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

/* Tokyo Night Light */
:root, [data-theme="light"] {
    --bg:         #e1e2e7;
    --bg-card:    #d5d6db;
    --bg-card2:   #cbccd1;
    --text:       #3760bf;
    --text-muted: #6172b0;
    --accent:     #2e7de9;
    --accent-bg:  #2e7de915;
    --glow-color: rgba(46,125,233,0.22);
    --border:     #9899a3;
    --nav-bg:     rgba(225,226,231,0.82);
    --shadow:     0 2px 24px rgba(55,96,191,0.10);
    --radius:     18px;
    --tag-bg:     #c4c8da;
    /* syntax pop colors */
    --tn-red:     #f52a65;
    --tn-orange:  #b35900;
    --tn-yellow:  #8c6c3e;
    --tn-green:   #587539;
    --tn-cyan:    #007197;
    --tn-blue:    #2e7de9;
    --tn-purple:  #9854f1;
    --tn-teal:    #007197;
}

/* Tokyo Night Dark (Storm) */
[data-theme="dark"] {
    --bg:         #24283b;
    --bg-card:    #1f2335;
    --bg-card2:   #1a1b26;
    --text:       #c0caf5;
    --text-muted: #565f89;
    --accent:     #7aa2f7;
    --accent-bg:  #7aa2f720;
    --glow-color: rgba(122,162,247,0.25);
    --border:     #292e42;
    --nav-bg:     rgba(26,27,38,0.82);
    --shadow:     0 2px 32px rgba(0,0,0,0.40);
    --radius:     18px;
    --tag-bg:     #292e42;
    /* syntax pop colors */
    --tn-red:     #f7768e;
    --tn-orange:  #ff9e64;
    --tn-yellow:  #e0af68;
    --tn-green:   #9ece6a;
    --tn-cyan:    #7dcfff;
    --tn-blue:    #7aa2f7;
    --tn-purple:  #bb9af7;
    --tn-teal:    #73daca;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Sora', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    transition: background 0.3s, color 0.3s;
    overflow-x: hidden;
}

/* Grain overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 999;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

/* Nav */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s;
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'Fraunces', serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-logo span { color: var(--accent); }

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--accent); }

.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 999px;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
    color: var(--text-muted);
    flex-shrink: 0;
}

.theme-toggle:hover { background: var(--accent); border-color: var(--accent); color: #fff; transform: rotate(20deg); }
.theme-toggle svg { width: 15px; height: 15px; transition: opacity 0.2s; }
.theme-toggle .icon-moon { display: none; }
.theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: none; }

/* Hero */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 40px;
    align-items: center;
    padding: 120px 24px 80px;
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
}

.dot-grid {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.hero-content, .tetris-panel, .hero-deco, .hero-deco2 {
    position: relative;
    z-index: 1;
}

.hero-content { max-width: 620px; }

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 28px;
}

.hero-eyebrow::before {
    content: '';
    display: block;
    width: 28px;
    height: 1px;
    background: var(--accent);
}

.hero-name {
    font-family: 'Fraunces', serif;
    font-size: clamp(3.2rem, 8vw, 7rem);
    font-weight: 700;
    line-height: 0.95;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 32px;
}

.hero-name em {
    font-style: italic;
    font-weight: 300;
    color: var(--accent);
}

.hero-bio {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.75;
    max-width: 520px;
    margin-bottom: 44px;
}

.hero-bio strong {
    color: var(--text);
    font-weight: 500;
}

.hero-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 48px;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--bg-card);
    letter-spacing: 0.02em;
}

.pill svg { opacity: 0.6; }

.hero-scroll {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.hero-scroll:hover { color: var(--accent); }

.hero-scroll-line {
    width: 40px;
    height: 1px;
    background: currentColor;
    display: block;
}

/* Floating deco */
.hero-deco {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-bg) 0%, transparent 70%);
    pointer-events: none;
    filter: blur(40px);
}

