/* ===== 后台管理样式 ===== */
:root {
    --ink: #0d0d12;
    --ink-light: #1a1a24;
    --gold: #c9a84c;
    --gold-dim: rgba(201, 168, 76, 0.3);
    --vermillion: #b5342b;
    --text: #d4cbb8;
    --text-dim: rgba(212, 203, 184, 0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Noto Serif SC', 'Georgia', serif;
    background: var(--ink);
    color: var(--text);
    min-height: 100vh;
    display: flex;
}

/* 侧边栏 */
.sidebar {
    width: 220px;
    background: var(--ink-light);
    border-right: 1px solid var(--gold-dim);
    padding: 20px 0;
    flex-shrink: 0;
}

.sidebar h2 {
    color: var(--gold);
    text-align: center;
    padding: 10px 0 20px;
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.sidebar a {
    display: block;
    padding: 12px 24px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.sidebar a:hover, .sidebar a.active {
    color: var(--gold);
    background: rgba(201,168,76,0.05);
    border-left-color: var(--gold);
}

/* 主内容区 */
.main {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.main h1 {
    color: var(--gold);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

/* 表格 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

th, td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid rgba(201,168,76,0.1);
    font-size: 0.88rem;
}

th { color: var(--gold); font-weight: normal; }

td { color: var(--text-dim); max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

tr:hover td { color: var(--text); }

/* 按钮 */
.btn {
    background: var(--gold);
    color: var(--ink);
    border: none;
    padding: 10px 20px;
    font-family: inherit;
    font-size: 0.88rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
}

.btn:hover { opacity: 0.85; }

.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

.btn-danger {
    background: var(--vermillion);
    color: #fff;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gold-dim);
    color: var(--gold);
}

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

/* 表单 */
.form-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 50;
    justify-content: center;
    align-items: center;
}

.form-overlay.show { display: flex; }

.form-box {
    background: var(--ink-light);
    border: 1px solid var(--gold-dim);
    border-radius: 10px;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
}

.form-box h3 {
    color: var(--gold);
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    color: var(--gold);
    font-size: 0.82rem;
    margin-bottom: 4px;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    background: var(--ink);
    border: 1px solid rgba(201,168,76,0.15);
    color: var(--text);
    font-family: inherit;
    font-size: 0.88rem;
    border-radius: 4px;
}

.form-group textarea { min-height: 80px; resize: vertical; }

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

/* 登录页 */
.login-box {
    max-width: 360px;
    margin: 100px auto;
    padding: 40px;
    background: var(--ink-light);
    border: 1px solid var(--gold-dim);
    border-radius: 12px;
    text-align: center;
}

.login-box h1 { color: var(--gold); margin-bottom: 20px; font-size: 1.3rem; }

.login-box label {
    display: block;
    text-align: left;
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.login-box input {
    width: 100%;
    padding: 12px;
    margin-bottom: 14px;
    background: var(--ink);
    border: 1px solid rgba(201,168,76,0.15);
    color: var(--text);
    font-family: inherit;
    font-size: 0.95rem;
    border-radius: 4px;
}

.login-box .btn { width: 100%; margin-top: 8px; }

.login-box .error { color: var(--vermillion); margin-bottom: 16px; font-size: 0.9rem; }

.back-link {
    display: block;
    margin-top: 20px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.85rem;
}

.back-link:hover { color: var(--gold); }

/* 文件上传 */
input[type="file"] {
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* 响应式 */
@media (max-width: 768px) {
    body { flex-direction: column; }
    .sidebar { width: 100%; padding: 10px 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 4px; }
    .sidebar h2 { display: none; }
    .sidebar a { padding: 8px 16px; font-size: 0.8rem; border-left: none; border-bottom: 2px solid transparent; }
    .sidebar a:hover, .sidebar a.active { border-left-color: transparent; border-bottom-color: var(--gold); }
}