
}

.prompt-stage:focus-within .prompt-glow-ring {
    opacity: 0.6;
    animation: glow-pulse 3s ease-in-out infinite;
}

.prompt-wrap {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-surface);
    border: 1px solid var(--bg-border-hi);
    border-radius: 20px;
    padding: var(--s3) var(--s4);
    gap: var(--s4);
    transition: border-color var(--dur-med) ease, box-shadow var(--dur-med) ease;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

@media (max-width: 600px) {
    .prompt-wrap {
        flex-direction: column;
        align-items: stretch;
        padding: var(--s5);
    }

    .prompt-opts {
        width: 100%;
    }

    .plan-btn {
        width: 100%;
        justify-content: center;
    }
}

.prompt-stage:focus-within .prompt-wrap {
    border-color: rgba(109, 93, 252, 0.5);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(109, 93, 252, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.prompt-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    opacity: 0.7;
    transition: opacity var(--dur-med) ease;
}

.prompt-stage:focus-within .prompt-icon {
    opacity: 1;
}

#topicInput {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-ui);
    font-size: 1.05rem;
    color: var(--text);
    caret-color: var(--indigo-hi);
}

#topicInput::placeholder {
    color: var(--text-muted);
}

/* ── THINKING WAVEFORM (loading state) ───────────────────── */
.thinking-wave {
    display: none;
    align-items: center;
    gap: 3px;
    height: 20px;
    padding: 0 var(--s3);
}

.thinking-wave.active {
    display: flex;
}

.wave-bar {
    width: 3px;
    height: 100%;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--indigo-hi), var(--teal));
    animation: thinking-wave 1s ease-in-out infinite;
}

.wave-bar:nth-child(1) {
    animation-delay: 0s;
}

.wave-bar:nth-child(2) {
    animation-delay: 0.1s;
}

.wave-bar:nth-child(3) {
    animation-delay: 0.2s;
}

.wave-bar:nth-child(4) {
    animation-delay: 0.15s;
}

.wave-bar:nth-child(5) {
    animation-delay: 0.05s;
}

/* ── DELIVERABLE CHIPS ────────────────────────────────────── */
.deliverable-row {
    display: flex;
    align-items: center;
    gap: var(--s2);
    margin-top: var(--s4);
    flex-wrap: wrap;
    justify-content: center;
}

.deliverable-label {
    font-size: 0.78rem;
    color: var(--text-dim);
    font-weight: 500;
}

.del-chip {
    font-family: var(--font-ui);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    background: var(--bg-elevated);
    border: 1px solid var(--bg-border);
    padding: 5px 14px;
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--dur-med) var(--ease-out);
}

.del-chip:hover {
    border-color: var(--bg-border-hi);
    color: var(--text);
}

.del-chip.active {
    background: rgba(109, 93, 252, 0.15);
    border-color: rgba(109, 93, 252, 0.4);
    color: var(--indigo-hi);
}

/* Orientation selector in prompt row */
.prompt-opts {
    display: flex;
    align-items: center;
    gap: var(--s3);
    flex-shrink: 0;
}

select {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--text-dim);
    background: var(--bg-elevated);
    border: 1px solid var(--bg-border);
    border-radius: 10px;
    padding: 6px 10px;
    cursor: pointer;
    appearance: none;
    outline: none;
    transition: border-color var(--dur-med) ease;
}

select:focus {
    border-color: var(--indigo-hi);
    color: var(--text);
}

/* ── PLAN BUTTON ──────────────────────────────────────────── */
.plan-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--s2);
    background: var(--indigo);
    color: white;
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    padding: 12px 24px;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: background var(--dur-med) ease, transform var(--dur-fast) ease, box-shadow var(--dur-med) ease;
    box-shadow: 0 4px 20px rgba(109, 93, 252, 0.35);
    flex-shrink: 0;
}

.plan-btn:hover {
    background: var(--indigo-hi);
    transform: translateY(-1px);
    box-shadow: 0 6px 28px rgba(109, 93, 252, 0.5);
}

