:root {
    --crimson: #8b1528;
    --crimson-deep: #5c0c1a;
    --crimson-ink: #3a0811;
    --crimson-soft: #a52a3d;
    --silver: #c5ccd4;
    --silver-bright: #e8eef4;
    --silver-metal: linear-gradient(145deg, #f4f7fa 0%, #c7ced6 42%, #9aa3ad 78%, #dde3ea 100%);
    --bg: #f3f1f2;
    --bg-wash: #ebe6e8;
    --ink: #1a1214;
    --muted: #5c5054;
    --card: #fffcfd;
    --line: #d9d0d3;
    --ok: #1f6b3a;
    --danger: #8b1528;
    --shadow: 0 12px 28px rgba(58, 8, 17, 0.12);
    --radius: 18px;
    --font: "Manrope", "Segoe UI", sans-serif;
    --display: "Libre Baskerville", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font);
    color: var(--ink);
    background:
        radial-gradient(900px 420px at 8% -8%, rgba(165, 42, 61, 0.12), transparent 55%),
        radial-gradient(700px 380px at 100% 0%, rgba(197, 204, 212, 0.35), transparent 50%),
        linear-gradient(180deg, #f7f4f5 0%, var(--bg) 45%, var(--bg-wash) 100%);
    min-height: 100vh;
    line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: var(--crimson); }
code {
    font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
    letter-spacing: 0.08em;
}

.wrap { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.shell { width: min(720px, calc(100% - 2rem)); margin: 1.5rem auto 3rem; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: linear-gradient(180deg, var(--crimson-deep) 0%, var(--crimson) 100%);
    border-bottom: 1px solid rgba(232, 238, 244, 0.18);
    box-shadow: 0 8px 24px rgba(58, 8, 17, 0.28);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4.4rem;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--silver-bright);
    text-decoration: none;
    min-width: 0;
}
.brand img,
.brand-logo {
    width: 52px;
    height: 52px;
    object-fit: contain;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, #9a1c30, var(--crimson-ink));
    box-shadow: 0 4px 12px rgba(0,0,0,.25), inset 0 0 0 1px rgba(232,238,244,.25);
    flex-shrink: 0;
}
.brand-text { display: grid; gap: 0.1rem; }
.brand strong,
.brand-name {
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.05rem, 2.2vw, 1.35rem);
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: #fff;
    display: block;
}
.brand em,
.brand-tag {
    font-style: normal;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--silver);
    font-weight: 600;
}

.site-footer {
    background:
        radial-gradient(80% 120% at 50% 0%, rgba(139, 21, 40, 0.35), transparent 60%),
        linear-gradient(180deg, var(--crimson) 0%, var(--crimson-ink) 100%);
    color: var(--silver-bright);
    padding: 2rem 0 2.25rem;
    margin-top: 1rem;
    text-align: center;
}
.site-footer p { margin: 0.35rem 0; }
.site-footer strong {
    font-family: var(--display);
    font-size: 1.15rem;
    color: #fff;
}
.site-footer .muted { color: rgba(232, 238, 244, 0.78); }

.hero-card, .panel, .form-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.2rem 1.25rem;
    box-shadow: var(--shadow);
}
.hero-card {
    padding: 1.5rem 1.5rem 1.6rem;
    background:
        radial-gradient(120% 100% at 100% 0%, rgba(197, 204, 212, 0.18), transparent 45%),
        linear-gradient(145deg, var(--crimson-deep) 0%, var(--crimson) 55%, #6e101f 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.hero-card::after {
    content: "";
    position: absolute;
    width: 180px;
    height: 180px;
    right: -40px;
    top: -50px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(232,238,244,.2), transparent 70%);
    pointer-events: none;
}
.hero-card > * { position: relative; z-index: 1; }
.hero-card.slim { width: min(440px, 100%); margin-inline: auto; }
.hero-card.center { text-align: center; }
.hero-card h1, .hero-card h2 { color: #fff; }
.hero-card .lede { color: rgba(232, 238, 244, 0.9); }
.hero-card label { color: var(--silver-bright); }
.hero-card input, .hero-card select, .hero-card textarea {
    background: #fff;
    color: var(--ink);
    border-color: transparent;
    box-shadow: inset 0 0 0 1px rgba(232,238,244,.25);
}
.hero-card small { color: rgba(232,238,244,.8); }

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem;
    color: var(--crimson-soft);
    font-weight: 700;
    margin: 0 0 0.4rem;
}
.hero-card .eyebrow { color: var(--silver); }
h1, h2, h3 {
    font-family: var(--display);
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--crimson-ink);
    margin: 0 0 0.5rem;
}
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h2 { font-size: 1.35rem; }
.lede { font-size: 1.05rem; color: var(--muted); max-width: 42rem; margin: 0 0 1.2rem; }

