:root {
    --primary: #1e293b;
    --accent: #ffca28;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #1e293b;
    --border: #e2e8f0;
}

body {
    font-family: 'Kanit', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
}

.admin-header {
    background-color: var(--primary);
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.admin-logo {
    color: var(--accent);
    font-size: 1.4rem;
    font-weight: 800;
    text-decoration: none;
}

.admin-nav {
    display: flex;
    align-items: center;
    gap: 15px;
}

.admin-nav a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s;
}

.admin-nav a:hover {
    color: var(--accent);
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    background: var(--card);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

h2 {
    font-weight: 700;
    margin-bottom: 30px;
}

.btn {
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    cursor: pointer;
}

.btn-primary { background: var(--accent); color: var(--primary); }
.btn-primary:hover { background: #eab308; transform: translateY(-2px); }

.btn-secondary { background: #64748b; color: #fff; }
.btn-secondary:hover { background: #475569; }

.btn-danger { background: #ef4444; color: #fff; }
.btn-danger:hover { background: #dc2626; }

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 20px;
}

th, td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: #f8fafc;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}

tr:hover { background: #f8fafc; }

.thumbnail {
    width: 60px;
    height: 40px;
    object-fit: cover;
    border-radius: 8px;
}

.form-group { margin-bottom: 25px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 10px; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

.form-group input:focus { border-color: var(--accent); }

.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 15px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-danger, .admin-nav .btn-danger {
    background-color: #ef4444;
    color: #fff !important;
}

.btn-danger:hover, .admin-nav .btn-danger:hover {
    background-color: #dc2626;
}