.plan-btn:active {
    transform: translateY(0) scale(0.97);
    box-shadow: 0 2px 10px rgba(109, 93, 252, 0.3);
}

.plan-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ── PLAN CARD ────────────────────────────────────────────── */
/* ── MOBILE ADAPTATIONS ────────────────────────────────────── */
@media (max-width: 600px) {
    .config-panel {
        padding: var(--s4) !important;
        margin: 10px !important;
        max-width: calc(100vw - 20px) !important;
    }

    .form-row {
        flex-direction: column !important;
        gap: 10px !important;
    }

    .config-row {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 5px !important;
    }

    .slide-count-chips {
        flex-wrap: wrap !important;
    }

    .plan-card {
        padding: var(--s4) !important;
        margin: 10px !important;
    }

    .subtopic-item {
        padding: 10px !important;
        font-size: 0.85rem !important;
    }
}

.plan-card {
    margin-top: var(--s5);
    background: var(--bg-surface);
    border: 1px solid var(--bg-border-hi);
    border-radius: 20px;
    padding: var(--s6);
    animation: plan-appear 0.4s var(--ease-spring) both;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.plan-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--s5);
}

.plan-card-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--text);
    font-style: italic;
}

.plan-card-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: var(--s3);
}

.plan-vibe-strip {
    display: flex;
    gap: var(--s2);
    margin-bottom: var(--s5);
}

.vibe-swatch {
    display: flex;
    align-items: center;
    gap: var(--s2);
    padding: 6px 14px;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    background: var(--bg-elevated);
    transition: all var(--dur-med) ease;
    flex-shrink: 0;
}

.vibe-swatch::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.vibe-swatch[data-v="modern"]::before {
    background: var(--indigo);
}

.vibe-swatch[data-v="cyberpunk"]::before {
    background: #ff00ff;
}

.vibe-swatch[data-v="classic"]::before {
    background: #d4af37;
}

.vibe-swatch[data-v="botanic"]::before {
    background: #10b981;
}

.vibe-swatch[data-v="minimalist"]::before {
    background: #888;
}

.vibe-swatch.active {
    border-color: var(--bg-border-hi);
    color: var(--text);
    background: var(--bg-elevated);
}

/* ── SOURCE STRIP ────────────────────────────────────────── */
.plan-source-strip {
    display: flex;
    gap: var(--s3);
    margin-bottom: var(--s5);
}

.source-swatch {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--s3) var(--s4);
    border-radius: 12px;
    border: 1px solid var(--bg-border);
    background: var(--bg-elevated);
    cursor: pointer;
    transition: all var(--dur-med) ease;
}

.source-swatch strong {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-dim);
    margin-bottom: 2px;
    transition: color var(--dur-med) ease;
}

.source-swatch span {
    font-size: 0.7rem;
    color: var(--text-dim-extra);
}

.source-swatch.active {
    border-color: var(--indigo-glow);
    background: rgba(109, 93, 252, 0.05);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.source-swatch.active strong {
    color: var(--indigo-glow);
}

.source-swatch:hover:not(.active) {
    border-color: var(--bg-border-hi);
    transform: translateY(-1px);
}

.topics-list {
    display: flex;
    flex-direction: column;
    gap: var(--s2);
    margin-bottom: var(--s5);
}

.topic-row {
    display: flex;
    align-items: center;
    gap: var(--s3);
    background: var(--bg-elevated);
    border: 1px solid var(--bg-border);
    border-radius: 12px;
    padding: 10px 14px;
    transition: border-color var(--dur-med) ease;
}

.topic-row:focus-within {
    border-color: rgba(109, 93, 252, 0.35);
}

.topic-drag-handle {
    color: var(--text-muted);
    cursor: grab;
    font-size: 0.9rem;
    line-height: 1;
    user-select: none;
}

.topic-row input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-ui);
    font-size: 0.9rem;
    color: var(--text);
    caret-color: var(--indigo-hi);
}

