/* Modern SaaS Visual Style for GK Quiz Admin Platform */

:root {
    --navy-bg: #07152F;
    --navy-sidebar: #0B1B3A;
    --navy-card: #13274C;
    --purple-primary: #5B3DF5;
    --purple-hover: #4829E0;
    --purple-light: #EEF0FF;
    --lavender-bg: #F8F7FF;
    --white: #FFFFFF;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --border-color: #E2E8F0;
    
    --success: #16B981;
    --success-light: #D1FAE5;
    --info: #2563EB;
    --info-light: #DBEAFE;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --danger: #EF4444;
    --danger-light: #FEE2E2;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--lavender-bg);
    color: var(--text-primary);
    line-height: 1.5;
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--navy-sidebar);
    color: #FFFFFF;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #5B3DF5, #2563EB);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    color: #FFFFFF;
}

.sidebar-brand-title {
    font-size: 16px;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: -0.2px;
}

.sidebar-menu {
    padding: 20px 14px;
    flex: 1;
    overflow-y: auto;
}

.menu-category {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: #64748B;
    margin: 16px 12px 8px;
    letter-spacing: 0.5px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: #94A3B8;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    transition: all 0.2s ease;
}

.nav-item:hover {
    color: #FFFFFF;
    background-color: rgba(255,255,255,0.06);
}

.nav-item.active {
    color: #FFFFFF;
    background-color: var(--purple-primary);
    box-shadow: 0 4px 12px rgba(91, 61, 245, 0.3);
}

.nav-icon {
    font-size: 18px;
}

/* Main Layout */
.main-wrapper {
    margin-left: 260px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

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

.header-search {
    display: flex;
    align-items: center;
    background-color: var(--lavender-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 6px 16px;
    width: 320px;
}

.header-search input {
    border: none;
    background: transparent;
    outline: none;
    padding-left: 8px;
    width: 100%;
    font-size: 13px;
    color: var(--text-primary);
}

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

.app-selector-dropdown {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--lavender-bg);
    padding: 6px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.app-selector-dropdown select {
    border: none;
    background: transparent;
    outline: none;
    font-weight: 600;
    font-size: 13px;
    color: var(--purple-primary);
    cursor: pointer;
}

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

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--purple-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

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

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

/* KPI Cards Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.kpi-info h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 6px;
}

.kpi-info .kpi-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.icon-purple { background: #EEF0FF; color: var(--purple-primary); }
.icon-green  { background: var(--success-light); color: var(--success); }
.icon-blue   { background: var(--info-light); color: var(--info); }
.icon-orange { background: var(--warning-light); color: var(--warning); }

/* Card Component */
.card {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
    overflow: hidden;
}

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

.card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.card-body {
    padding: 24px;
}

/* Custom Table */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

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

table.custom-table th {
    background-color: #F8FAFC;
    padding: 14px 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

table.custom-table td {
    padding: 16px 20px;
    font-size: 14px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

table.custom-table tr:hover td {
    background-color: #F8FAFC;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-info    { background: var(--info-light); color: var(--info); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger  { background: var(--danger-light); color: var(--danger); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--purple-primary);
    color: #FFFFFF;
}
.btn-primary:hover { background-color: var(--purple-hover); }

.btn-secondary {
    background-color: #E2E8F0;
    color: var(--text-primary);
}
.btn-secondary:hover { background-color: #CBD5E1; }

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    background-color: #FFFFFF;
}

.form-control:focus {
    border-color: var(--purple-primary);
    box-shadow: 0 0 0 3px rgba(91, 61, 245, 0.1);
}

/* Android Live Card Preview Styling */
.category-preview-container {
    background: #0B1B3A;
    border-radius: var(--radius-lg);
    padding: 24px;
    color: #FFFFFF;
    max-width: 320px;
    box-shadow: var(--shadow-lg);
}

.android-category-card {
    height: 140px;
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.android-card-icon {
    font-size: 32px;
}

.android-card-title {
    font-size: 18px;
    font-weight: 700;
}

.android-card-subtitle {
    font-size: 12px;
    opacity: 0.85;
}