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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #28a745;
    --danger-color: #e74c3c;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --dark-color: #2c3e50;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --white-color: #ffffff;
    --border-radius: 12px;
    --box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    color: var(--dark-color);
    line-height: 1.6;
}

/* Header Styles */
.main-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    padding: 1rem 0;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo i {
    font-size: 2.2rem;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo h1 {
    color: var(--dark-color);
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-user {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-welcome {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 25px;
}

.user-welcome i {
    font-size: 1.2rem;
    color: var(--primary-color);
}

.logout-btn {
    background: linear-gradient(135deg, var(--danger-color), #c0392b);
    color: var(--white-color);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.logout-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

/* Main Container */
.main-container {
    max-width: 1400px;
    margin: 1rem auto;
    padding: 0 1rem;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
    padding: 2rem;
}

.login-box {
    background: var(--white-color);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
    max-width: 400px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-box h1 {
    margin-bottom: 2rem;
    color: var(--dark-color);
    font-size: 2.2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e1e5e9;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--light-color);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: var(--white-color);
}

button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Admin/User Layout */
.admin-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}

.admin-sidebar {
    background: var(--white-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    height: fit-content;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.admin-sidebar nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    color: var(--dark-color);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.admin-sidebar nav a i {
    width: 1.25rem;
    text-align: center;
}

.admin-content {
    background: var(--white-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.admin-content h1 {
    color: var(--dark-color);
    margin-bottom: 2rem;
    font-size: 2.2rem;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-content h1 i {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Cards */
.card {
    background: var(--light-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card h2 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card h2 i {
    color: var(--primary-color);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--white-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.stat-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.stat-card.users i { 
    background: linear-gradient(135deg, #3498db, #2980b9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card.regions i { 
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card.files i { 
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card h3 {
    color: var(--gray-color);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.stat-card p {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--dark-color);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    background: var(--white-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.data-table th {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
    padding: 1.25rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 1.25rem;
    border-bottom: 1px solid #e9ecef;
    font-size: 0.95rem;
}

.data-table tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

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

/* Forms */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-row input,
.form-row select,
.form-row textarea {
    padding: 1rem;
    border: 2px solid #e1e5e9;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white-color);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-edit {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: var(--white-color);
}

.btn-delete {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: var(--white-color);
}

.btn-success {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: var(--white-color);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    border: 1px solid transparent;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-color: #ffeaa7;
}

/* Footer */
.main-footer {
    background: rgba(44, 62, 80, 0.95);
    color: var(--white-color);
    padding: 2rem 0;
    margin-top: 3rem;
    backdrop-filter: blur(10px);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    padding: 0 1rem;
}

/* Responsive Design */
@media (max-width: 968px) {
    .admin-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .header-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header-user {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-container {
        padding: 0 1rem;
    }
    
    .header-container {
        padding: 0 1rem;
    }
    
    .login-box {
        padding: 2rem;
        margin: 1rem;
    }
    
    .admin-content {
        padding: 1.5rem;
    }
    
    .card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .admin-content h1 {
        font-size: 1.8rem;
    }
    
    .stat-card p {
        font-size: 2rem;
    }
}