/* ============================================================
   Cyber Tarot — 管理後台樣式
   延續主站暗色系 + 金色點綴風格
   ============================================================ */

:root {
    --gold: #d4af37;
    --gold-dim: #b8962e;
    --gold-glow: rgba(212, 175, 55, 0.4);
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --bg-hover: #222222;
    --border-color: #2a2a2a;
    --border-gold: rgba(212, 175, 55, 0.2);
    --text-primary: #e0e0e0;
    --text-secondary: #888;
    --text-muted: #555;
    --danger: #e74c3c;
    --danger-hover: #c0392b;
    --warning: #f39c12;
    --success: #27ae60;
    --info: #3498db;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
    min-height: 100vh;
}

/* ============================================================
   登入畫面
   ============================================================ */

#login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: radial-gradient(ellipse at center, #1a1a1a 0%, #0a0a0a 70%);
}

.login-card {
    text-align: center;
    padding: 48px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-gold);
    border-radius: 12px;
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.08);
}

.login-brand {
    font-family: 'Cinzel', serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 6px;
    text-shadow: 0 0 20px var(--gold-glow);
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 4px;
    margin-bottom: 24px;
}

.login-divider {
    width: 60px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--gold), transparent);
    margin: 0 auto 32px;
}

.error-text {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 16px;
    min-height: 20px;
}

.switch-account-link {
    margin-top: 12px;
    font-size: 0.8rem;
}
.switch-account-link a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}
.switch-account-link a:hover {
    color: var(--gold);
    text-decoration: underline;
}

/* ============================================================
   導覽列
   ============================================================ */

#admin-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-gold);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-family: 'Cinzel', serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 3px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-gold);
}

.nav-user span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

#btn-logout {
    padding: 6px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

#btn-logout:hover {
    border-color: var(--danger);
    color: var(--danger);
}

/* ============================================================
   主要內容區
   ============================================================ */

#admin-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

/* ============================================================
   區域切換頁籤
   ============================================================ */

#region-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.region-tab {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    color: var(--text-secondary);
}

.region-tab:hover {
    border-color: var(--border-gold);
    background: var(--bg-hover);
}

.region-tab.active {
    border-color: var(--gold);
    background: rgba(212, 175, 55, 0.08);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.1);
}

.region-tab.active .tab-label {
    color: var(--gold);
}

.tab-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.tab-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
    transition: color 0.3s;
}

.tab-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: auto;
}

/* ============================================================
   統計卡片
   ============================================================ */

.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    border-color: var(--border-gold);
    box-shadow: 0 0 16px rgba(212, 175, 55, 0.06);
}

.stat-value {
    font-family: 'Cinzel', serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

/* ============================================================
   搜尋 & 篩選
   ============================================================ */

#search-section {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

#search-input {
    flex: 1;
    min-width: 240px;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

#search-input:focus {
    border-color: var(--gold-dim);
}

#search-input::placeholder {
    color: var(--text-muted);
}

#filter-select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
}

#filter-select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

#btn-search {
    padding: 10px 24px;
    background: var(--gold);
    color: #000;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
}

#btn-search:hover {
    background: var(--gold-dim);
}

/* ============================================================
   使用者表格
   ============================================================ */

#users-section {
    margin-bottom: 24px;
}

.table-wrapper {
    overflow-x: auto;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

#users-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

#users-table thead {
    background: var(--bg-secondary);
}

#users-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 500;
    color: var(--gold-dim);
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

#users-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

#users-table tbody tr {
    background: var(--bg-card);
    transition: background 0.15s;
}

#users-table tbody tr:hover {
    background: var(--bg-hover);
}

#users-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.01);
}

#users-table tbody tr:nth-child(even):hover {
    background: var(--bg-hover);
}

.uuid-cell {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.uuid-cell:hover {
    color: var(--gold);
}

/* 狀態徽章 */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

.badge-ok {
    background: rgba(39, 174, 96, 0.15);
    color: var(--success);
    border: 1px solid rgba(39, 174, 96, 0.3);
}

.badge-danger {
    background: rgba(231, 76, 60, 0.15);
    color: var(--danger);
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.badge-warning {
    background: rgba(243, 156, 18, 0.15);
    color: var(--warning);
    border: 1px solid rgba(243, 156, 18, 0.3);
}

/* 操作按鈕 */
.action-cell {
    white-space: nowrap;
}

.action-cell button {
    padding: 4px 12px;
    margin: 2px 3px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.action-cell button:hover {
    border-color: var(--gold-dim);
    color: var(--gold);
}

.action-cell .btn-danger {
    border-color: rgba(231, 76, 60, 0.4);
    color: var(--danger);
}

