/* ── Reset ── */
[x-cloak] { display: none !important; }
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design tokens ── */
:root {
    --bg:           #08080a;
    --bg-2:         #0f0f12;
    --bg-3:         #141418;
    --bg-hover:     #1a1a1f;
    --border:       rgba(255,255,255,0.055);
    --border-hover: rgba(255,255,255,0.10);
    --text:         #f2f2f4;
    --text-2:       #a8a8b3;
    --text-3:       #6b6b78;
    --lime:         #b5ff3d;
    --lime-dim:     rgba(181,255,61,0.07);
    --lime-border:  rgba(181,255,61,0.18);
}

[data-theme="light"] {
    --bg:           #f5f5f7;
    --bg-2:         #ffffff;
    --bg-3:         #e8e8ed;
    --bg-hover:     #dcdce4;
    --border:       rgba(0,0,0,0.09);
    --border-hover: rgba(0,0,0,0.16);
    --text:         #1a1a1e;
    --text-2:       #4a4a55;
    --text-3:       #88888f;
    --lime:         #5c9900;
    --lime-dim:     rgba(92,153,0,0.07);
    --lime-border:  rgba(92,153,0,0.22);
}

/* ── Base ── */
html { scroll-behavior: smooth; }

body {
    font-family: 'Space Grotesk', 'Noto Sans JP', system-ui, sans-serif;
    font-size: 15px;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection { background: rgba(181,255,61,0.25); color: var(--text); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 99px; }

/* ── Header ── */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(8,8,10,0.82);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
}
[data-theme="light"] .header { background: rgba(245,245,247,0.88); }

/* ── Logo ── */
.logo-mark {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
    font-size: 11px;
    background: var(--lime);
    color: #08080a;
    padding: 3px 7px;
    border-radius: 5px;
    letter-spacing: 0.04em;
}

/* ── Nav ── */
.nav-link {
    font-size: 13px;
    color: var(--text-2);
    padding: 6px 14px;
    border-radius: 8px;
    transition: background 150ms, color 150ms;
}
.nav-link:hover { color: var(--text); background: rgba(128,128,128,0.1); }

/* ── Search ── */
.search-shell {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 14px;
    transition: border-color 200ms, box-shadow 200ms;
}
.search-shell:focus-within {
    border-color: var(--lime-border);
    box-shadow: 0 0 0 3px rgba(181,255,61,0.04), 0 0 50px rgba(181,255,61,0.03);
}
.search-input {
    background: transparent;
    border: none;
    outline: none;
    width: 100%;
    font-family: inherit;
    font-size: 15px;
    color: var(--text);
}
.search-input::placeholder { color: var(--text-3); }

/* ── KBD ── */
.kbd {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-3);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 5px;
    padding: 2px 6px;
    white-space: nowrap;
}

/* ── Search dropdown ── */
.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0; right: 0;
    background: var(--bg-2);
    border: 1px solid var(--border-hover);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(0,0,0,0.6);
    z-index: 50;
}
.search-result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    transition: background 150ms;
}
.search-result:last-child { border-bottom: none; }
.search-result:hover,
.search-result.active { background: var(--bg-hover); }

/* ── Tool card ── */
.tool-card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-decoration: none;
    display: block;
    transition: background 200ms, border-color 200ms, transform 150ms;
}
.tool-card:hover {
    background: var(--bg-3);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}
.tool-card:hover .card-arrow { opacity: 1; transform: translate(2px,-2px); }
.card-arrow { opacity: 0; transition: opacity 200ms, transform 200ms; color: var(--lime); }

/* ── Category row ── */
.cat-row {
    display: flex;
    align-items: center;
    padding: 22px 0;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    transition: padding-left 200ms;
}
.cat-row:hover { padding-left: 6px; }
.cat-row:hover .cat-name  { color: var(--text); }
.cat-row:hover .cat-count { color: var(--lime); }
.cat-row:hover .cat-arrow { opacity: 1; transform: translate(3px,-3px); color: var(--lime); }
.cat-name  { color: var(--text-2); transition: color 200ms; font-size: 16px; }
.cat-count { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--text-3); transition: color 200ms; }
.cat-arrow { opacity: 0.2; transition: opacity 200ms, transform 200ms, color 200ms; font-size: 18px; }

/* ── Tool index row ── */
.idx-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    text-decoration: none;
    transition: padding-left 150ms;
}
.idx-row:hover { padding-left: 4px; }
.idx-row:hover .idx-name { color: var(--text); }
.idx-num  { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3); min-width: 26px; }
.idx-name { font-size: 14px; color: var(--text-2); transition: color 150ms; }

/* ── Hero glow ── */
.hero-glow {
    position: absolute;
    top: -300px;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 700px;
    background: radial-gradient(ellipse at 50% 40%, rgba(181,255,61,0.055) 0%, transparent 65%);
    pointer-events: none;
}

/* ── Section label ── */
.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-3);
}

/* ── Tags ── */
.pop-tag {
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 99px;
    border: 1px solid var(--border);
    color: var(--text-3);
}

.quick-tag {
    font-size: 12px;
    padding: 5px 12px;
    border-radius: 99px;
    border: 1px solid var(--border);
    color: var(--text-3);
    text-decoration: none;
    transition: border-color 150ms, color 150ms;
}
.quick-tag:hover { border-color: var(--border-hover); color: var(--text-2); }

/* ── Footer ── */
.footer-link {
    font-size: 13px;
    color: var(--text-3);
    text-decoration: none;
    transition: color 150ms;
}
.footer-link:hover { color: var(--text-2); }

/* ── Theme toggle button ── */
.theme-btn {
    width: 34px; height: 34px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: border-color 150ms, color 150ms;
}
.theme-btn:hover { border-color: var(--border-hover); color: var(--text-2); }

/* ── Animations ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.6s cubic-bezier(0.16,1,0.3,1) forwards; opacity: 0; }