/* RegexMate product site */

:root {
    --bg: #FDFDFC;
    --bg-alt: #F4F6F5;
    --surface: #FFFFFF;
    --text: #14201B;
    --text-2: #4A5A53;
    --text-3: #7A8880;
    --border: #E3E8E5;
    --accent: #059669;
    --accent-hover: #047857;
    --accent-soft: rgba(5, 150, 105, 0.10);
    --term-bg: #101613;
    --term-text: #D7E2DC;
    --radius: 14px;
    --font: "Inter", -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0D1210;
        --bg-alt: #111714;
        --surface: #161D19;
        --text: #E6EDE9;
        --text-2: #A9B8B0;
        --text-3: #74837B;
        --border: #233029;
        --accent: #10B981;
        --accent-hover: #34D399;
        --accent-soft: rgba(16, 185, 129, 0.14);
        --term-bg: #0A0F0C;
    }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
/* long unbreakable code lines must never widen the document */
html, body { overflow-x: clip; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 28px; }

code, pre { font-family: var(--mono); font-size: 0.9em; }

/* entrance animation */
.js-anim .section, .js-anim .hero { opacity: 0; transform: translateY(10px); animation: rise 0.55s ease forwards; }
.js-anim .section:nth-child(2) { animation-delay: 0.05s; }
@keyframes rise { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .js-anim .section, .js-anim .hero { opacity: 1; transform: none; animation: none; }
}

/* ---- nav ---- */
.nav {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    max-width: 1080px; margin: 0 auto; padding: 14px 28px;
    display: flex; align-items: center; justify-content: space-between;
}
.brand {
    display: inline-flex; align-items: center; gap: 9px;
    font-weight: 700; font-size: 1.05em; color: var(--text); text-decoration: none;
    letter-spacing: -0.01em;
}
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a {
    color: var(--text-2); text-decoration: none; font-size: 0.92em; font-weight: 500;
    transition: color 0.15s;
}
.nav-links a:hover { color: var(--accent); }
.lang-btn {
    border: 1px solid var(--border); background: var(--surface); color: var(--text-2);
    font-size: 0.85em; padding: 5px 12px; border-radius: 999px; cursor: pointer;
    font-family: var(--font); transition: color 0.15s, border-color 0.15s;
}
.lang-btn:hover { color: var(--accent); border-color: var(--accent); }

@media (max-width: 760px) {
    .nav-links a:not(.nav-github) { display: none; }
    .hero-install { display: flex; width: 100%; }
    .diagram-card figcaption { white-space: normal; word-break: break-all; }
}

/* ---- hero ---- */
.hero { padding: 92px 0 74px; text-align: center; }
.hero-badges { display: flex; gap: 8px; justify-content: center; margin-bottom: 26px; flex-wrap: wrap; }
.badge {
    font-size: 0.8em; font-weight: 600; color: var(--text-2);
    border: 1px solid var(--border); border-radius: 999px; padding: 4px 13px;
    background: var(--surface);
}
.badge-version { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.hero-title {
    font-size: clamp(2.2em, 5.2vw, 3.4em); font-weight: 800; letter-spacing: -0.03em;
    line-height: 1.12; margin-bottom: 20px;
}
.hero-sub {
    max-width: 640px; margin: 0 auto 30px; color: var(--text-2); font-size: 1.06em;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; margin-bottom: 30px; flex-wrap: wrap; }
.btn {
    display: inline-block; padding: 11px 24px; border-radius: 10px;
    font-weight: 600; font-size: 0.95em; text-decoration: none;
    transition: transform 0.15s, background 0.15s, border-color 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.hero-install {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--term-bg); border-radius: 10px; padding: 11px 16px;
    max-width: 100%;
}
.hero-install code { color: var(--term-text); font-size: 0.86em; overflow-x: auto; white-space: nowrap; max-width: 100%; display: block; }
.copy-btn {
    border: none; background: transparent; color: var(--text-3); cursor: pointer;
    font-size: 1em; line-height: 1; padding: 2px;
}
.copy-btn:hover { color: #fff; }

/* ---- sections ---- */
.section { padding: 74px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
    font-size: 1.7em; font-weight: 700; letter-spacing: -0.02em; text-align: center;
    margin-bottom: 14px;
}
.section-sub { text-align: center; color: var(--text-2); margin-bottom: 40px; }
.section-sub code {
    background: var(--accent-soft); color: var(--accent);
    padding: 1px 6px; border-radius: 6px;
}

