/* ============================================
   E-NUM DESIGN SYSTEM
   "Borderless Elegance" - Blue & White Theme
   ============================================ */

/* Import Google Fonts - Poppins */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* ============================================
   ROOT VARIABLES - BORDERLESS BLUE THEME
   ============================================ */
:root {
    /* Primary Blue Palette */
    --primary-blue: #007bff;
    --primary-blue-dark: #0056b3;
    --primary-blue-light: #e7f1ff;
    --primary-gradient: linear-gradient(135deg, #0056b3 0%, #007bff 100%);
    
    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #6c757d;
    --dark-text: #343a40;
    --darker-text: #212529;
    
    /* Shadows - Subtle floating effect */
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 15px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 5px 25px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
* {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    background: var(--off-white);
    color: var(--dark-text);
    min-height: 100vh;
}

/* Remove all heavy backgrounds */
.bg-gradient-sky {
    background: var(--off-white);
}

/* ============================================
   BORDERLESS CARDS - Floating Effect
   ============================================ */
.card-glass {
    background: var(--white);
    border: none;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    backdrop-filter: none;
    transition: all var(--transition-normal);
}

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

.card-glass .card-header {
    background: transparent;
    border-bottom: 1px solid var(--light-gray);
}

/* ============================================
   SIDEBAR - Clean White with Blue Accents
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 260px;
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: all var(--transition-normal);
    overflow-y: auto;
    border-right: 1px solid var(--light-gray);
}

.sidebar-brand {
    padding: 1.5rem 1.25rem;
    border-bottom: none;
    background: transparent;
}

.sidebar-brand h4 {
    color: var(--primary-blue-dark);
    font-weight: 700;
    font-size: 1.2rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-brand .brand-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--white);
}

.sidebar-brand .brand-logo {
    max-height: 36px;
    max-width: 36px;
    border-radius: 8px;
    object-fit: contain;
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav .nav-link {
    color: var(--medium-gray);
    padding: 0.75rem 1.25rem;
    margin: 0.2rem 0.75rem;
    border-radius: 10px;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
    border: none;
}

.sidebar-nav .nav-link i {
    font-size: 1.1rem;
    color: var(--medium-gray);
}

.sidebar-nav .nav-link:hover {
    background: var(--primary-blue-light);
    color: var(--primary-blue);
}

.sidebar-nav .nav-link:hover i {
    color: var(--primary-blue);
}

.sidebar-nav .nav-link.active {
    background: var(--primary-blue-light);
    color: var(--primary-blue);
    font-weight: 600;
}

.sidebar-nav .nav-link.active i {
    color: var(--primary-blue);
}

.sidebar-nav .nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--primary-gradient);
    border-radius: 0 4px 4px 0;
}

.sidebar-user {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--light-gray);
    background: var(--off-white);
}

.sidebar-user-info {
    color: var(--dark-text);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
    color: var(--white);
}

.sidebar-user-details h6 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-text);
}

.sidebar-user-details p {
    margin: 0;
    font-size: 0.75rem;
    color: var(--medium-gray);
}

/* ============================================
   MAIN WRAPPER & TOP NAVBAR - Clean White
   ============================================ */
.main-wrapper {
    margin-left: 260px;
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.top-navbar {
    background: var(--white);
    border-bottom: 1px solid var(--light-gray);
    padding: 1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: none;
}

.top-navbar .navbar-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--darker-text);
    margin: 0;
}

.hamburger-menu {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-text);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background var(--transition-fast);
}

.hamburger-menu:hover {
    background: var(--off-white);
}

/* Dropdown styling */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: 12px;
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.5rem 1rem;
}

.dropdown-item:hover {
    background: var(--primary-blue-light);
    color: var(--primary-blue);
}

/* ============================================
   STAT CARDS - Clean with Blue Accent Bar
   ============================================ */
.stat-card {
    background: var(--white);
    border: none;
    border-radius: 16px;
    padding: 1.5rem 1.5rem 1.5rem 1.75rem;
    color: var(--dark-text);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

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

.stat-card.stat-purple::before { background: linear-gradient(180deg, #667eea, #764ba2); }
.stat-card.stat-amber::before { background: linear-gradient(180deg, #f59e0b, #d97706); }
.stat-card.stat-green::before { background: linear-gradient(180deg, #10b981, #059669); }
.stat-card.stat-red::before { background: linear-gradient(180deg, #ef4444, #dc2626); }

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

.stat-card h5 {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--medium-gray);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--darker-text);
}