.topic-row input::placeholder {
    color: var(--text-muted);
}

.remove-topic {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    padding: 2px;
    border-radius: 4px;
    transition: color var(--dur-fast) ease;
}

.remove-topic:hover {
    color: #ff5555;
}

.finalize-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--s2);
    background: linear-gradient(135deg, var(--indigo) 0%, #4f46e5 100%);
    color: white;
    font-family: var(--font-ui);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    padding: 14px;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: all var(--dur-med) ease;
    box-shadow: 0 4px 20px rgba(109, 93, 252, 0.4);
}

.finalize-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 30px rgba(109, 93, 252, 0.55);
}

.finalize-btn:active {
    transform: scale(0.98);
}

.finalize-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ── CONFIGURATION PANELS ────────────────────────────────── */
.config-wrapper {
    margin-top: var(--s4);
    width: 100%;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    animation: fade-up 0.6s var(--ease-out) both;
}

.config-panel {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    padding: var(--s5);
    backdrop-filter: blur(20px);
    transition: all 0.4s var(--ease-out);
    box-sizing: border-box;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.config-panel.hidden {
    display: none;
}

#deckOptions,
#paperOptions {
    transition: all 0.3s ease;
}

#deckOptions.hidden,
#paperOptions.hidden {
    display: none;
}

.config-row {
    display: flex;
    align-items: center;
    gap: var(--s4);
    margin: var(--s3) 0;
    flex-wrap: wrap;
}

.config-label {
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text);
    opacity: 0.95;
    min-width: 130px;
}

/* MLA FORM */
.mla-form {
    display: flex;
    flex-direction: column;
    gap: var(--s3);
    width: 100%;
    box-sizing: border-box;
}

.form-row {
    display: flex;
    gap: var(--s3);
    flex-wrap: wrap;
}

.mla-form input {
    flex: 1;
    min-width: 200px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 14px 18px;
    color: white;
    font-family: var(--font-ui);
    transition: all 0.3s ease;
}

.mla-form input:focus {
    outline: none;
    border-color: var(--primary-light);
    background: rgba(0, 0, 0, 0.7);
    box-shadow: 0 0 15px rgba(109, 93, 252, 0.2);
}

.word-count-wrap {
    display: flex;
    align-items: center;
    gap: var(--s3);
    flex: 1;
    min-width: 250px;
}

/* ── LOADING — THINKING WAVEFORM FULL ─────────────────────── */
.loading-stage {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--s4);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 11, 26, 0.8);
    backdrop-filter: blur(8px);
    z-index: 10000;
    animation: fade-in 0.3s ease both;
}

#loadingStatus {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--primary-light);
    text-shadow: 0 0 20px var(--primary);
}

.loading-stage.visible {
    display: flex;
}

.loading-waveform {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 40px;
}

.lw-bar {
    width: 4px;
    border-radius: 3px;
    background: linear-gradient(180deg, var(--indigo-hi) 0%, var(--teal) 100%);
    animation: thinking-wave 1.2s ease-in-out infinite;
}

.lw-bar:nth-child(1) {
    height: 40%;
    animation-delay: 0s;
}

.lw-bar:nth-child(2) {
    height: 70%;
    animation-delay: 0.08s;
}

.lw-bar:nth-child(3) {
    height: 55%;
    animation-delay: 0.16s;
}

.lw-bar:nth-child(4) {
    height: 90%;
    animation-delay: 0.24s;
}

.lw-bar:nth-child(5) {
    height: 65%;
    animation-delay: 0.32s;
}

.lw-bar:nth-child(6) {
    height: 40%;
    animation-delay: 0.40s;
}

.lw-bar:nth-child(7) {
    height: 75%;
    animation-delay: 0.32s;
}

.lw-bar:nth-child(8) {
    height: 55%;
    animation-delay: 0.24s;
}

.lw-bar:nth-child(9) {
    height: 85%;
    animation-delay: 0.16s;
}

.lw-bar:nth-child(10) {
    height: 45%;
    animation-delay: 0.08s;
}

.lw-bar:nth-child(11) {
    height: 60%;
    animation-delay: 0s;
}

#loadingStatus {
    font-size: 0.9rem;
    color: var(--text-dim);
    font-style: italic;
}

