:root {
    color-scheme: dark;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #07111f;
    color: #e8eef8;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top right, #123b55 0, transparent 34%), #07111f; }
button, a { font: inherit; }
.app-shell { min-height: 100vh; }
.topbar { display: flex; align-items: center; gap: 14px; padding: 20px clamp(20px, 5vw, 72px); border-bottom: 1px solid #223247; background: rgba(7, 17, 31, .86); backdrop-filter: blur(14px); }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: #f29a3f; color: #07111f; font-weight: 900; }
.brand-title { font-size: 1.05rem; font-weight: 750; }
.site-link { margin-left: auto; color: #9bc8df; text-decoration: none; }
main { width: min(1280px, calc(100% - 40px)); margin: 0 auto; padding: 56px 0 80px; }
.hero { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 28px; }
.eyebrow { margin: 0 0 6px; color: #6ea9c6; font-size: .72rem; font-weight: 800; letter-spacing: .14em; }
h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.8rem); letter-spacing: -.045em; }
.hero-copy { max-width: 650px; color: #9baabd; font-size: 1.05rem; }
.actions { display: flex; gap: 10px; }
.button { min-height: 44px; padding: 0 18px; border: 1px solid transparent; border-radius: 10px; cursor: pointer; font-weight: 750; }
.button:disabled { opacity: .55; cursor: not-allowed; }
.button-primary { background: #f29a3f; color: #081321; }
.button-secondary { border-color: #334a64; background: #102237; color: #dce9f6; }
.action-message { margin-bottom: 20px; padding: 12px 16px; border: 1px solid #31506c; border-radius: 10px; background: #10283d; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.metric-card, .panel { border: 1px solid #22364d; background: rgba(11, 27, 45, .92); box-shadow: 0 18px 45px rgba(0, 0, 0, .16); }
.metric-card { min-height: 150px; padding: 20px; border-radius: 14px; display: flex; flex-direction: column; gap: 10px; }
.metric-card strong { font-size: 1.08rem; }
.metric-label, .metric-detail { color: #8fa1b5; }
.metric-label { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.metric-detail { margin-top: auto; font-size: .88rem; }
.panel { margin-top: 22px; padding: 24px; border-radius: 16px; }
.panel-header { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 20px; }
.panel-header h2 { margin: 0; font-size: 1.45rem; }
.count-badge { padding: 6px 10px; border-radius: 999px; background: #152c43; color: #91b9ce; font-size: .78rem; }
.membership-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.membership-card { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 18px; border: 1px solid #263d55; border-radius: 12px; background: #0d1d30; }
.membership-card h3 { margin: 0 0 10px; font-size: 1rem; }
.status-pill { display: inline-flex; padding: 5px 9px; border-radius: 999px; font-size: .75rem; font-weight: 800; }
.status-full { background: #44222a; color: #ff9fa8; }
.status-available { background: #123d32; color: #75e0b0; }
.history-list { display: grid; gap: 10px; }
.history-entry { display: grid; grid-template-columns: 180px 1fr; gap: 20px; padding: 16px; border-radius: 10px; background: #0d1d30; }
.history-entry time { color: #84a6ba; font-size: .85rem; }
.history-entry p { margin: 0 0 5px; }
.empty-state { padding: 32px; text-align: center; color: #8fa1b5; border: 1px dashed #2a435d; border-radius: 12px; }
.text-positive { color: #72ddb0; }
.text-warning { color: #f3b265; }
.text-negative { color: #ff8995; }

@media (max-width: 900px) {
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .hero { align-items: start; flex-direction: column; }
}

@media (max-width: 620px) {
    main { width: min(100% - 24px, 1280px); padding-top: 34px; }
    .topbar { padding: 16px; }
    .site-link { display: none; }
    .metric-grid, .membership-grid { grid-template-columns: 1fr; }
    .actions { width: 100%; flex-direction: column; }
    .history-entry { grid-template-columns: 1fr; gap: 8px; }
}