/* ===== Base (dark) ===== */
:root {
    --bg: #0b0d10;
    --bg-soft: #11151b;
    --fg: #e6edf3;
    --muted: #98a1ab;
    --accent: #6ae3ff;
    --accent-2: #9dffb0;
    --card: #131922;
    --border: #1f2630;
    --shadow: 0 10px 30px rgba(0,0,0,.35);
    --radius: 14px;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

/* ===== Explicit themes override everything ===== */
[data-theme="dark"] {
    --bg: #0b0d10;
    --bg-soft: #11151b;
    --fg: #e6edf3;
    --muted: #98a1ab;
    --accent: #6ae3ff;
    --accent-2: #9dffb0;
    --card: #131922;
    --border: #1f2630;
    --shadow: 0 10px 30px rgba(0,0,0,.35);
}
[data-theme="light"] {
    --bg: #f7f9fc;
    --bg-soft: #ffffff;
    --fg: #0b1220;
    --muted: #475569;
    --accent: #0066ff;
    --accent-2: #00b36b;
    --card: #ffffff;
    --border: #e6eaf0;
    --shadow: 0 10px 30px rgba(2,22,50,.06);
}

/* ===== System preference applies ONLY when no explicit theme is set ===== */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        --bg: #f7f9fc;
        --bg-soft: #ffffff;
        --fg: #0b1220;
        --muted: #475569;
        --accent: #0066ff;
        --accent-2: #00b36b;
        --card: #ffffff;
        --border: #e6eaf0;
        --shadow: 0 10px 30px rgba(2,22,50,.06);
    }
}

html, body { height: 100%; }
body {
    margin: 0;
    font-family: var(--sans);
    background: radial-gradient(1000px 600px at 20% -10%, rgba(106,227,255,.07), transparent 60%),
    radial-gradient(800px 500px at 120% 10%, rgba(157,255,176,.06), transparent 60%),
    var(--bg);
    color: var(--fg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color .2s ease, color .2s ease;
}

.wrap { max-width: 1100px; padding: 28px clamp(16px, 4vw, 28px); margin: 0 auto; }

/* Header */
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 0 18px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--fg); }
.logo {
    width: 38px; height: 38px; display: grid; place-items: center;
    border-radius: 10px; background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: var(--shadow); font-size: 20px;
}
.title { font-weight: 800; letter-spacing: .2px; font-size: 1.15rem; }

.actions { display: flex; gap: 10px; align-items: center; }
.btn, button, .chip {
    appearance: none; border: 1px solid var(--border);
    background: var(--bg-soft); color: var(--fg);
    border-radius: 999px; padding: 10px 14px; font: inherit; cursor: pointer; text-decoration: none;
    transition: transform .06s ease, background .2s ease, border-color .2s ease;
}
.btn:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: linear-gradient(180deg, rgba(255,255,255,.06), transparent), var(--card); }
.btn.accent {
    background: linear-gradient(135deg, color-mix(in oklab, var(--accent) 70%, transparent), color-mix(in oklab, var(--accent-2) 70%, transparent));
    border-color: transparent; color: #001018;
}

/* Hero */
.hero { display: grid; gap: 18px; }
.tagline { font-size: clamp(1.6rem, 4vw, 2.6rem); font-weight: 900; line-height: 1.1; letter-spacing: -0.02em; }
.subtle { color: var(--muted); max-width: 62ch; }

.panel {
    background: linear-gradient(180deg, rgba(255,255,255,.02), transparent), var(--card);
    border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: clamp(16px, 3vw, 22px);
    margin: 26px 0 10px;
}

/* Projects grid */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-top: 10px; }
.card {
    border: 1px solid var(--border); background: var(--bg-soft);
    border-radius: 12px; padding: 14px; display: grid; gap: 8px;
    transition: transform .08s ease, border-color .2s ease, background .2s ease;
}
.card:hover {
    transform: translateY(-2px);
    border-color: color-mix(in oklab, var(--accent) 50%, var(--border));
    background: linear-gradient(180deg, rgba(255,255,255,.04), transparent), var(--bg-soft);
}
.card h3 { margin: 0; font-size: 1.05rem; line-height: 1.2; }
.meta { display: flex; gap: 8px; align-items: center; color: var(--muted); font-family: var(--mono); font-size: .92rem; }
.pill { border-radius: 999px; border: 1px dashed var(--border); padding: 4px 8px; font-size: .78rem; color: var(--muted); background: transparent; }

/* Footer */
footer { margin: 40px 0 12px; color: var(--muted); font-size: .95rem; display: grid; gap: 8px; }
.links { display: flex; gap: 10px; flex-wrap: wrap; }
.links a { color: inherit; text-decoration: none; border-bottom: 1px dashed var(--border); padding-bottom: 2px; }
.kbd { font-family: var(--mono); font-size: .9em; background: var(--bg-soft); border: 1px solid var(--border); border-bottom-width: 2px; padding: 0 .4em; border-radius: 6px; }

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}