/* ── PREVIEW SECTION ─────────────────────────────────────── */
.preview-section {
    margin-top: var(--s8);
    animation: fade-up 0.5s var(--ease-out) both;
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--s5);
    padding-bottom: var(--s4);
    border-bottom: 1px solid var(--bg-border);
}

.preview-header h2 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 400;
    font-style: italic;
    color: var(--text);
}

.export-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-elevated);
    color: var(--text);
    border: 1px solid var(--bg-border-hi);
    padding: 9px 18px;
    border-radius: 10px;
    font-family: var(--font-ui);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--dur-med) ease;
}

.export-btn:hover {
    background: var(--indigo);
    border-color: var(--indigo);
    color: white;
    transform: translateY(-1px);
}

/* ── SLIDE CANVAS ─────────────────────────────────────────── */
.deck-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    padding: var(--s6) 0 var(--s8);
}

.slide-wrapper {
    position: relative;
    overflow: visible;
    border-radius: 20px;
    /* Slide weight: subtle shadow adds depth */
    filter: drop-shadow(0 40px 60px rgba(0, 0, 0, 0.5)) drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
    transition: filter var(--dur-med) ease, transform var(--dur-med) ease;
}

.slide-wrapper:hover {
    filter: drop-shadow(0 50px 80px rgba(0, 0, 0, 0.6)) drop-shadow(0 12px 24px rgba(109, 93, 252, 0.1));
    transform: translateY(-2px);
}

/* ── MAGIC BAR ───────────────────────────────────────────── */
.magic-bar {
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-40%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: rgba(16, 19, 31, 0.95);
    /* Darker for better contrast */
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 8px;
    opacity: 1;
    pointer-events: auto;
    transition: all var(--dur-med) var(--ease-spring);
    z-index: 100;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    /* Reduced glow, increased weight */
}

.slide-wrapper:hover .magic-bar {
    transform: translateY(-50%) scale(1.05);
}

.magic-btn {
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-dim);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 8px;
    transition: all var(--dur-fast) ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.magic-btn.is-loading svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.magic-btn:hover {
    background: var(--bg-elevated);
    color: var(--text);
    transform: translateX(4px);
}

/* ── SLIDE ────────────────────────────────────────────────── */
.slide {
    background: var(--slide-bg);
    color: var(--slide-text);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Title slide — centered, clean, editable */
.slide.title-slide {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px;
}

.slide.title-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 100% 0%, var(--slide-accent), transparent 40%),
        radial-gradient(circle at 0% 100%, var(--slide-accent), transparent 20%);
    opacity: 0.12;
    z-index: 0;
    pointer-events: none;
}

.slide-title-main {
    font-family: var(--font-display);
    font-size: 6.5rem;
    font-weight: 400;
    line-height: 1;
    letter-spacing: -0.04em;
    font-style: italic;
    color: var(--slide-text);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
    max-width: 90%;
}

.slide-title-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300%;
    height: 300%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle at center, rgba(var(--slide-accent-rgb), 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity var(--dur-slow) var(--ease-out);
}

.slide-subtitle-main {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--slide-text);
    opacity: 0.55;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    padding: 0.8rem 3rem;
    border-top: 2px solid var(--slide-accent);
    position: relative;
    z-index: 1;
}

/* Content slides layout */
.slide:not(.title-slide):not(.branding-slide) {
    padding: 50px 60px;
}

/* Titlebar */
.slide-titlebar {
    flex-shrink: 0;
    margin-bottom: 28px;
}

.slide-titlebar h2 {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--slide-text);
    border-bottom: 6px solid var(--slide-accent);
    display: inline-block;
    padding-bottom: 0.2em;
    margin: 0;
}

