/* d — project pages stylesheet (tech dark theme) */

:root {
    --bg: #0d1117;
    --bg-raised: #161b22;
    --bg-sunken: #010409;
    --border: #30363d;
    --text: #c9d1d9;
    --text-strong: #f0f6fc;
    --text-dim: #8b949e;
    --accent: #1f6feb;
    --accent-bright: #58a6ff;
    --green: #7ee787;
    --purple: #9c4edd;
    --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    /* subtle circuit dot grid */
    background-image: radial-gradient(#1c2733 1px, transparent 1px);
    background-size: 28px 28px;
}

a { color: var(--accent-bright); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre, .mono { font-family: var(--mono); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- nav ---------- */

.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.nav .wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 56px;
}

.nav img { width: 28px; height: 28px; border-radius: 6px; }

.nav .brand {
    font-family: var(--mono);
    font-weight: 700;
    color: var(--text-strong);
    font-size: 1.05rem;
}

.nav .spacer { flex: 1; }

.nav a.nav-link {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-left: 20px;
}

.nav a.nav-link:hover { color: var(--text-strong); text-decoration: none; }

/* ---------- hero ---------- */

.hero {
    text-align: center;
    padding: 88px 24px 72px;
    position: relative;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 60% 50% at 50% 30%,
        rgba(31, 111, 235, 0.15),
        transparent 70%
    );
    pointer-events: none;
}

.hero-logo {
    width: 148px;
    height: 148px;
    border-radius: 28px;
    box-shadow:
        0 0 0 1px var(--border),
        0 0 64px rgba(31, 111, 235, 0.35);
    position: relative;
}

.hero h1 {
    font-family: var(--mono);
    font-size: 3rem;
    color: var(--text-strong);
    margin-top: 28px;
    position: relative;
}

.hero h1 .prompt { color: var(--green); }

.hero .tagline {
    font-size: 1.2rem;
    color: var(--text-dim);
    margin-top: 10px;
    position: relative;
}

.badges { margin-top: 22px; position: relative; }

.badges span {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.78rem;
    padding: 4px 12px;
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-dim);
    background: var(--bg-raised);
    margin: 4px;
}

.badges .hl { color: var(--green); border-color: rgba(126, 231, 135, 0.4); }

/* ---------- install box ---------- */

.install {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin-top: 34px;
    padding: 14px 20px;
    background: var(--bg-sunken);
    border: 1px solid var(--border);
    border-radius: 10px;
    font-family: var(--mono);
    font-size: 1rem;
    position: relative;
}

.install .cmd { color: var(--text-strong); }
.install .cmd::before { content: "$ "; color: var(--green); }

.copy-btn {
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-dim);
    font-size: 0.78rem;
    padding: 4px 10px;
    cursor: pointer;
    font-family: var(--mono);
}

.copy-btn:hover { color: var(--text-strong); border-color: var(--text-dim); }
.copy-btn.copied { color: var(--green); border-color: var(--green); }

/* ---------- sections ---------- */

section { padding: 64px 0; }

.section-title {
    font-family: var(--mono);
    font-size: 1.5rem;
    color: var(--text-strong);
    margin-bottom: 8px;
}

.section-title::before {
    content: "// ";
    color: var(--accent-bright);
}

.section-sub { color: var(--text-dim); margin-bottom: 36px; }

/* ---------- feature grid ---------- */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
}

.card {
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 22px;
    transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.card .icon { font-size: 1.5rem; }

.card h3 {
    color: var(--text-strong);
    font-size: 1.02rem;
    margin: 10px 0 6px;
}

.card h3 .tag {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--green);
    border: 1px solid rgba(126, 231, 135, 0.4);
    border-radius: 10px;
    padding: 1px 8px;
    vertical-align: middle;
    margin-left: 8px;
}

.card p { color: var(--text-dim); font-size: 0.92rem; }

/* ---------- terminal ---------- */

.terminal {
    background: var(--bg-sunken);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--bg-raised);
    border-bottom: 1px solid var(--border);
}

.terminal-bar .dot { width: 12px; height: 12px; border-radius: 50%; }
.terminal-bar .dot.r { background: #ff5f57; }
.terminal-bar .dot.y { background: #febc2e; }
.terminal-bar .dot.g { background: #28c840; }

.terminal-bar .title {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--text-dim);
    margin-left: 8px;
}

.terminal pre {
    padding: 20px;
    overflow-x: auto;
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--text);
}

.terminal .p { color: var(--green); }       /* prompt */
.terminal .c { color: var(--text-dim); }     /* comment */
.terminal .o { color: var(--accent-bright); } /* output */

/* ---------- table ---------- */

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    font-size: 0.92rem;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--bg-sunken);
    font-family: var(--mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
}

tr:last-child td { border-bottom: none; }
td code { color: var(--accent-bright); }

/* ---------- roadmap ---------- */

.phase {
    border-left: 3px solid var(--border);
    padding: 4px 0 4px 20px;
    margin-bottom: 28px;
    position: relative;
}

.phase::before {
    content: "";
    position: absolute;
    left: -8px;
    top: 8px;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--border);
}

.phase.done { border-left-color: var(--green); }
.phase.done::before { background: var(--green); box-shadow: 0 0 12px rgba(126, 231, 135, 0.6); }

.phase.active { border-left-color: var(--accent); }
.phase.active::before { background: var(--accent); box-shadow: 0 0 12px rgba(31, 111, 235, 0.6); }

.phase h3 { color: var(--text-strong); font-size: 1.02rem; font-family: var(--mono); }
.phase h3 .status { font-size: 0.75rem; margin-left: 10px; }
.phase.done h3 .status { color: var(--green); }
.phase.active h3 .status { color: var(--accent-bright); }
.phase p { color: var(--text-dim); font-size: 0.9rem; margin-top: 4px; }

/* ---------- footer ---------- */

footer {
    border-top: 1px solid var(--border);
    padding: 32px 0 48px;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.85rem;
}

footer img { width: 36px; height: 36px; border-radius: 8px; opacity: 0.85; }
footer .mono { font-size: 0.8rem; }