/* ===================================
   SHARED PRESENTATION STYLES
   Day Lectures — Whyspace Pattern
   =================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-primary: #0a0e17;
    --glass-bg: rgba(10, 14, 23, 0.78);
    --glass-border: rgba(255, 255, 255, 0.1);
    --accent: #38bdf8;
    --accent-2: #818cf8;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --success: #10b981;
}

body {
    background: var(--bg-primary);
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
    overflow: hidden;
    height: 100vh;
    line-height: 1.7;
}

/* ==================
   BACKGROUND
   ================== */
#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
}
.bg-overlay {
    position: fixed;
    inset: 0;
    z-index: 1;
    background: radial-gradient(ellipse at 30% 40%, rgba(56, 189, 248, 0.06), transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(129, 140, 248, 0.05), transparent 50%);
    pointer-events: none;
}

/* ==================
   PROGRESS BAR
   ================== */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    z-index: 100;
    transition: width 0.4s ease;
    box-shadow: 0 0 12px var(--accent);
}

/* ==================
   TOP NAV
   ================== */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 2rem;
}
.nav-brand {
    font-weight: 800;
    font-size: 0.85rem;
    color: var(--accent);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.nav-brand span { color: var(--text-muted); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 1rem; }
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: #fff; }

/* ==================
   SLIDE VIEWPORT
   ================== */
.slide-viewport {
    position: fixed;
    inset: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    padding: 4rem 5% 5rem;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem;
    max-width: 720px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.glass-panel.active {
    opacity: 1;
    transform: translateY(0);
}
.glass-panel::-webkit-scrollbar { width: 4px; }
.glass-panel::-webkit-scrollbar-track { background: transparent; }
.glass-panel::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

/* ==================
   SLIDE TYPOGRAPHY
   ================== */
.slide h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #fff, var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.slide h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 1rem;
}
.slide h3 {
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}
.slide p {
    color: var(--text-main);
    opacity: 0.9;
    margin-bottom: 1rem;
    font-size: 1.05rem;
}
.slide .subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}
.slide em { color: var(--accent); font-style: normal; font-weight: 700; }
.slide strong { color: #fff; }
.slide ul, .slide ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}
.slide li {
    margin-bottom: 0.6rem;
    color: var(--text-main);
    opacity: 0.9;
}
.slide blockquote {
    border-left: 3px solid var(--accent);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: rgba(56, 189, 248, 0.05);
    border-radius: 0 12px 12px 0;
    font-size: 1.05rem;
}
.slide code {
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.9em;
}
.slide pre {
    background: rgba(0,0,0,0.4);
    padding: 1.2rem;
    border-radius: 12px;
    overflow-x: auto;
    border: 1px solid var(--glass-border);
    margin: 1rem 0;
}
.slide pre code {
    background: none;
    padding: 0;
    color: #e2e8f0;
}
.slide img {
    width: 100%;
    border-radius: 12px;
    margin: 1rem 0;
    border: 1px solid var(--glass-border);
}
.slide a { color: var(--accent); text-decoration: underline; }

/* ==================
   SLIDE COMPONENTS
   ================== */
.demo-tag {
    display: inline-block;
    background: var(--success);
    color: #000;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.2rem 0.7rem;
    border-radius: 4px;
    letter-spacing: 1.5px;
    margin-bottom: 1rem;
    text-transform: uppercase;
}
.mini-event-tag {
    display: inline-block;
    background: #f472b6;
    color: #000;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.2rem 0.7rem;
    border-radius: 4px;
    letter-spacing: 1.5px;
    margin-bottom: 1rem;
    text-transform: uppercase;
}
.stat-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1.5rem 0;
}
.stat-box {
    flex: 1;
    min-width: 100px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
}
.stat-box .val {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}
.stat-box .lbl {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.step-list {
    counter-reset: step;
    list-style: none;
    padding: 0;
}
.step-list li {
    counter-increment: step;
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    padding: 0.5rem 0;
}
.step-list li::before {
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 50%;
    font-weight: 800;
    font-size: 0.75rem;
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 2px;
}
.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}
.compare-table th, .compare-table td {
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--glass-border);
    text-align: left;
    font-size: 0.9rem;
}
.compare-table th {
    color: var(--accent);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.compare-table td:first-child { font-weight: 600; color: #fff; }

.cta-link {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.6rem 1.4rem;
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(56, 189, 248, 0.4);
    color: #38bdf8;
    font-weight: 700;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem;
}
.cta-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.3);
}

/* Award badges */
.award-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.8rem;
    background: rgba(251, 191, 36, 0.08);
    border: 1px solid rgba(251, 191, 36, 0.2);
    border-radius: 6px;
    font-size: 0.8rem;
    color: #fbbf24;
    font-weight: 600;
    margin: 0.3rem 0.3rem 0 0;
}

/* Showcase format cards */
.format-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.2rem;
    margin-bottom: 0.8rem;
    transition: border-color 0.2s;
}
.format-card:hover { border-color: rgba(56, 189, 248, 0.3); }
.format-card h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 0.4rem;
}
.format-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

/* ==================
   CONTROLS DOCK
   ================== */
.controls {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 0;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 0.4rem 0.6rem;
}
.ctrl-btn {
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
    font-size: 1.1rem;
}
.ctrl-btn:hover { color: #fff; background: rgba(255,255,255,0.08); }
.ctrl-btn:active { transform: scale(0.9); }
.slide-counter {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    padding: 0 0.8rem;
    min-width: 50px;
    text-align: center;
    user-select: none;
}
.ctrl-divider {
    width: 1px;
    height: 20px;
    background: var(--glass-border);
    margin: 0 0.3rem;
}

/* ==================
   RESPONSIVE
   ================== */
@media (max-width: 768px) {
    .slide-viewport {
        padding: 3.5rem 1rem 5rem;
        align-items: flex-start;
    }
    .glass-panel {
        max-width: 100%;
        max-height: 85vh;
        padding: 2rem 1.5rem;
        border-radius: 16px;
    }
    .slide h1 { font-size: 2rem; }
    .slide h2 { font-size: 1.4rem; }
    .stat-row { gap: 0.5rem; }
    .stat-box { min-width: 80px; padding: 0.7rem; }
    .stat-box .val { font-size: 1.3rem; }
    .top-nav { padding: 0.6rem 1rem; }
}