/* Body row */
.slide-body {
    display: flex;
    gap: 48px;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.slide.layout-split-left .slide-body {
    flex-direction: row;
}

.slide.layout-split-right .slide-body {
    flex-direction: row-reverse;
}

.slide.layout-full-text .img-col {
    display: none;
}

.slide.layout-full-text .text-col {
    flex: 1;
    max-width: 100%;
}

/* Text column */
.text-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow-y: auto;
    min-width: 0;
}

.text-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.text-col li {
    font-size: 1.5rem;
    line-height: 1.55;
    color: var(--slide-text);
    opacity: 0.88;
    padding-left: 1.8em;
    position: relative;
}

.text-col li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.52em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--slide-accent);
}

.text-col::-webkit-scrollbar {
    width: 4px;
}

.text-col::-webkit-scrollbar-thumb {
    background: var(--slide-accent);
    border-radius: 10px;
}

/* Image column */
.img-col {
    flex: 1;
    display: flex;
    align-items: stretch;
    overflow: hidden;
    border-radius: 16px;
    min-width: 0;
    position: relative;
    /* Added to contain absolute placeholder */
}

.img-col img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
    transition: opacity 0.5s ease;
}

.loading img {
    opacity: 0;
}

.img-placeholder {
    display: none;
    position: absolute;
    inset: 0;
    align-items: center;
    justify-content: center;
    background: rgba(var(--slide-accent-rgb), 0.05);
    color: var(--slide-accent);
    font-size: 1.2rem;
    font-weight: 500;
    font-style: italic;
    border: 2px dashed rgba(var(--slide-accent-rgb), 0.2);
    border-radius: 16px;
    z-index: 1;
}

.loading .img-placeholder {
    display: flex;
    animation: placeholder-pulse 2s ease-in-out infinite;
}

@keyframes placeholder-pulse {

    0%,
    100% {
        opacity: 0.5;
        background: rgba(var(--slide-accent-rgb), 0.05);
    }

    50% {
        opacity: 1;
        background: rgba(var(--slide-accent-rgb), 0.1);
    }
}

.img-col.drag-over,
.top-img-wrap.drag-over {
    border: 4px dashed var(--slide-accent) !important;
    background: rgba(var(--slide-accent-rgb), 0.2) !important;
}

/* Top Image Layout */
.slide.layout-top-image {
    padding: 0;
    display: flex;
    flex-direction: column;
}

.layout-top-image .top-img-wrap {
    width: 100%;
    flex: 0 0 55%;
    position: relative;
    /* Already has relative, but re-confirming presence */
    overflow: hidden;
}

.layout-top-image .top-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.layout-top-image .top-img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 60%, var(--slide-bg) 100%);
    pointer-events: none;
}

.layout-top-image .bottom-text-wrap {
    flex: 1;
    padding: 30px 60px 50px;
    display: flex;
    flex-direction: column;
}

.layout-top-image .bottom-text-wrap h2 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--slide-text);
}

.layout-top-image .bottom-text-wrap ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.layout-top-image .bottom-text-wrap li {
    font-size: 1.4rem;
    line-height: 1.5;
    color: var(--slide-text);
    opacity: 0.88;
    padding-left: 1.5em;
    position: relative;
}

.layout-top-image .bottom-text-wrap li::before {
    content: '►';
    position: absolute;
    left: 0;
    top: 0.2em;
    font-size: 0.8em;
    color: var(--slide-accent);
}

/* Agenda slide */
.slide.layout-agenda {
    padding: 50px 60px;
}

.agenda-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    flex: 1;
    overflow-y: auto;
}

.agenda-item {
    font-size: 2rem;
    font-weight: 600;
    color: var(--slide-text);
    padding: 16px 24px;
    background: rgba(var(--slide-accent-rgb), 0.08);
    border-left: 8px solid var(--slide-accent);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.agenda-num {
    font-size: 1.5rem;
    opacity: 0.5;
    font-weight: 400;
    min-width: 2rem;
}

