/* =========================================================================
   Seidr Labs — site stylesheet
   Brand colors:
     bg/midnight   #0a0e27
     panel         #161b3a
     ink (text)    #e8e9f3
     muted         #8e9098
     gold          #c9a961   (accent, headings)
     aurora        #5fdde5   (highlights, links)
     crimson       #d93849   (errors, status)
   ========================================================================= */

:root {
    --bg:           #0a0e27;
    --bg-deep:      #060920;
    --panel:        #161b3a;
    --panel-hi:     #1f2549;
    --ink:          #e8e9f3;
    --muted:        #8e9098;
    --gold:         #c9a961;
    --gold-dim:     #9a7e3e;
    --aurora:       #5fdde5;
    --crimson:      #d93849;
    --border:       #2a3160;

    --shadow-1:     0 1px 2px rgba(0,0,0,.4);
    --shadow-2:     0 8px 24px rgba(0,0,0,.6);
    --shadow-glow:  0 0 32px rgba(95, 221, 229, 0.18);

    --radius-sm:    6px;
    --radius:       10px;
    --radius-lg:    16px;

    --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-serif:   'Crimson Pro', 'Iowan Old Style', 'Palatino Linotype', Palatino, serif;
    --font-mono:    'JetBrains Mono', ui-monospace, 'Cascadia Mono', 'SF Mono', Menlo, Consolas, monospace;

    --max-w:        1180px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    min-height: 100%;
}

body {
    background:
        radial-gradient(ellipse 800px 400px at 50% -10%, rgba(95, 221, 229, 0.08), transparent 60%),
        radial-gradient(ellipse 600px 400px at 90% 20%, rgba(201, 169, 97, 0.06), transparent 60%),
        var(--bg);
}

/* ---------- typography ---------- */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    color: var(--gold);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin: 0 0 0.5em;
}
h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 2.5vw, 2.2rem); }
h3 { font-size: 1.3rem; color: var(--ink); }
h4 { font-size: 1.05rem; color: var(--ink); text-transform: uppercase; letter-spacing: 0.08em; }

p { margin: 0 0 1em; color: var(--ink); }
p.lead { font-size: 1.15rem; color: var(--ink); }
.muted { color: var(--muted); }

a {
    color: var(--aurora);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color .15s, color .15s;
}
a:hover { border-bottom-color: var(--aurora); }
a:focus-visible {
    outline: 2px solid var(--aurora);
    outline-offset: 2px;
    border-radius: 2px;
}

code, pre { font-family: var(--font-mono); font-size: 0.92em; }
code {
    background: var(--panel);
    padding: 0.12em 0.42em;
    border-radius: var(--radius-sm);
    color: var(--gold);
}
pre {
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.2rem;
    overflow-x: auto;
}
pre code { background: none; padding: 0; color: var(--ink); }

/* ---------- layout ---------- */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 5rem 0;
}
section.tight { padding: 3rem 0; }

/* ---------- header / nav ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: saturate(160%) blur(12px);
    -webkit-backdrop-filter: saturate(160%) blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 1.5rem;
    max-width: var(--max-w);
    margin: 0 auto;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--ink);
    border: none;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: 0.02em;
}
.brand:hover { border: none; }
.brand img { width: 36px; height: 36px; }
.brand span { color: var(--gold); }
.brand small {
    color: var(--muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-family: var(--font-sans);
    margin-left: 0.2rem;
}

.nav-links {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    flex-wrap: wrap;
}
.nav-links a {
    color: var(--ink);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    border: none;
    font-size: 0.95rem;
    transition: background .15s, color .15s;
}
.nav-links a:hover {
    background: var(--panel);
    color: var(--gold);
    border: none;
}
.nav-links a.is-active {
    color: var(--gold);
    background: var(--panel);
}

/* ---------- hero ---------- */
.hero {
    padding: 7rem 0 5rem;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: -10% -10% auto -10%;
    height: 70%;
    background: radial-gradient(circle at 30% 30%, rgba(95,221,229,.1), transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(201,169,97,.08), transparent 50%);
    pointer-events: none;
    z-index: 0;
}
.hero .container { position: relative; z-index: 1; }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.78rem;
    margin-bottom: 1rem;
    font-weight: 500;
}
.eyebrow::before {
    content: "ᛡ";
    color: var(--aurora);
    font-size: 1.1em;
}

.hero h1 {
    max-width: 22ch;
    margin-bottom: 1rem;
}
.hero h1 .accent {
    color: var(--aurora);
    font-style: italic;
}

.hero .lead {
    max-width: 56ch;
    color: var(--ink);
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.3rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
    color: var(--ink);
    font: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: transform .12s, background .15s, border-color .15s;
}
.btn:hover {
    background: var(--panel-hi);
    border-color: var(--gold-dim);
    border-bottom-color: var(--gold-dim);
    transform: translateY(-1px);
}
.btn-primary {
    background: var(--gold);
    color: var(--bg);
    border-color: var(--gold);
    font-weight: 600;
}
.btn-primary:hover {
    background: #d9b974;
    border-color: #d9b974;
    color: var(--bg);
}
.btn-ghost { background: transparent; }