/* ---- cards ---- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 26px 24px;
    min-width: 0; /* grid items must be allowed to shrink below long code lines */
}
.card h3 { font-size: 1.06em; font-weight: 700; margin: 14px 0 8px; }
.card p { color: var(--text-2); font-size: 0.93em; }
.card-icon {
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--accent-soft); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
}
@media (max-width: 860px) { .cards { grid-template-columns: 1fr; } }

/* ---- terminal ---- */
.terminal {
    background: var(--term-bg); border-radius: var(--radius);
    border: 1px solid var(--border); overflow: hidden;
    box-shadow: 0 14px 40px -18px rgba(0, 0, 0, 0.35);
}
.terminal-bar {
    display: flex; align-items: center; gap: 7px;
    padding: 11px 16px; background: rgba(255, 255, 255, 0.04);
}
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-r { background: #F87171; } .dot-y { background: #FBBF24; } .dot-g { background: #34D399; }
.terminal-title { margin-left: 8px; color: #74837B; font-size: 0.8em; font-family: var(--mono); }
.terminal-body {
    padding: 22px 24px; overflow-x: auto;
    color: var(--term-text); font-size: 0.86em; line-height: 1.7;
}
.c-dim { color: #74837B; }
.c-str { color: #A7F3D0; }

/* ---- diagrams ---- */
.diagram-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 860px) { .diagram-grid { grid-template-columns: 1fr; } }
.diagram-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 22px 16px; text-align: center;
}
.diagram-card img { max-width: 100%; height: auto; }
.diagram-card figcaption {
    margin-top: 14px; font-size: 0.82em; color: var(--text-2);
    border-top: 1px dashed var(--border); padding-top: 12px;
    overflow-x: auto; white-space: nowrap;
}
.diagram-card figcaption code { color: var(--accent); }

/* ---- agents ---- */
.agent-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.agent-col { min-width: 0; }
@media (max-width: 860px) { .agent-grid { grid-template-columns: 1fr; } }
.agent-col h3 { font-size: 1.02em; font-weight: 700; margin-bottom: 14px; }
.agent-col h3.mt { margin-top: 26px; }
.code-block {
    background: var(--term-bg); color: var(--term-text);
    border-radius: 10px; padding: 16px 18px; overflow-x: auto;
    font-size: 0.8em; line-height: 1.7; margin-bottom: 12px;
}
.c-key { color: #8BD8BC; }
.c-lit { color: #FBBF24; }
.c-num { color: #FBBF24; }
.agent-note { color: var(--text-3); font-size: 0.85em; }
.exit-table { width: 100%; border-collapse: collapse; margin-bottom: 6px; }
.exit-table td { padding: 9px 10px; border-bottom: 1px solid var(--border); font-size: 0.9em; color: var(--text-2); vertical-align: top; }
.exit-table td:first-child { width: 52px; }
.exit-table code {
    background: var(--accent-soft); color: var(--accent); font-weight: 600;
    padding: 2px 8px; border-radius: 6px;
}
.c-dim { color: #74837B; }

/* ---- install ---- */
.install-card { display: flex; flex-direction: column; }
.install-card .btn { align-self: flex-start; margin-top: auto; }
.install-card .code-block { margin-top: 12px; font-size: 0.78em; }

/* ---- roadmap ---- */
.roadmap { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.roadmap-item {
    display: flex; align-items: baseline; gap: 14px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 12px; padding: 15px 20px; font-size: 0.95em; color: var(--text-2);
}
.roadmap-tag {
    flex-shrink: 0; font-size: 0.72em; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.06em; color: var(--accent); background: var(--accent-soft);
    padding: 3px 10px; border-radius: 999px;
}
.roadmap-tag-later { color: var(--text-3); background: var(--bg-alt); }

/* ---- footer ---- */
.footer { border-top: 1px solid var(--border); padding: 40px 0 34px; background: var(--bg-alt); }
.footer-inner {
    display: flex; align-items: flex-start; justify-content: space-between;
    gap: 24px; flex-wrap: wrap;
}
.brand-footer { font-size: 0.95em; }
.footer-note { color: var(--text-3); font-size: 0.85em; margin-top: 6px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-2); text-decoration: none; font-size: 0.9em; }
.footer-links a:hover { color: var(--accent); }
.footer-copy { color: var(--text-3); font-size: 0.82em; }