/* Content editable */
[contenteditable] {
    outline: none;
    cursor: text;
}

[contenteditable]:hover {
    background: rgba(109, 93, 252, 0.06);
    border-radius: 4px;
}

[contenteditable]:focus {
    background: rgba(109, 93, 252, 0.1);
    border-radius: 4px;
}

/* Branding slide */
.slide.branding-slide {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 !important;
}

.branding-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(var(--slide-accent-rgb), 0.15) 0%, transparent 70%);
}

.branding-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.branding-thanks {
    font-size: 6rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--slide-text);
    margin: 0;
}

.branding-author {
    font-size: 1.8rem;
    color: var(--slide-text);
    opacity: 0.7;
    margin: 0;
}

.branding-by {
    font-size: 1.4rem;
    color: var(--slide-text);
    opacity: 0.5;
    margin: 0;
}

.branding-qr-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
}

.branding-qr {
    width: 180px;
    height: 180px;
    border-radius: 12px;
}

.qr-hint {
    font-size: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slide-accent);
    font-weight: 700;
    margin: 0;
}

.slide-counter {
    position: absolute;
    bottom: 20px;
    right: 28px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--slide-accent);
    opacity: 0.5;
}

/* ── THEME SWITCHER SIDEBAR ──────────────────────────────── */
.theme-switcher {
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 200;
    background: var(--bg-surface);
    border: 1px solid var(--bg-border-hi);
    border-radius: 16px;
    padding: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.theme-opt {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--dur-med) var(--ease-spring), box-shadow var(--dur-med) ease;
    position: relative;
}

.theme-opt[data-theme="modern"] {
    background: linear-gradient(135deg, #6d5dfc, #0dd9c3);
}

.theme-opt[data-theme="classic"] {
    background: linear-gradient(135deg, #d4af37, #8B6914);
}

.theme-opt[data-theme="cyberpunk"] {
    background: linear-gradient(135deg, #ff00ff, #00ffff);
}

.theme-opt[data-theme="botanic"] {
    background: linear-gradient(135deg, #10b981, #064e3b);
}

.theme-opt[data-theme="minimalist"] {
    background: linear-gradient(135deg, #888, #111);
}

.theme-opt:hover {
    transform: scale(1.25);
}

.theme-opt.active {
    transform: scale(1.15);
    box-shadow: 0 0 0 2px var(--bg-surface), 0 0 0 4px rgba(109, 93, 252, 0.6);
}

/* ── PAPER SECTION ───────────────────────────────────────── */
.paper-section {
    margin-top: var(--s8);
    animation: fade-up 0.5s var(--ease-out) both;
    overflow-x: hidden;
    /* Prevent document scaling bleed */
}

.mla-document {
    background: #ffffff;
    color: #111;
    font-family: 'Times New Roman', Times, serif;
    font-size: 1.1rem;
    line-height: 2.0;
    /* Double spacing */
    padding: 2.5cm 2cm;
    width: 210mm;
    /* A4 width */
    min-height: 297mm;
    margin: 0 auto;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: left;
    transform-origin: top center;
    /* Added for JS scaling */
    transition: transform 0.3s ease;
}

.mla-document h1,
.mla-document h2 {
    font-family: inherit;
    font-weight: bold;
    text-align: center;
    margin: 1.5rem 0;
    line-height: 1.2;
}

.mla-document p {
    margin-bottom: 1.5rem;
    text-indent: 0.5in;
}

/* MLA First Page Header */
.mla-header {
    text-align: left;
    margin-bottom: 2rem;
    line-height: 1.5;
}

/* ── CELEBRATION / EXPORT ────────────────────────────────── */
.celebration-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.confetti-piece {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    animation: confetti-fall 1s ease-out forwards;
}

/* ── BRANDING SLIDE ──────────────────────────────────────── */
.branding-layout {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    padding: var(--s8) !important;
    text-align: center;
    background: radial-gradient(circle at center, rgba(109, 93, 252, 0.05) 0%, transparent 70%);
}