.stack-form { display: grid; gap: 0.85rem; }
.stack-form label, .filter-bar label, .session-switch label {
    display: grid;
    gap: 0.35rem;
    font-weight: 600;
    font-size: 0.95rem;
}
input, select, textarea {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 12px;
    padding: 0.7rem 0.85rem;
    font: inherit;
    color: var(--ink);
}
input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--crimson-soft);
    border-color: var(--crimson);
}
.code-input {
    font-family: ui-monospace, Consolas, monospace;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    font-size: 1.2rem;
    text-align: center;
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
small { color: var(--muted); font-weight: 500; }

.btn {
    appearance: none;
    border: 0;
    cursor: pointer;
    background: var(--silver-metal);
    color: var(--crimson-ink);
    font-weight: 700;
    font-family: inherit;
    border-radius: 999px;
    padding: 0.7rem 1.2rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 0 rgba(90, 98, 108, 0.35), 0 8px 18px rgba(58, 8, 17, 0.18);
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-primary { }
.btn-ghost {
    background: transparent;
    color: var(--crimson);
    border: 1px solid var(--crimson);
    box-shadow: none;
}
.hero-card .btn-ghost { color: #fff; border-color: rgba(255,255,255,.55); }
.btn-block { width: 100%; }
.btn-row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }

.flash { padding: 0.75rem 1rem; border-radius: 10px; font-weight: 600; margin-bottom: 1rem; }
.flash p { margin: 0.2rem 0; }
.flash-error { background: #f8e4e7; color: var(--danger); }
.flash-success { background: #e2f3e8; color: var(--ok); }

.notice {
    text-align: left;
    background: rgba(0,0,0,.18);
    border-radius: 16px;
    padding: 1rem 1.1rem;
    margin: 1.2rem 0;
}
.notice h2 { font-size: 1.15rem; color: #fff; }

.portal {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}
.sidebar {
    padding: 1.1rem 1rem 1rem;
    background: linear-gradient(180deg, var(--crimson-deep) 0%, var(--crimson) 100%);
    color: var(--silver-bright);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.brand-compact img { width: 48px; height: 48px; }
.brand-compact strong { font-size: 1.05rem; }
.session-chip {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(232,238,244,.2);
    border-radius: 14px;
    padding: 0.7rem 0.8rem;
}
.session-chip span { display: block; font-weight: 700; color: #fff; }
.session-chip small { color: var(--silver); }
.sidebar nav { display: grid; gap: 0.2rem; }
.sidebar nav a {
    text-decoration: none;
    color: var(--silver-bright);
    padding: 0.45rem 0.7rem;
    border-radius: 10px;
    font-weight: 600;
}
.sidebar nav a.is-active,
.sidebar nav a:hover { background: rgba(255,255,255,.12); color: #fff; }
.nav-label {
    margin: 1rem 0 0.2rem;
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--silver);
}
.sidebar-foot { margin-top: auto; color: var(--silver); font-size: 0.85rem; }
.sidebar .linkish { color: var(--silver-bright); }
.linkish {
    background: none;
    border: 0;
    color: var(--crimson);
    cursor: pointer;
    padding: 0;
    font: inherit;
    text-decoration: underline;
}
.linkish.danger { color: var(--danger); }

.portal-main { padding: 1.4rem 1.6rem 3rem; display: grid; gap: 1.1rem; }
.portal-top {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: end;
    flex-wrap: wrap;
}
.portal-top h1 { margin: 0; }
.session-switch select { width: auto; min-width: 240px; }

.grid-2 { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 1.1rem; }
.panel-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: start;
    flex-wrap: wrap;
    margin-bottom: 0.8rem;
}
.muted { color: var(--muted); }
.stats, .stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.75rem; }
.stat {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: var(--shadow);
}
.stat span, .stat-num {
    display: block;
    font-family: var(--display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--crimson);
}
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; background: var(--card); }
th, td { text-align: left; padding: 0.7rem 0.8rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #f0e6e9; font-size: 0.85rem; color: var(--crimson-ink); }
.pill {
    display: inline-block;
    border-radius: 999px;
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: #efe6e8;
}
.pill-registered { background: #efe4d4; color: #8a4b12; }
.pill-activated { background: #d8f0e1; color: var(--ok); }
.pill-used { background: #e5e5e5; color: #555; }
.filter-bar { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 1rem; }
.filter-bar input, .filter-bar select { width: auto; min-width: 180px; }
.plain-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.55rem; }
.check { display: flex; align-items: center; gap: 0.6rem; }
.check input { width: auto; }
.scanner { margin-top: 1rem; border-radius: 16px; overflow: hidden; }
.winner-grid {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 0.8rem;
}
.winner-grid li {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 0.9rem;
    display: grid;
    gap: 0.15rem;
    box-shadow: var(--shadow);
}
.winner-grid em { color: var(--muted); font-style: normal; font-size: 0.75rem; font-weight: 700; }
.winner-grid strong { font-size: 1.05rem; color: var(--crimson-ink); }
.code-block {
    background: var(--crimson-ink);
    border-radius: 12px;
    padding: 1rem;
    overflow-x: auto;
    color: var(--silver-bright);
}

@media (max-width: 900px) {
    .portal { grid-template-columns: 1fr; }
    .grid-2, .split { grid-template-columns: 1fr; }
}