:root {
    --bg: #f4efe6;
    --ink: #1f1812;
    --muted: #6f655b;
    --panel: #fffaf1;
    --line: #d8c7ae;
    --brand: #8c3b2c;
    --brand-dark: #5d2318;
    --success: #245c39;
    --error: #8e2f2f;
    --shadow: 0 16px 40px rgba(76, 45, 27, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "PingFang SC", "Noto Sans SC", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(140, 59, 44, 0.12), transparent 30%),
        linear-gradient(135deg, #efe5d4, #f8f2e9 60%, #f2e8d9);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

.public-wrap,
.staff-main,
.main {
    padding: 24px;
}

.admin-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: linear-gradient(180deg, #2e1c17, #462721);
    color: #f6efe4;
    padding: 24px 18px;
}

.brand {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 24px;
}

.nav {
    display: grid;
    gap: 10px;
}

.nav a {
    padding: 10px 12px;
    border-radius: 12px;
    color: #f7e9d0;
    background: rgba(255, 255, 255, 0.04);
}

.nav a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.topbar h1,
.hero h2,
.tv-header h2 {
    margin: 0 0 8px;
    font-family: Georgia, "Times New Roman", serif;
}

.topbar p,
.hero p {
    margin: 0;
    color: var(--muted);
}

.panel,
.auth-card,
.hero-card,
.stat-card,
.card {
    background: rgba(255, 250, 241, 0.92);
    border: 1px solid rgba(216, 199, 174, 0.9);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.panel,
.auth-card,
.hero-card {
    padding: 20px;
}

.grid {
    display: grid;
    gap: 20px;
}

.grid.two {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.grid.four {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    margin-bottom: 20px;
}

.stat-card {
    padding: 18px;
}

.stat-card span {
    display: block;
    color: var(--muted);
    margin-bottom: 10px;
}

.stat-card strong {
    font-size: 28px;
}

.form-grid,
.inline-form,
.button-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.form-grid {
    flex-direction: row;
}

.form-grid label,
.form-grid .full {
    display: grid;
    gap: 8px;
    flex: 1 1 220px;
}

.form-grid .full {
    flex-basis: 100%;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
}

input,
textarea,
select,
button {
    font: inherit;
}

input,
textarea,
select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
}

textarea {
    resize: vertical;
}

.button,
button.button,
button {
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    color: #fff8ef;
    border: none;
    border-radius: 999px;
    padding: 12px 18px;
    cursor: pointer;
}

.button.ghost,
button.ghost {
    background: transparent;
    color: var(--brand);
    border: 1px solid var(--brand);
}

.flash {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 18px;
}

.flash.success {
    background: rgba(36, 92, 57, 0.12);
    color: var(--success);
}

.flash.error {
    background: rgba(142, 47, 47, 0.12);
    color: var(--error);
}

.table {
    width: 100%;
    border-collapse: collapse;
    overflow: hidden;
}

.table th,
.table td {
    padding: 12px 10px;
    border-bottom: 1px solid rgba(216, 199, 174, 0.7);
    text-align: left;
    vertical-align: top;
}

.table th {
    color: var(--muted);
    font-weight: 600;
}

.auth-card {
    max-width: 460px;
    margin: 40px auto;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.hero-text,
.hero-card {
    padding: 28px;
}

.tag {
    display: inline-flex;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(140, 59, 44, 0.12);
    color: var(--brand);
    margin-bottom: 14px;
}

.list {
    padding-left: 18px;
}

.tv-board {
    min-height: calc(100vh - 48px);
    background: linear-gradient(180deg, rgba(255, 248, 236, 0.92), rgba(255, 251, 245, 0.96));
    border-radius: 24px;
    padding: 28px;
    box-shadow: var(--shadow);
}

.tv-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.tv-table th,
.tv-table td {
    font-size: 24px;
    padding: 18px 14px;
}

.center-panel {
    max-width: 420px;
    margin: 60px auto;
    text-align: center;
}

.scan-modal[hidden] {
    display: none;
}

.scan-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.scan-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(24, 16, 13, 0.6);
    backdrop-filter: blur(2px);
}

.scan-modal-card {
    position: relative;
    z-index: 1;
    width: min(100%, 640px);
    background: rgba(255, 250, 241, 0.98);
    border: 1px solid rgba(216, 199, 174, 0.9);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 20px;
}

.scan-modal-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.scan-modal-head h3 {
    margin: 0 0 8px;
}

.scan-modal-head p {
    margin: 0;
    color: var(--muted);
}

.scan-video-wrap {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: #160f0d;
    min-height: 320px;
    margin-bottom: 16px;
}

.scan-video {
    display: block;
    width: 100%;
    height: min(70vh, 480px);
    object-fit: cover;
    background: #160f0d;
}

.scan-frame {
    position: absolute;
    inset: 50% auto auto 50%;
    width: min(62vw, 240px);
    height: min(62vw, 240px);
    max-width: calc(100% - 48px);
    max-height: calc(100% - 48px);
    transform: translate(-50%, -50%);
    border: 3px solid rgba(255, 248, 239, 0.92);
    border-radius: 24px;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.14);
    pointer-events: none;
}

.scan-result {
    display: grid;
    gap: 8px;
    padding: 14px 16px;
    margin-bottom: 16px;
    border: 1px solid rgba(216, 199, 174, 0.9);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.8);
}

.scan-result strong {
    color: var(--brand);
}

#scanResultText {
    word-break: break-all;
}

@media (max-width: 900px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .hero,
    .tv-header,
    .topbar {
        grid-template-columns: 1fr;
        display: grid;
    }

    .tv-table th,
    .tv-table td {
        font-size: 18px;
    }

    .scan-modal-card {
        padding: 16px;
    }

    .scan-modal-head {
        flex-direction: column;
    }

    .scan-video-wrap {
        min-height: 260px;
    }
}