/* =========================================================
   BASE
   ========================================================= */
* { box-sizing: border-box; }
html, body { height: 100%; }
html { color-scheme: light dark; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
    line-height: 1.7;
    color: #0e1525;
    background: #0b1220;
}

:focus-visible { outline: 3px solid #7cc4ff; outline-offset: 2px; }

.container { max-width: 1100px; margin-inline: auto; padding: 0 1rem; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
    flex: 0 0 auto;
    text-align: center;
    background: linear-gradient(180deg, rgba(11,18,32,0.9), rgba(11,18,32,0.5));
    backdrop-filter: saturate(120%) blur(6px);
    border-bottom: 1px solid rgba(255,255,255,0.12);
    padding: 0.75rem 0;
}

.site-title {
    margin: 0;
    padding: 0.25rem 0;
    color: #f5f7ff;
    font-weight: 700;
    letter-spacing: 1px;
    font-size: 1.5rem;
    text-transform: uppercase;
}

/* =========================================================
   PAGES
   ========================================================= */
.page {
    flex: 1 1 auto;
    background: #0b1220;
}

.page .container {
    max-width: 820px;
    padding: 2.5rem 1.5rem 3.5rem;
}

/* Headings */
.page h1,
.page h2,
.page h3 {
    color: #f5f7ff;
    margin: 0 0 1rem;
    line-height: 1.3;
}
.page h1 { font-size: clamp(1.6rem, 1.2rem + 2vw, 2.4rem); font-weight: 800; letter-spacing: .5px; }
.page h2 { font-size: clamp(1.3rem, 1rem + 1.2vw, 1.8rem); margin-top: 2rem; font-weight: 700; }
.page h3 { font-size: 1.2rem; margin-top: 1.5rem; font-weight: 700; }

/* Text */
.page p,
.page li {
    color: #cfd9ff;
    font-size: 1.15rem;
}
.page p { margin: 0 0 1.25rem; }
.page .lead {
    color: #e6ebff;
    font-size: 1.25rem;
    opacity: .95;
}

/* Links */
.page a {
    color: #bcd2ff;
    text-decoration: underline dotted rgba(188,210,255,.6);
    text-underline-offset: 2px;
}
.page a:hover { text-decoration-style: solid; }

/* Lists & rules */
.page ul, .page ol { padding-left: 1.5rem; margin: .25rem 0 1.25rem; }
.page hr {
    border: 0;
    border-top: 1px solid rgba(255,255,255,.12);
    margin: 2.25rem 0;
}

/* Card sections */
.page .card {
    background: rgba(15,17,27,.55);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 16px;
    backdrop-filter: blur(8px) saturate(120%);
    box-shadow: 0 8px 24px rgba(0,0,0,.35);
    padding: 1.5rem 1.5rem;
    margin: 1.25rem 0 1.5rem;
}

/* Muted text */
.page .muted { color: #aebcf7; opacity: .9; font-size: 1rem; }

.page code, .page kbd {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 1em;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: .35rem;
    padding: .1rem .3rem;
}
.page pre {
    background: rgba(0,0,0,.35);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 10px;
    padding: 1.25rem;
    overflow-x: auto;
    color: #e8eeff;
}

/* Page header divider */
.page .page-header {
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255,255,255,.12);
    color: #dfe7ff;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
    flex: 0 0 auto;
    background: #0a1020;
    color: #e8eeff;
    border-top: 1px solid rgba(255,255,255,0.12);
    padding: 0.75rem 0;
    font-size: 1rem;
}

.site-footer .container {
    min-height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.site-footer p {
    margin: 0;
    color: #e8eeff;
}

.site-footer a {
    color: #bcd2ff;
    text-decoration: none;
}
.site-footer a:hover { text-decoration: underline; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 600px) {
    .site-title { font-size: 1.2rem; }
}