/* ---------- featured grid ---------- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform .15s, border-color .15s, box-shadow .2s;
    position: relative;
    overflow: hidden;
}
.card:hover {
    transform: translateY(-2px);
    border-color: var(--gold-dim);
    box-shadow: var(--shadow-2);
}
.card .tag {
    display: inline-block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--aurora);
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 99px;
    margin-bottom: 0.8rem;
}
.card .tag.gold { color: var(--gold); border-color: var(--gold-dim); }
.card .tag.live { color: #6ee7b7; border-color: #2e6e54; }
.card .tag.beta { color: #f8c560; border-color: #6d5520; }
.card .tag.archived { color: var(--muted); }
.card h3 a { color: var(--ink); border: none; }
.card h3 a:hover { color: var(--gold); border: none; }
.card .row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--muted);
}
.card .row .stat {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

/* ---------- section heading ---------- */
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}
.section-head h2 { margin: 0; }
.section-head a { font-size: 0.95rem; }

/* ---------- list / definition ---------- */
.kv {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 0.5rem 1.25rem;
    margin: 1rem 0;
}
.kv dt {
    color: var(--muted);
    text-transform: uppercase;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    padding-top: 2px;
}
.kv dd { margin: 0; color: var(--ink); }

/* ---------- about / portrait ---------- */
.split {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: start;
}
@media (max-width: 800px) {
    .split { grid-template-columns: 1fr; }
}

.portrait {
    background: linear-gradient(160deg, var(--panel), var(--bg-deep));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
}
.portrait .avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--panel-hi), var(--bg-deep));
    border: 2px solid var(--gold-dim);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--gold);
}

/* ---------- download list ---------- */
.dl-list { display: grid; gap: 1rem; }
.dl-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1rem;
    align-items: center;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.2rem 1.5rem;
}
.dl-item h3 { margin: 0 0 0.25rem; }
.dl-item .meta {
    color: var(--muted);
    font-size: 0.88rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 0.4rem;
}
.dl-item .meta span { display: inline-flex; align-items: center; gap: 0.3rem; }

/* ---------- footer ---------- */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 2.5rem 0 2rem;
    margin-top: 4rem;
    color: var(--muted);
    font-size: 0.9rem;
}
.site-footer .container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
}
.site-footer .footer-row-1 {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 1.2rem;
    padding-bottom: 1.2rem;
    border-bottom: 1px solid var(--border);
}
.site-footer .footer-row-2 {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}
.site-footer a { color: var(--muted); border: none; }
.site-footer a:hover { color: var(--ink); border: none; }
.site-footer .runic {
    color: var(--gold-dim);
    letter-spacing: 0.3em;
    font-size: 0.9rem;
}

/* social icon row */
.social-row {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    align-items: center;
}
.social-row a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted);
    transition: color .15s, border-color .15s, background .15s;
}
.social-row a:hover {
    color: var(--gold);
    border-color: var(--gold-dim);
    background: var(--panel);
}
.social-row svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}
.social-row .social-label {
    font-size: 0.78rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-right: 0.4rem;
}

/* network grid on home page */
.network-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.network-card {
    display: flex !important;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--ink);
}
.network-card:hover {
    border: 1px solid var(--gold-dim);
    border-bottom: 1px solid var(--gold-dim);
}
.network-card .net-icon {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    color: var(--gold);
    background: var(--bg-deep);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.network-card .net-icon svg { width: 20px; height: 20px; fill: currentColor; }
.network-card .net-body { display: flex; flex-direction: column; gap: 0.1rem; }
.network-card .net-body strong { color: var(--ink); }
.network-card .net-body span { color: var(--muted); font-size: 0.85rem; }

/* project external link strip on projects.html cards */
.find-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}
.find-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 99px;
    color: var(--ink);
    font-size: 0.85rem;
    text-decoration: none;
    transition: border-color .15s, background .15s;
}
.find-links a:hover {
    border-color: var(--gold-dim);
    background: var(--panel-hi);
}
.find-links svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
    color: var(--gold);
}

/* ---------- error pages ---------- */
.error-wrap {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.error-wrap .rune {
    font-size: 6rem;
    color: var(--gold);
    line-height: 1;
    margin-bottom: 1rem;
}

/* ---------- utility ---------- */
.center { text-align: center; }
.spacer-sm { height: 1rem; }
.spacer    { height: 2.5rem; }
.spacer-lg { height: 4rem; }
.divider {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 3rem 0;
}

/* mobile tweaks */
@media (max-width: 640px) {
    .nav { padding: 0.7rem 1rem; }
    .brand small { display: none; }
    .nav-links a { padding: 0.35rem 0.6rem; font-size: 0.9rem; }
    .hero { padding: 4rem 0 3rem; }
    section { padding: 3.5rem 0; }
    .kv { grid-template-columns: 1fr; gap: 0.1rem; }
}