.action-cell .btn-danger:hover {
    background: rgba(231, 76, 60, 0.15);
    border-color: var(--danger);
}

/* 分頁 */
#pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

#pagination button {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

#pagination button:hover {
    border-color: var(--gold-dim);
    color: var(--gold);
}

#pagination button.active {
    background: var(--gold);
    color: #000;
    border-color: var(--gold);
    font-weight: 700;
}

#pagination button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ============================================================
   審計日誌
   ============================================================ */

#audit-section {
    margin-top: 16px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.section-header:hover {
    border-color: var(--border-gold);
}

.section-header h3 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

#audit-toggle-icon {
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: transform 0.3s;
}

#audit-log {
    margin-top: 12px;
}

.audit-entry {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
}

.audit-entry:last-child {
    border-bottom: none;
}

.audit-time {
    color: var(--text-muted);
    white-space: nowrap;
    min-width: 140px;
}

.audit-action {
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.75rem;
    white-space: nowrap;
}

.audit-action.blacklist { background: rgba(231, 76, 60, 0.15); color: var(--danger); }
.audit-action.unblacklist { background: rgba(39, 174, 96, 0.15); color: var(--success); }
.audit-action.block { background: rgba(243, 156, 18, 0.15); color: var(--warning); }
.audit-action.unblock { background: rgba(39, 174, 96, 0.15); color: var(--success); }
.audit-action.modify_credits { background: rgba(52, 152, 219, 0.15); color: var(--info); }

.audit-admin {
    color: var(--gold-dim);
}

.audit-target {
    font-family: 'Courier New', monospace;
    color: var(--text-secondary);
}

.audit-detail {
    color: var(--text-muted);
    flex: 1;
}

/* ============================================================
   Modal
   ============================================================ */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-gold);
    border-radius: 12px;
    padding: 32px;
    min-width: 400px;
    max-width: 500px;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.modal-content h3 {
    font-size: 1.1rem;
    color: var(--gold);
    margin-bottom: 20px;
    font-weight: 500;
}

.modal-content label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 12px 0 6px;
}

.modal-content input[type="text"],
.modal-content input[type="number"],
.modal-content select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.modal-content select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.modal-content input:focus,
.modal-content select:focus {
    border-color: var(--gold-dim);
}

.modal-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 8px 0;
}

.modal-content p strong {
    color: var(--gold);
}

.modal-content code {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--gold-dim);
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
}

.warning-text {
    color: var(--danger) !important;
    font-weight: 500;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.btn-primary {
    padding: 10px 24px;
    background: var(--gold);
    color: #000;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: var(--gold-dim);
}

.btn-secondary {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    border-color: var(--text-secondary);
}

/* ============================================================
   響應式
   ============================================================ */

@media (max-width: 768px) {
    #admin-main {
        padding: 16px;
    }

    .stats-section {
        grid-template-columns: repeat(2, 1fr);
    }

    #search-section {
        flex-direction: column;
    }

    #search-input {
        min-width: auto;
    }

    .modal-content {
        min-width: auto;
        margin: 16px;
    }

    #admin-nav {
        flex-direction: column;
        gap: 8px;
        padding: 12px 16px;
    }
}

/* ============================================================
   載入動畫
   ============================================================ */

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 空狀態提示 */
.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ============================================================
   點數徽章 & 交易數量
   ============================================================ */

.credits-badge {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(52, 152, 219, 0.15);
    color: var(--info);
    border: 1px solid rgba(52, 152, 219, 0.3);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.tx-count {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ============================================================
   台灣版月費方案管理（預留）
   ============================================================ */

#tw-plans-section {
    margin-top: 16px;
    margin-bottom: 24px;
}

.plans-placeholder {
    padding: 24px;
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: 10px;
    margin-top: 12px;
    text-align: center;
}

.plans-placeholder p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.plan-preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.plan-preview-card {
    padding: 20px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    text-align: center;
    opacity: 0.5;
    transition: opacity 0.3s;
}

.plan-preview-card:hover {
    opacity: 0.7;
}

.plan-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.plan-price {
    font-family: 'Cinzel', serif;
    font-size: 1.2rem;
    color: var(--gold-dim);
}

/* 審計日誌新增 action 樣式 */
.audit-action.set_region { background: rgba(52, 152, 219, 0.15); color: var(--info); }

/* ============================================================
   響應式補充（區域頁籤）
   ============================================================ */

@media (max-width: 768px) {
    #region-tabs {
        flex-direction: column;
        gap: 8px;
    }

    .region-tab {
        padding: 12px 16px;
    }

    .tab-desc {
        display: none;
    }

    .plan-preview-grid {
        grid-template-columns: 1fr;
    }
}