.hero-deco2 {
    position: absolute;
    right: 80px;
    top: 50%;
    transform: translateY(-50%);
    width: 200px;
    height: 200px;
    border: 1px solid var(--border);
    border-radius: 50%;
    pointer-events: none;
    opacity: 0.5;
    animation: spin 30s linear infinite;
}

.hero-deco2::after {
    content: '';
    position: absolute;
    top: -4px; left: 50%;
    transform: translateX(-50%);
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
}

@keyframes spin {
    from { transform: translateY(-50%) rotate(0deg); }
    to   { transform: translateY(-50%) rotate(360deg); }
}

/* Section */
section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 24px;
}

.section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 48px;
    gap: 16px;
    flex-wrap: wrap;
}

.section-title {
    font-family: 'Fraunces', serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1;
}

.section-title em {
    font-style: italic;
    font-weight: 300;
    color: var(--accent);
}

.section-count {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* Bento Grid */
.bento {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 240px;
    gap: 14px;
}

@property --gradient-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

@keyframes rotateBorder {
  to { --gradient-angle: 360deg; }
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-decoration: none;
    color: var(--text);
    position: relative;
    overflow: hidden;
    transition: transform 0.25s cubic-bezier(0.25,0.46,0.45,0.94),
                box-shadow 0.25s, border-color 0.25s, background 0.25s;
}

.card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius);
    background: radial-gradient(circle 180px at var(--mx,50%) var(--my,50%), var(--glow-color, rgba(76,175,80,0.22)), transparent 70%);
    opacity: 0;
    transition: opacity 0.25s;
    pointer-events: none;
    z-index: 0;
}

.card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from var(--gradient-angle), var(--card-color, var(--accent)), transparent 30%, transparent 70%, var(--card-color, var(--accent)));
    border-radius: var(--radius);
    opacity: 0;
    pointer-events: none;
    z-index: -1;
}

.card:hover::after { 
    opacity: 1;
    animation: rotateBorder 4s linear infinite;
}

.card:hover { 
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--card-color, var(--accent));
}

.card:hover::before { opacity: 1; }

.card-tags, .card-body, .card-cta, .card-num { position: relative; z-index: 1; }
.card-wide  { grid-column: span 2; }
.card-tall  { grid-row: span 2; }
.card-big   { grid-column: span 2; grid-row: span 2; }

/* per-card Tokyo Night pop colors */
.card-cyan   { --card-color: var(--tn-cyan);   --card-glow: color-mix(in srgb, var(--tn-cyan) 18%, transparent); }
.card-purple { --card-color: var(--tn-purple); --card-glow: color-mix(in srgb, var(--tn-purple) 18%, transparent); }
.card-green  { --card-color: var(--tn-green);  --card-glow: color-mix(in srgb, var(--tn-green) 18%, transparent); }
.card-orange { --card-color: var(--tn-orange); --card-glow: color-mix(in srgb, var(--tn-orange) 18%, transparent); }

/* override ::before glow with card color */
.card-cyan::before, .card-purple::before, .card-green::before, .card-orange::before {
    background: radial-gradient(circle 180px at var(--mx,50%) var(--my,50%), var(--card-glow), transparent 70%);
}

/* top border strip */
.card-cyan::after, .card-purple::after, .card-green::after, .card-orange::after {
    content: '';
    position: absolute;
    top: 0; left: 16px; right: 16px;
    height: 2px;
    border-radius: 999px;
    background: var(--card-color);
    opacity: 0.7;
    z-index: 1;
}

/* alternate card bg */
.card:nth-child(even) { background: var(--bg-card2); }

.card-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tag {
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--tag-bg);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--card-color, var(--text-muted));
    border: 1px solid color-mix(in srgb, var(--card-color, var(--border)) 35%, transparent);
}

.card-body { flex: 1; padding: 20px 0 12px; }

.card-title {
    font-family: 'Fraunces', serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
    line-height: 1.15;
}

