/* ========== Reset & Base ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #22c55e;
    --warning: #f59e0b;
    --bg: #f5f5f7;
    --card-bg: #ffffff;
    --border: #e5e7eb;
    --text: #1f2937;
    --text-secondary: #6b7280;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* ========== Header ========== */
.header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.header h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.nav-tabs {
    display: flex;
    gap: 4px;
}

.nav-tab {
    padding: 8px 20px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-tab:hover {
    background: #f3f4f6;
    color: var(--text);
}

.nav-tab.active {
    background: var(--primary);
    color: #fff;
}

/* ========== Main ========== */
.main-container {
    max-width: 1400px;
    margin: 24px auto;
    padding: 0 24px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ========== Stats Grid ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-num {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ========== Card ========== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.card h3 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--text);
}

/* ========== Platform Chart ========== */
.platform-chart {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.platform-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
}

.platform-item .platform-name {
    color: var(--text);
    font-weight: 500;
}

.platform-item .platform-count {
    color: var(--primary);
    font-weight: 700;
}

/* ========== Toolbar ========== */
.toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.toolbar select,
.toolbar input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
    transition: border 0.2s;
}

.toolbar select:focus,
.toolbar input:focus {
    border-color: var(--primary);
}

.toolbar input {
    width: 200px;
}

/* ========== Buttons ========== */
.btn {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--card-bg);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
    color: var(--text);
}

.btn:hover {
    background: #f3f4f6;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

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

.btn-danger {
    color: var(--danger);
    border-color: var(--danger);
}

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

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

/* ========== Table ========== */
.table-wrap {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    white-space: nowrap;
}

th {
    background: #f9fafb;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

td {
    border-bottom: 1px solid #f3f4f6;
}

tr:last-child td { border-bottom: none; }

tr:hover td { background: #f9fafb; }

/* ========== Status Badges ========== */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-idle       { background: #dbeafe; color: #1d4ed8; }
.badge-active     { background: #dcfce7; color: #15803d; }
.badge-maintenance{ background: #fef3c7; color: #b45309; }
.badge-retired    { background: #f3f4f6; color: #6b7280; }
.badge-normal     { background: #dcfce7; color: #15803d; }
.badge-frozen     { background: #fef3c7; color: #b45309; }
.badge-banned     { background: #fee2e2; color: #dc2626; }

/* ========== Action Buttons ========== */
.actions {
    display: flex;
    gap: 4px;
}

/* ========== Modal ========== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 200;
    justify-content: center;
    align-items: flex-start;
    padding-top: 60px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--card-bg);
    border-radius: 12px;
    width: 520px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    animation: slideDown 0.2s ease;
}

.modal-lg { width: 700px; }

@keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 17px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ========== Form ========== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group .required {
    color: var(--danger);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    outline: none;
    transition: border 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* ========== Detail View ========== */
.detail-section {
    margin-bottom: 20px;
}

.detail-section h4 {
    font-size: 14px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 20px;
}

.detail-item {
    display: flex;
    font-size: 13px;
    padding: 4px 0;
}

.detail-item .detail-label {
    color: var(--text-secondary);
    min-width: 70px;
}

.detail-item .detail-value {
    color: var(--text);
    font-weight: 500;
}

.detail-sub-table {
    width: 100%;
    margin-top: 8px;
}

.detail-sub-table th {
    background: var(--bg);
}

.empty-text {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
    font-size: 13px;
}

/* ========== Login ========== */
#loginPage {
    display: none;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg);
}

.login-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.1);
    width: 380px;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 28px;
    font-size: 22px;
    color: var(--text);
}

.login-error {
    color: var(--danger);
    font-size: 13px;
    margin-bottom: 12px;
    min-height: 20px;
    text-align: center;
}

.btn-block {
    width: 100%;
    padding: 10px;
    font-size: 15px;
}

/* ========== Header User ========== */
.header-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text);
    font-weight: 500;
}

/* ========== Cell URL ========== */
.cell-url {
    max-width: 180px;
    display: inline-block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--primary);
    font-size: 12px;
}

/* ========== Responsive ========== */
@media (max-width: 900px) {
    .stats-grid { grid-template-columns: repeat(3, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .header-inner { flex-direction: column; height: auto; padding: 12px 16px; gap: 8px; }
    .toolbar { flex-direction: column; align-items: stretch; }
    .toolbar-right { margin-left: 0; flex-direction: column; }
    .toolbar input { width: 100%; }
}