/* Terminal43CTF - Preview Page Styles */

/* ── Scroll-reveal animation (JS adds .preview-reveal on load) ── */
.preview-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.preview-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger > *:nth-child(1) { transition-delay: 0.05s; }
.stagger > *:nth-child(2) { transition-delay: 0.10s; }
.stagger > *:nth-child(3) { transition-delay: 0.15s; }
.stagger > *:nth-child(4) { transition-delay: 0.20s; }
.stagger > *:nth-child(5) { transition-delay: 0.25s; }
.stagger > *:nth-child(6) { transition-delay: 0.30s; }
.stagger > *:nth-child(7) { transition-delay: 0.35s; }
.stagger > *:nth-child(8) { transition-delay: 0.40s; }
.stagger > *:nth-child(9) { transition-delay: 0.45s; }
.stagger > *:nth-child(10) { transition-delay: 0.50s; }
.stagger > *:nth-child(11) { transition-delay: 0.55s; }
.stagger > *:nth-child(12) { transition-delay: 0.60s; }

/* ── Matrix rain canvas ── */
#matrix-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}
html:not(.dark) #matrix-canvas {
    opacity: 0.04;
}

/* ── Hero terminal mockup ── */
.preview-terminal {
    background: #0d1117;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    overflow: hidden;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    max-width: 480px;
    margin: 0 auto;
    text-align: left;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}
html:not(.dark) .preview-terminal {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}
.preview-terminal-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
}
.preview-terminal-body {
    padding: 1rem 1.25rem;
    line-height: 1.7;
    color: #e6edf3;
    min-height: 160px;
    white-space: pre-wrap;
    word-break: break-word;
}
.preview-terminal-body .prompt { color: var(--green); }
.preview-terminal-body .cmd { color: #e6edf3; }
.preview-terminal-body .output { color: var(--cyan); }
.preview-terminal-body .comment { color: #6e7681; }

/* ── Stat counters ── */
.counter-value {
    font-variant-numeric: tabular-nums;
    font-family: 'JetBrains Mono', monospace;
}

/* ── Section dividers ── */
.preview-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color) 20%, var(--cyan) 50%, var(--border-color) 80%, transparent);
    opacity: 0.5;
}

/* ── Practice mode cards ── */
.practice-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}
.practice-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent, var(--cyan));
    opacity: 0;
    transition: opacity 0.3s;
}
.practice-card:hover {
    border-color: var(--card-accent, rgba(0, 240, 255, 0.3));
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}
.practice-card:hover::before { opacity: 1; }

/* Card accent colors */
.practice-card[data-accent="cyan"] { --card-accent: var(--cyan); }
.practice-card[data-accent="green"] { --card-accent: var(--green); }
.practice-card[data-accent="red"] { --card-accent: var(--red); }
.practice-card[data-accent="yellow"] { --card-accent: var(--yellow); }
.practice-card[data-accent="purple"] { --card-accent: var(--purple); }
.practice-card[data-accent="blue"] { --card-accent: #3b82f6; }

/* ── Mini mockup frames ── */
.mockup-frame {
    background: #0d1117;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    line-height: 1.5;
    color: #8b949e;
    overflow: hidden;
    transition: transform 0.3s;
}
.mockup-frame:hover {
    transform: perspective(800px) rotateY(-2deg) rotateX(1deg);
}

/* ── Compete section alternating blocks ── */
.compete-block {
    display: flex;
    align-items: center;
    gap: 3rem;
}
.compete-block:nth-child(even) {
    flex-direction: row-reverse;
}
@media (max-width: 768px) {
    .compete-block,
    .compete-block:nth-child(even) {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* ── Skill radar (CSS/SVG) ── */
.radar-container {
    width: 220px;
    height: 220px;
    position: relative;
    margin: 0 auto;
}

/* ── Badge circles ── */
.badge-circle {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    border: 2px solid var(--border-color);
    background: var(--bg-surface);
    transition: all 0.3s;
}
.badge-circle:hover {
    transform: scale(1.15);
    border-color: var(--cyan);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
}

/* ── Mini heatmap ── */
.mini-heatmap {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2px;
}
.mini-heatmap-cell {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 2px;
    background: var(--border-color);
}

/* ── Course card mockup ── */
.course-card-mock {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    transition: all 0.3s;
}
.course-card-mock:hover {
    border-color: rgba(0, 240, 255, 0.3);
    transform: translateY(-2px);
}

/* ── Progress bar ── */
.progress-bar {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}
.progress-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--cyan), var(--green));
    transition: width 0.8s ease-out;
}

/* ── Learning path nodes ── */
.path-node {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    transition: all 0.3s;
}
.path-node.completed {
    background: rgba(0, 240, 255, 0.15);
    border-color: var(--cyan);
    color: var(--cyan);
}
.path-node.current {
    background: rgba(57, 255, 20, 0.15);
    border-color: var(--green);
    color: var(--green);
    box-shadow: 0 0 12px rgba(57, 255, 20, 0.2);
}
.path-connector {
    flex: 1;
    height: 2px;
    background: var(--border-color);
    min-width: 1.5rem;
}
.path-connector.completed {
    background: linear-gradient(90deg, var(--cyan), var(--green));
}

/* ── Category grid cards ── */
.category-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem 1.25rem;
    text-align: center;
    transition: all 0.3s;
    cursor: default;
}
.category-card:hover {
    border-color: rgba(0, 240, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ── Scroll indicator ── */
@keyframes scroll-bounce {
    0%, 100% { transform: translateY(0); opacity: 0.6; }
    50% { transform: translateY(8px); opacity: 1; }
}
.scroll-indicator {
    animation: scroll-bounce 2s ease-in-out infinite;
}

/* ── CTA gradient ── */
.cta-gradient {
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(57, 255, 20, 0.05));
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
html:not(.dark) .cta-gradient {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.05), rgba(16, 185, 129, 0.05));
}

/* ── Scoreboard mockup ── */
.scoreboard-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4rem 0.6rem;
    border-radius: 0.25rem;
    font-size: 0.7rem;
    font-family: 'JetBrains Mono', monospace;
    color: #8b949e;
}
.scoreboard-row:nth-child(1) { color: var(--yellow); }
.scoreboard-row:nth-child(2) { color: #c0c0c0; }
.scoreboard-row:nth-child(3) { color: #cd7f32; }

/* ── VS badge ── */
.vs-badge {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--red), #ff6b6b);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 700;
    box-shadow: 0 0 15px rgba(255, 49, 49, 0.3);
}

/* ── Certificate mockup ── */
.certificate-mock {
    background: linear-gradient(135deg, var(--bg-surface), rgba(0, 240, 255, 0.03));
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    position: relative;
}
.certificate-seal {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    .preview-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .stagger > * { transition-delay: 0s !important; }
    .scroll-indicator { animation: none; opacity: 0.6; }
    .practice-card:hover,
    .course-card-mock:hover,
    .category-card:hover {
        transform: none;
    }
    .mockup-frame:hover { transform: none; }
    #matrix-canvas { display: none; }
}