.stat-card .stat-icon {
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2.5rem;
    color: var(--primary-blue);
    opacity: 0.15;
}

/* ============================================
   BUTTONS - Elegant Blue
   ============================================ */
.btn-gradient {
    background: var(--primary-gradient);
    border: none;
    color: var(--white);
    font-weight: 500;
    padding: 0.625rem 1.5rem;
    border-radius: 10px;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
    color: var(--white);
}

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

.btn-primary {
    background: var(--primary-blue);
    border: none;
}

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

.btn-outline-primary {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.btn-outline-primary:hover {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

/* ============================================
   TABLES - Borderless & Clean
   ============================================ */
.card-table {
    background: transparent;
    margin: 0;
}

.card-table thead {
    background: var(--off-white);
}

.card-table thead th {
    border: none;
    color: var(--medium-gray);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.8px;
    padding: 0.875rem 1rem;
}

.card-table tbody tr {
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--light-gray);
}

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

.card-table tbody tr:hover {
    background: var(--primary-blue-light);
}

.card-table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border: none;
    color: var(--dark-text);
}

/* ============================================
   FORMS - Bottom Border Style
   ============================================ */
.form-control,
.form-select {
    border: none;
    border-bottom: 2px solid var(--light-gray);
    border-radius: 0;
    padding: 0.75rem 0;
    background: transparent;
    transition: all var(--transition-fast);
    color: var(--dark-text);
}

.form-control:focus,
.form-select:focus {
    border-bottom-color: var(--primary-blue);
    box-shadow: none;
    background: transparent;
}

.form-control::placeholder {
    color: var(--medium-gray);
}

.form-label {
    font-weight: 500;
    color: var(--dark-text);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* File input special styling */
input[type="file"].form-control {
    border: 1px dashed var(--light-gray);
    border-radius: 10px;
    padding: 1rem;
}

input[type="file"].form-control:focus {
    border: 1px dashed var(--primary-blue);
}

/* ============================================
   BADGES - Clean & Minimal
   ============================================ */
.badge {
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.75rem;
    letter-spacing: 0.3px;
}

.badge.bg-warning {
    background: #fef3c7 !important;
    color: #92400e !important;
}

.badge.bg-success {
    background: #d1fae5 !important;
    color: #065f46 !important;
}

.badge.bg-danger {
    background: #fee2e2 !important;
    color: #991b1b !important;
}

.badge.bg-primary {
    background: var(--primary-blue-light) !important;
    color: var(--primary-blue-dark) !important;
}

.badge.bg-secondary {
    background: var(--light-gray) !important;
    color: var(--medium-gray) !important;
}

.badge.bg-info {
    background: #e0f2fe !important;
    color: #0369a1 !important;
}

/* ============================================
   ALERTS - Minimal & Clean
   ============================================ */
.alert {
    border: none;
    border-radius: 12px;
    border-left: 4px solid;
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border-left-color: #10b981;
}

.alert-danger {
    background: #fef2f2;
    color: #991b1b;
    border-left-color: #ef4444;
}

.alert-warning {
    background: #fffbeb;
    color: #92400e;
    border-left-color: #f59e0b;
}

.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border-left-color: var(--primary-blue);
}

/* ============================================
   SECTION TITLES - Floating Style
   ============================================ */
.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--darker-text);
    margin-bottom: 1.5rem;
}

/* ============================================
   FOOTER - Clean
   ============================================ */
.footer {
    background: transparent;
    border-top: 1px solid var(--light-gray);
    padding: 1.5rem;
    text-align: center;
    margin-top: 2rem;
}

.footer p {
    margin: 0;
    color: var(--medium-gray);
    font-size: 0.85rem;
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination .page-link {
    border: none;
    color: var(--dark-text);
    padding: 0.5rem 0.875rem;
    margin: 0 0.15rem;
    border-radius: 8px;
}

.pagination .page-link:hover {
    background: var(--primary-blue-light);
    color: var(--primary-blue);
}

.pagination .page-item.active .page-link {
    background: var(--primary-blue);
    color: var(--white);
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-wrapper {
        margin-left: 0;
    }

    .hamburger-menu {
        display: block;
    }
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sidebar-overlay.show {
    display: block;
    opacity: 1;
}

/* ============================================
   SCROLLBAR - Minimal
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--light-gray);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--medium-gray);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-primary-blue {
    color: var(--primary-blue) !important;
}

.bg-primary-blue {
    background: var(--primary-blue) !important;
}

.shadow-elegant {
    box-shadow: var(--shadow-md);
}