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

:root {
    --primary: #1E293B;
    --secondary: #0EA5E9;
    --accent: #22C55E;
    --light: #F8FAFC;
    --dark: #0F172A;
    --gray: #64748B;
    --light-gray: #E2E8F0;
    --danger: #EF4444;
    --warning: #F59E0B;
    --success: #10B981;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.login-header {
    text-align: center;
    padding: 30px 20px;
    background: var(--primary);
    color: white;
}

.login-header .logo {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
    border-radius: 50%;
    background: white;
    padding: 10px;
}

.login-header h1 {
    font-size: 24px;
    margin-bottom: 5px;
}

.login-form {
    padding: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--light-gray);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-login:hover {
    background: #0284C7;
}

/* Header */
.main-header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-section h1 {
    font-size: 20px;
    color: var(--primary);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--secondary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.btn-logout {
    padding: 8px 16px;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: opacity 0.3s;
}

.btn-logout:hover {
    opacity: 0.9;
}

/* Dashboard Container */
.dashboard-container {
    display: flex;
    min-height: calc(100vh - 70px);
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--primary);
    color: white;
    padding: 20px 0;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 5px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left: 4px solid var(--secondary);
}

.sidebar-nav i {
    font-size: 18px;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.page-header {
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 10px;
}

/* Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-info h3 {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 5px;
}

.stat-info p {
    color: var(--gray);
    font-size: 14px;
}

/* Content Cards */
.content-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-header h2 {
    font-size: 20px;
    color: var(--primary);
}

.btn-view-all {
    padding: 8px 16px;
    background: var(--light-gray);
    color: var(--dark);
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: background 0.3s;
}

.btn-view-all:hover {
    background: var(--gray);
    color: white;
}

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

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

.data-table th {
    background: var(--light-gray);
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
    color: var(--dark);
    border-bottom: 2px solid var(--light-gray);
}

.data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--light-gray);
}

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

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--light-gray);
    color: var(--dark);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.action-buttons {
    display: flex;
    gap: 8px;
}

.btn-view,
.btn-download,
.btn-edit,
.btn-delete {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    text-decoration: none;
    transition: opacity 0.3s;
}

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

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

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

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

.btn-view:hover,
.btn-download:hover,
.btn-edit:hover,
.btn-delete:hover {
    opacity: 0.9;
}

/* Quick Actions */
.quick-actions {
    margin-top: 30px;
}

.quick-actions h2 {
    margin-bottom: 20px;
    color: var(--primary);
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.action-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    text-decoration: none;
    color: inherit;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.action-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.action-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.action-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary);
}

.action-card p {
    color: var(--gray);
    font-size: 14px;
}

/* Alert Messages */
.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.alert-danger {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.btn-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: inherit;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--light-gray);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Form Controls */
.btn-primary {
    padding: 10px 20px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

.btn-secondary {
    padding: 10px 20px;
    background: var(--light-gray);
    color: var(--dark);
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        padding: 10px 0;
    }
    
    .sidebar-nav ul {
        display: flex;
        overflow-x: auto;
        padding: 0 10px;
    }
    
    .sidebar-nav li {
        flex: 0 0 auto;
        margin-bottom: 0;
    }
    
    .sidebar-nav a {
        padding: 10px 15px;
        white-space: nowrap;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-grid {
        grid-template-columns: 1fr;
    }
}