:root {
    --primary: #002837;
    --accent: #e5d043;
    --background: #f7f9fb;
    --surface: #ffffff;
    --border: #d7e1e8;
    --text: #102027;
    --muted: #5f6f77;
    --success: #2f9d63;
    --warning: #f0a23a;
    --danger: #d94b4b;
    --info: #2e6ddf;
    --radius: 18px;
    --shadow: 0 12px 30px rgba(0, 40, 55, 0.08);
    --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: var(--font);
    color: var(--text);
    background: var(--background);
}
a { color: var(--primary); text-decoration: none; }
p { color: var(--muted); line-height: 1.6; }
h1, h2, h3 { margin: 0 0 0.6rem; color: var(--primary); }
code {
    display: inline-block;
    padding: 0.35rem 0.5rem;
    background: #edf3f6;
    border-radius: 8px;
    overflow-wrap: anywhere;
}

.app-shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar {
    background: var(--primary);
    color: #fff;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1.5rem;
}
.brand { color: #fff; font-size: 1.4rem; font-weight: 700; }
.brand-subtitle { color: rgba(255, 255, 255, 0.7); }
.nav { display: grid; gap: 0.4rem; }
.nav a {
    color: #fff;
    padding: 0.8rem 1rem;
    border-radius: 12px;
}
.nav a:hover { background: rgba(255, 255, 255, 0.08); }
.main-shell { padding: 2rem; }
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.user-chip {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.8rem 1rem;
}
.guest-shell { min-height: 100vh; background: linear-gradient(180deg, #f7f9fb, #eef4f7); }
.guest-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.4rem 6vw;
    background: var(--primary);
}
.guest-nav { display: flex; gap: 1rem; }
.guest-nav a { color: #fff; }
.guest-main { padding: 3rem 6vw 5rem; }
.hero {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr;
    gap: 1.5rem;
    align-items: stretch;
    margin-bottom: 2rem;
}
.hero-copy, .hero-panel, .card, .auth-card, .scan-feedback {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.hero-copy, .hero-panel, .card, .auth-card { padding: 1.5rem; }
.hero-panel {
    background: linear-gradient(180deg, #002837, #113d4d);
    color: #fff;
}
.hero-panel p { color: rgba(255, 255, 255, 0.82); }
.eyebrow {
    display: inline-block;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: #7e8f98;
    margin-bottom: 0.7rem;
}
.grid { display: grid; gap: 1.5rem; }
.cards-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.metrics-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin-bottom: 1.5rem; }
.metric-card strong { display: block; font-size: 1.7rem; margin-top: 0.4rem; }
.checkout-grid { grid-template-columns: 1fr 1fr; }
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
    padding: 0.9rem 0.75rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
}
th { color: var(--muted); font-weight: 600; }
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.2rem;
    background: var(--primary);
    color: #fff;
    border: 0;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
}
.button-secondary {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--primary);
}
.button-small { padding: 0.6rem 0.9rem; font-size: 0.95rem; }
.button-block { width: 100%; }
.stack { display: grid; gap: 1rem; }
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}
.field { display: grid; gap: 0.45rem; }
.field span { font-weight: 600; color: var(--primary); }
input, select, textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.9rem 1rem;
    background: #fff;
    font: inherit;
}
.checkbox {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text);
}
.checkbox input { width: auto; }
.full { grid-column: 1 / -1; }
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    background: #eef4f7;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
}
.alert {
    margin-bottom: 1rem;
    padding: 1rem 1.1rem;
    border-radius: 14px;
}
.alert-success { background: #e9f7ef; color: #176a3f; }
.alert-danger { background: #fdeeee; color: #8a1f1f; }
.list-item {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}
.list-item:last-child { border-bottom: 0; }
.ticket-select {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 14px;
}
.auth-card {
    max-width: 520px;
    margin: 0 auto;
    display: grid;
    gap: 1.2rem;
}
.info-box {
    padding: 1rem;
    background: #fff8d4;
    border-radius: 14px;
    border: 1px solid #f1e49a;
}
.scanner-shell { display: grid; gap: 1.5rem; }
.scanner-top, .scanner-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.scanner-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.scanner-metrics strong {
    display: block;
    font-size: 1.8rem;
    margin-top: 0.5rem;
}
.scan-feedback {
    min-height: 220px;
    padding: 1.5rem;
    display: grid;
    align-content: center;
    text-align: center;
}
.scanner-video {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: #000;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}
.scan-neutral { background: #f4f8fb; }
.scan-valid { background: #e9f7ef; color: #176a3f; }
.scan-warning { background: #fff3df; color: #8b5a11; }
.scan-danger { background: #fdeeee; color: #8a1f1f; }
.scan-info { background: #eaf0ff; color: #1d4b99; }
.centered-card { max-width: 640px; margin: 0 auto; text-align: center; }
.public-event { margin-bottom: 1.5rem; }

@media (max-width: 960px) {
    .app-shell, .hero, .two-col, .checkout-grid, .scanner-top, .scanner-grid {
        grid-template-columns: 1fr;
    }
    .sidebar { display: none; }
    .main-shell, .guest-main { padding: 1.25rem; }
    .form-grid { grid-template-columns: 1fr; }
}