.card-desc {
    font-size: 0.83rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.card-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--card-color, var(--accent));
    text-decoration: none;
    transition: gap 0.2s;
}

.card:hover .card-cta { gap: 12px; }

.card-cta-arrow {
    width: 20px; height: 20px;
    border-radius: 50%;
    border: 1px solid var(--card-color, var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 11px;
    transition: background 0.2s, color 0.2s;
}

.card:hover .card-cta-arrow {
    background: var(--card-color, var(--accent));
    color: #fff;
}

.card-num {
    position: absolute;
    top: 20px; right: 24px;
    font-family: 'Fraunces', serif;
    font-size: 4rem;
    font-weight: 700;
    color: color-mix(in srgb, var(--card-color, var(--border)) 25%, transparent);
    line-height: 1;
    pointer-events: none;
    user-select: none;
    transition: color 0.3s;
}

.card:hover .card-num { color: color-mix(in srgb, var(--card-color, var(--accent)) 45%, transparent); }

/* About strip */
.about-strip {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 14px;
    padding: 80px 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
}

.stat-num {
    font-family: 'Fraunces', serif;
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--text);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-num span { color: var(--accent); }

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-name {
    font-family: 'Fraunces', serif;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.footer-copy {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
    opacity: 0;
    animation: fadeUp 0.7s cubic-bezier(0.25,0.46,0.45,0.94) forwards;
}

.fade-up:nth-child(1) { animation-delay: 0.1s; }
.fade-up:nth-child(2) { animation-delay: 0.2s; }
.fade-up:nth-child(3) { animation-delay: 0.3s; }
.fade-up:nth-child(4) { animation-delay: 0.4s; }
.fade-up:nth-child(5) { animation-delay: 0.5s; }

.card {
    opacity: 1;
}
.card.animate-in {
    animation: fadeUp 0.55s cubic-bezier(0.25,0.46,0.45,0.94) both;
}

/* Responsive */
@media (max-width: 900px) {
    .bento {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 220px;
    }
    .card-wide  { grid-column: span 2; }
    .card-tall  { grid-row: span 1; }
    .card-big   { grid-column: span 2; grid-row: span 1; }
    .about-strip { grid-template-columns: 1fr 1fr; }
    .hero-deco, .hero-deco2 { display: none; }
}

@media (max-width: 600px) {
    .bento {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    }
    .card { padding: 24px; min-height: 200px; }
    .card-wide, .card-tall, .card-big { grid-column: span 1; grid-row: span 1; }
    .about-strip { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .hero { padding-top: 100px; }
    footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .hero-name { font-size: 3rem; }
    .section-title { font-size: 2rem; }
}
/* Tetris Panel */
.tetris-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    align-self: center;
}

.tetris-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.tetris-title {
    font-family: 'Fraunces', serif;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.tetris-meta {
    display: flex;
    gap: 12px;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}

.tetris-meta span { color: var(--accent); font-weight: 700; font-family: 'Fraunces', serif; font-size: 0.85rem; }

#tetris-canvas {
    border-radius: 6px;
    border: 1px solid var(--border);
    display: block;
}

.tetris-next-wrap {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tetris-next-label {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
}

#tetris-next {
    border-radius: 4px;
    border: 1px solid var(--border);
    display: block;
}

.tetris-btns {
    display: flex;
    gap: 6px;
    width: 100%;
}

.tetris-btn {
    flex: 1;
    padding: 7px 0;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card2);
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.tetris-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

.tetris-controls {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 5px;
    width: 100%;
}

.t-ctrl {
    padding: 6px 0;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-card2);
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    text-align: center;
    transition: background 0.15s, color 0.15s;
}

.t-ctrl:hover { background: var(--accent); color: #fff; }

.tetris-hint {
    font-size: 0.62rem;
    color: var(--text-muted);
    text-align: center;
    opacity: 0.7;
}

@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; }
    .tetris-panel { display: none; }
}