/**
 * NIELIT Bhubaneswar - Modern Admin Theme
 * Version: 1.0
 * Author: NIELIT Bhubaneswar
 */

/* ============================================
   CSS VARIABLES (THEME COLORS)
   ============================================ */
:root {
    /* Primary Colors - Deep Blue Theme (Matching Public Pages) */
    --primary: #0d47a1;
    --primary-dark: #0a3a7f;
    --primary-light: #1565c0;
    
    /* Secondary Colors */
    --secondary: #64748b;
    --secondary-dark: #475569;
    --secondary-light: #94a3b8;
    
    /* Accent Color (Gold - Matching Public Pages) */
    --accent-gold: #ffc107;
    
    /* Status Colors */
    --success: #10b981;
    --success-dark: #059669;
    --success-light: #34d399;
    
    --warning: #f59e0b;
    --warning-dark: #d97706;
    --warning-light: #fbbf24;
    
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --danger-light: #f87171;
    
    --info: #06b6d4;
    --info-dark: #0891b2;
    --info-light: #22d3ee;
    
    /* Neutral Colors */
    --dark: #1e293b;
    --gray: #64748b;
    --light: #f0f9ff;
    --white: #ffffff;
    
    /* Background Colors - Deep Blue Gradient (Matching Public Pages) */
    --bg-body: #f8f9fa;
    --bg-card: #ffffff;
    --bg-sidebar: linear-gradient(180deg, #0d47a1 0%, #1565c0 100%);
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    /* Border & Shadow */
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 14px;
    overflow-x: hidden;
}

/* ============================================
   ADMIN LAYOUT
   ============================================ */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: 260px;
    background: var(--bg-sidebar);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.admin-sidebar::-webkit-scrollbar {
    width: 6px;
}

.admin-sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

.admin-sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
}

.sidebar-logo {
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo img {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-full);
    background: var(--white);
    padding: 8px;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.sidebar-logo h5 {
    color: var(--white);
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.sidebar-logo small {
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
}

.sidebar-nav {
    padding: var(--spacing-lg) 0;
}

.nav-item {
    margin: 4px var(--spacing-md);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-size: 14px;
    font-weight: 500;
    width: 100%;
    text-align: left;
}

.nav-link i {
    width: 20px;
    min-width: 20px;
    margin-right: 12px;
    font-size: 16px;
    text-align: center;
    flex-shrink: 0;
}

.nav-link span {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transform: translateX(4px);
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.nav-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-md) var(--spacing-lg);
}

/* Main Content */
.admin-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
    transition: var(--transition);
}

/* Top Bar */
.admin-topbar {
    background: var(--white);
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-left h4 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-left small {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 400;
    display: block;
    margin-top: 4px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

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

.user-details {
    text-align: right;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    display: block;
}

.user-role {
    font-size: 12px;
    color: var(--text-secondary);
}

.user-avatar {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    box-shadow: var(--shadow-md);
}

/* Content Area */
.admin-main {
    padding: var(--spacing-xl);
}

/* ============================================
   CARDS & COMPONENTS
   ============================================ */

/* Statistics Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: var(--spacing-md);
}

.stat-card.primary .stat-icon {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.stat-card.success .stat-icon {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-card.warning .stat-icon {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.stat-card.info .stat-icon {
    background: rgba(6, 182, 212, 0.1);
    color: var(--info);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: var(--spacing-sm);
}

/* Content Card */
.content-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--light);
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ============================================
   TABLES
   ============================================ */
.table-responsive {
    overflow-x: auto;
}

.modern-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.modern-table thead th {
    background: var(--light);
    color: var(--text-primary);
    font-weight: 600;
    padding: 16px;
    text-align: left;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    white-space: nowrap;
}

.modern-table thead th:first-child {
    border-radius: var(--radius-md) 0 0 0;
}

.modern-table thead th:last-child {
    border-radius: 0 var(--radius-md) 0 0;
}

.modern-table tbody td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.modern-table tbody tr {
    transition: var(--transition-fast);
}

.modern-table tbody tr:hover {
    background: var(--light);
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn:active {
    transform: translateY(0);
}

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

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

.btn-success {
    background: var(--success);
    color: var(--white);
}

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

.btn-warning {
    background: var(--warning);
    color: var(--white);
}

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

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

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

.btn-info {
    background: var(--info);
    color: var(--white);
}

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

.btn-secondary {
    background: var(--secondary);
    color: var(--white);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.badge-info {
    background: rgba(6, 182, 212, 0.1);
    color: var(--info);
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    border-left: 4px solid;
}

.alert i {
    font-size: 20px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-dark);
    border-color: var(--success);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-dark);
    border-color: var(--danger);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-dark);
    border-color: var(--warning);
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    color: var(--info-dark);
    border-color: var(--info);
}

.alert-dismissible {
    position: relative;
    padding-right: 50px;
}

.alert .btn-close {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.5;
    transition: var(--transition-fast);
}

.alert .btn-close:hover {
    opacity: 1;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition-fast);
    background: var(--white);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition-fast);
    background: var(--white);
    color: var(--text-primary);
    cursor: pointer;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ============================================
   MODALS
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-dialog {
    background: var(--white);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    background: var(--primary);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ============================================
   LOGIN PAGE
   ============================================ */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: var(--spacing-xl);
}

.login-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 450px;
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    padding: var(--spacing-2xl) var(--spacing-xl);
    text-align: center;
}

.login-logo {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: var(--white);
    padding: 10px;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.login-header h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
}

.login-header p {
    font-size: 14px;
    opacity: 0.9;
    margin: 0;
}

.login-body {
    padding: var(--spacing-2xl) var(--spacing-xl);
}

.login-footer {
    background: var(--light);
    padding: var(--spacing-lg) var(--spacing-xl);
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-sidebar.show {
        transform: translateX(0);
    }
    
    .admin-content {
        margin-left: 0;
    }
    
    .admin-topbar {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .topbar-left h4 {
        font-size: 18px;
    }
    
    .user-details {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-main {
        padding: var(--spacing-lg);
    }
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.d-flex {
    display: flex;
}

.align-items-center {
    align-items: center;
}

.justify-content-between {
    justify-content: space-between;
}

.gap-2 {
    gap: var(--spacing-sm);
}

.gap-3 {
    gap: var(--spacing-md);
}

.w-100 {
    width: 100%;
}