.branding-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--s4);
    animation: fade-up 0.8s ease both;
}

.branding-thanks {
    font-size: 5rem !important;
    font-weight: 800;
    margin-bottom: var(--s2) !important;
    background: linear-gradient(135deg, var(--primary-light), white);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.branding-by,
.branding-author {
    font-size: 1.5rem;
    color: var(--text-light);
    opacity: 0.8;
}

.branding-qr-wrap {
    margin: var(--s6) 0;
    padding: var(--s4);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.branding-qr {
    width: 250px;
    height: 250px;
    border-radius: 12px;
    filter: brightness(1.1);
}

.qr-hint {
    margin-top: var(--s2);
    font-size: 0.9rem;
    color: var(--primary-light);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.branding-link {
    font-family: var(--font-mono);
    color: var(--primary-light);
    text-decoration: none;
    font-size: 1.1rem;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.branding-link:hover {
    opacity: 1;
}

/* ── FOOTER ──────────────────────────────────────────────── */
footer {
    text-align: center;
    padding: var(--s7) 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

footer span {
    color: var(--text-dim);
}

/* ── REFERENCES ──────────────────────────────────────────── */
.references-section {
    background: var(--bg-surface);
    border: 1px solid var(--bg-border);
    border-radius: 16px;
    padding: var(--s6);
    margin-top: var(--s5);
}

.ref-item {
    font-size: 0.8rem;
    color: var(--text-dim);
    padding: 8px 0;
    border-bottom: 1px solid var(--bg-border);
    display: flex;
    gap: var(--s3);
}

.ref-item:last-child {
    border-bottom: none;
}

.ref-item a {
    color: var(--indigo-hi);
}

/* ── RESPONSIVE REFINEMENTS ──────────────────────────────── */
@media (max-width: 1024px) {
    .page-wrap {
        padding: 0 var(--s4);
    }

    .hero h1 {
        font-size: clamp(2.4rem, 8vw, 4rem);
    }
}

@media (max-width: 768px) {
    .nav-badge {
        display: none;
    }

    .hero {
        padding: var(--s6) 0;
    }

    .plan-vibe-strip {
        flex-wrap: wrap;
        justify-content: center;
    }

    .vibe-swatch {
        flex: 1 1 120px;
    }

    /* Mobile Magic Bar - Stack below slide */
    .slide-wrapper {
        margin-bottom: 60px !important;
    }

    .magic-bar {
        position: absolute !important;
        top: 100% !important;
        left: 50% !important;
        right: auto !important;
        bottom: auto !important;
        transform: translateX(-50%) !important;
        width: max-content !important;
        margin-top: 15px;
        padding: 10px !important;
        background: var(--bg-surface) !important;
        border: 1px solid var(--bg-border-hi) !important;
        border-radius: 12px !important;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5) !important;
        display: flex !important;
        flex-direction: row !important;
        gap: 10px;
        justify-content: center !important;
    }

    /* Mobile Theme Switcher - Horizontal bar */
    .theme-switcher {
        position: fixed !important;
        right: 10px !important;
        top: 10px !important;
        bottom: auto !important;
        transform: none !important;
        flex-direction: row !important;
        padding: 5px !important;
        background: var(--bg-surface) !important;
        opacity: 0.9;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-sub {
        font-size: 0.95rem;
    }

    .nav-logo {
        font-size: 1.2rem;
    }

    .slide.title-slide {
        padding: 30px 20px;
    }

    .slide-title-main {
        font-size: 2.6rem;
    }

    .slide-subtitle {
        font-size: 0.85rem;
    }

    .mla-document {
        padding: 30px 15px;
    }
}

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

.small-btn {
    /* kept for compatibility */
    font-family: var(--font-ui);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    background: var(--bg-elevated);
    border: 1px solid var(--bg-border);
    padding: 5px 14px;
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--dur-med) ease;
}

