/* Theme Variables */
:root {
    --bg-primary: #f5f6fa;
    --bg-secondary: #ffffff;
    --border-color: #e8e8e8;
    --sidebar-active: #f0edff;
    --sidebar-active-text: #6c63ff;
    --primary-accent: #6c63ff;
    --primary-accent-hover: #574feb;
    --text-primary: #1a1a2e;
    --text-secondary: #666666;
    --table-header-bg: #f8f9fa;
    --table-row-hover: #f5f3ff;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --card-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    --success-color: #00c853;
    --danger-color: #ff1744;
    --warning-color: #ff9800;
    --info-color: #00b0ff;
    --card-border: 1px solid #eeeeee;
}

[data-theme="dark"] {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --border-color: rgba(255, 255, 255, 0.06);
    --sidebar-active: rgba(108, 99, 255, 0.15);
    --sidebar-active-text: #8b83ff;
    --primary-accent: #8b83ff;
    --primary-accent-hover: #7168ff;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --table-header-bg: #16213e;
    --table-row-hover: rgba(108, 99, 255, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --card-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    --success-color: #00e676;
    --danger-color: #ff5252;
    --warning-color: #ffc107;
    --info-color: #40c4ff;
    --card-border: 1px solid rgba(255, 255, 255, 0.06);
}

/* Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    transition: background-color 0.25s ease, border-color 0.25s ease, color 0.15s ease;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

a {
    color: var(--primary-accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-accent-hover);
}

/* Auth Layout (Login page) */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #6c63ff 0%, #3f3d56 100%);
    padding: 20px;
}

.auth-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    padding: 40px 30px;
    text-align: center;
    border: var(--card-border);
}

.auth-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-accent);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.2);
}

.btn {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: none;
    background-color: var(--primary-accent);
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

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

.btn:active {
    transform: scale(0.98);
}

.alert-danger {
    background-color: rgba(255, 23, 68, 0.1);
    color: var(--danger-color);
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 20px;
    text-align: left;
    border: 1px solid rgba(255, 23, 68, 0.2);
}

/* Admin Panel Layout */
.admin-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-brand {
    padding: 24px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-brand span {
    color: var(--primary-accent);
}

.sidebar-menu {
    list-style: none;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.sidebar-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s;
}

.sidebar-item a:hover {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.sidebar-item.active a {
    background-color: var(--sidebar-active);
    color: var(--sidebar-active-text);
    font-weight: 600;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-content {
    margin-left: 250px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    height: 70px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 90;
}

.header-title {
    font-size: 18px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.theme-toggle:hover {
    background-color: var(--bg-primary);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
}

/* Content Area */
.content-body {
    padding: 32px;
    flex-grow: 1;
}

/* KPI Cards Layout */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.kpi-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--primary-accent);
}

.kpi-card.active::before { background-color: var(--success-color); }
.kpi-card.blocked::before { background-color: var(--danger-color); }
.kpi-card.warning::before { background-color: var(--warning-color); }
.kpi-card.info::before { background-color: var(--info-color); }

.kpi-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.kpi-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Dashboard Sections */
.dashboard-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.dashboard-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th, .table td {
    padding: 14px 16px;
    font-size: 14px;
}

.table th {
    background-color: var(--table-header-bg);
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.table tr {
    transition: background-color 0.15s;
}

.table tr:hover {
    background-color: var(--table-row-hover);
}

.table tr.clickable {
    cursor: pointer;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background-color: rgba(0, 200, 83, 0.12);
    color: var(--success-color);
}

.badge-danger {
    background-color: rgba(255, 23, 68, 0.12);
    color: var(--danger-color);
}

.badge-warning {
    background-color: rgba(255, 152, 0, 0.12);
    color: var(--warning-color);
}

.badge-info {
    background-color: rgba(0, 176, 255, 0.12);
    color: var(--info-color);
}

/* Filters & Actions bar */
.filter-bar {
    background-color: var(--bg-secondary);
    padding: 16px 24px;
    border-radius: 8px;
    border: var(--card-border);
    margin-bottom: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

.search-input {
    flex-grow: 1;
    min-width: 200px;
}

.select-filter {
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    min-width: 150px;
}

.select-filter:focus {
    border-color: var(--primary-accent);
}

/* Detail Views */
.detail-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

.detail-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    margin-bottom: 24px;
}

.detail-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.detail-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.info-value {
    font-size: 15px;
    font-weight: 600;
}

/* Stats Cards in Detail View */
.usage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

@media (max-width: 992px) {
    .usage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.usage-card {
    background-color: var(--bg-primary);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    border: var(--card-border);
}

.usage-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-accent);
}

.usage-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.action-row {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.btn-danger {
    background-color: var(--danger-color);
}
.btn-danger:hover {
    background-color: #d50000;
}

.btn-secondary {
    background-color: #616161;
}
.btn-secondary:hover {
    background-color: #424242;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal-backdrop.show {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: var(--card-border);
    transform: translateY(-20px);
    transition: transform 0.2s ease;
}

.modal-backdrop.show .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 16px;
}

.modal-body {
    padding: 24px;
    font-size: 14px;
    line-height: 1.5;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-footer .btn {
    width: auto;
    padding: 8px 16px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
}

.page-info {
    font-size: 13px;
    color: var(--text-secondary);
}

.page-controls {
    display: flex;
    gap: 8px;
}

.btn-page {
    padding: 6px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
}

.btn-page:hover:not(:disabled) {
    background-color: var(--table-row-hover);
    border-color: var(--primary-accent);
}

.btn-page:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Responsive Navigation Toggle */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    .sidebar.show {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .mobile-nav-toggle {
        display: block;
    }
    .header {
        padding: 0 16px;
    }
    .content-body {
        padding: 16px;
    }
    .detail-grid {
        grid-template-columns: 1fr;
    }
}