:root {
    --bg: #f5faf7;
    --card: #ffffff;
    --primary: #2f8f63;
    --primary-dark: #256f4e;
    --secondary: #eef7f2;
    --border: #d8e8dd;
    --text: #1f2a24;
    --muted: #65756b;
    --danger: #c94a4a;
    --danger-dark: #a53434;
    --success-bg: #eaf8ef;
    --success-text: #1f7a43;
    --error-bg: #fff1f1;
    --error-text: #b33434;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Noto Sans TC", "Microsoft JhengHei", sans-serif;
    background: linear-gradient(180deg, #eef8f2 0%, #f9fcfa 100%);
    color: var(--text);
}

a {
    color: var(--primary-dark);
    text-decoration: none;
}

a:hover { text-decoration: underline; }

.container {
    width: min(960px, calc(100% - 32px));
    margin: 28px auto 40px;
}
.container.wide {
    width: min(1280px, calc(100% - 32px));
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(34, 82, 57, 0.08);
    padding: 24px;
    margin-bottom: 20px;
}

h1, h2, h3 {
    margin-top: 0;
    color: #1f3a2d;
}

.lead {
    color: var(--muted);
    line-height: 1.7;
}
.lead.small {
    font-size: 14px;
}

.top-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.top-links a,
.nav-btn,
.btn-primary,
.btn-secondary,
.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 16px;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
}

.top-links a,
.nav-btn,
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.top-links a:hover,
.nav-btn:hover,
.btn-primary:hover {
    background: var(--primary-dark);
    text-decoration: none;
}

.nav-btn.secondary,
.btn-secondary {
    background: var(--secondary);
    color: var(--primary-dark);
    border-color: var(--border);
}
.nav-btn.secondary:hover,
.btn-secondary:hover {
    background: #e0efe5;
    text-decoration: none;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-danger:hover {
    background: var(--danger-dark);
    text-decoration: none;
}

.hero-card {
    text-align: center;
    padding: 40px 24px;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-top: 20px;
}

.form-grid,
.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.form-group label {
    font-weight: 700;
    color: #264634;
}
.form-group input,
.form-group select {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    background: #fff;
    color: var(--text);
    font-size: 15px;
}
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #78b492;
    box-shadow: 0 0 0 3px rgba(120, 180, 146, 0.15);
}

.full-width { grid-column: 1 / -1; }
.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}
.action-row-wrap {
    align-items: flex-end;
}
.top-gap { margin-top: 16px; }

.alert {
    border-radius: 12px;
    padding: 12px 14px;
    margin-bottom: 16px;
    font-weight: 600;
}
.alert.success {
    background: var(--success-bg);
    color: var(--success-text);
    border: 1px solid #c9ebd3;
}
.alert.error {
    background: var(--error-bg);
    color: var(--error-text);
    border: 1px solid #f2c8c8;
}

.table-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.result-info {
    color: var(--muted);
    font-weight: 700;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    min-width: 980px;
    border-collapse: collapse;
    background: #fff;
}
th, td {
    border: 1px solid #e2ebe5;
    padding: 10px 12px;
    vertical-align: middle;
    text-align: center;
    font-size: 14px;
}
th {
    background: #f0f8f3;
    color: #234533;
}
tr:nth-child(even) td {
    background: #fbfdfb;
}
.empty-cell {
    padding: 30px 12px;
    color: var(--muted);
}

.thumb {
    width: 120px;
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid #dbe7df;
    display: block;
    margin: 0 auto;
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
}
.page-link {
    min-width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 10px;
    color: var(--primary-dark);
    font-weight: 700;
}
.page-link.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.page-link:hover { text-decoration: none; }

.preview-meta {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
    line-height: 1.7;
}
.video-wrap {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: #000;
    border-radius: 14px;
    overflow: hidden;
}
.video-wrap iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.delete-link {
    color: var(--danger-dark);
    font-weight: 700;
}

.login-card {
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .container,
    .container.wide {
        width: calc(100% - 20px);
        margin: 18px auto 28px;
    }

    .card {
        padding: 18px;
        border-radius: 14px;
    }

    .top-links,
    .form-actions,
    .pagination {
        gap: 10px;
    }

    table {
        min-width: 860px;
    }
}