.small-btn.active {
    background: rgba(109, 93, 252, 0.15);
    border-color: rgba(109, 93, 252, 0.4);
    color: var(--indigo-hi);
}

/* ── PRINT STYLES ────────────────────────────────────────── */
@media print {

    /* 1. Presentation Mode (Full-Page 16:9 Landscape) */
    body.printing-slides {
        margin: 0 !important;
        padding: 0 !important;
        background: black !important;
    }

    body.printing-slides .aurora-bg,
    body.printing-slides .nav,
    body.printing-slides .hero,
    body.printing-slides .plan-card,
    body.printing-slides footer,
    body.printing-slides .theme-switcher,
    body.printing-slides .magic-bar,
    body.printing-slides .paper-section,
    body.printing-slides .preview-header,
    body.printing-slides .loading-stage {
        display: none !important;
        visibility: hidden !important;
    }

    @page {
        margin: 0;
    }

    html,
    body.printing-slides {
        margin: 0 !important;
        padding: 0 !important;
        overflow: hidden !important;
    }

    body.printing-slides .slide-wrapper {
        width: 100vw !important;
        height: 100vh !important;
        margin: 0 !important;
        padding: 0 !important;
        page-break-after: always;
        break-after: page;
        display: block !important;
        transform: none !important;
        filter: none !important;
        background: black !important;
    }

    body.printing-slides .slide {
        transform: none !important;
        width: 100vw !important;
        height: 100vh !important;
        margin: 0 !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        overflow: hidden !important;
    }

    /* 2. Paper Mode (Clean A4 Document) */
    /* ── SLIDE PRINTING ────────────────────────────────────────── */
    body.printing-slides {
        background: white !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* Hide EVERYTHING except the presentation preview container */
    body.printing-slides>*:not(#previewSection),
    body.printing-slides #previewSection>*:not(#presentationPreview),
    body.printing-slides .aurora-bg,
    body.printing-slides .magic-bar,
    body.printing-slides .preview-header,
    body.printing-slides .celebration-overlay,
    body.printing-slides footer {
        display: none !important;
        visibility: hidden !important;
    }

    body.printing-slides #previewSection,
    body.printing-slides #presentationPreview {
        display: block !important;
        margin: 0 !important;
        padding: 0 !important;
        position: static !important;
    }

    body.printing-slides .deck-container {
        display: block !important;
        padding: 0 !important;
        margin: 0 !important;
        gap: 0 !important;
    }

    body.printing-slides .slide-wrapper {
        width: 100vw !important;
        height: 100vh !important;
        min-width: 100% !important;
        min-height: 100% !important;
        transform: none !important;
        margin: 0 !important;
        padding: 0 !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        page-break-after: always !important;
        break-after: page !important;
        display: flex !important;
        align-items: center;
        justify-content: center;
        overflow: hidden !important;
    }

    body.printing-slides .slide {
        transform: scale(1) !important;
        /* Force internal scale to 1 */
        margin: 0 !important;
        box-shadow: none !important;
        border: none !important;
    }

    /* ── PAPER PRINTING ────────────────────────────────────────── */
    body.printing-paper {
        background: white !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    body.printing-paper>*:not(#paperSection),
    body.printing-paper #paperSection>*:not(#paperPreview),
    body.printing-paper .aurora-bg,
    body.printing-paper .theme-switcher,
    body.printing-paper .celebration-overlay,
    body.printing-paper footer {
        display: none !important;
        visibility: hidden !important;
    }

    body.printing-paper #paperSection,
    body.printing-paper #paperPreview {
        display: block !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    body.printing-paper .mla-document {
        box-shadow: none !important;
        border-radius: 0 !important;
        padding: 0 !important;
        /* Rely on browser print margins */
        margin: 0 !important;
        width: 100% !important;
        background: white !important;
        font-size: 12pt !important;
        /* Standard academic size */
        color: black !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    @page {
        margin: 1in;
    }

    @page :first {
        margin-top: 0.5in;
    }
}

/* ── REDUCED MOTION ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}