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

:root {
    --primary-blue: #2563eb;
    --primary-blue-dark: #1d4ed8;
    --primary-blue-light: #3b82f6;
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gray-50);
    color: var(--black);
    line-height: 1.6;
}

.layout-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
}

.sidebar-nav {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--gray-700);
    text-decoration: none;
    transition: all 0.2s;
    margin-bottom: 4px;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--gray-100);
    color: var(--primary-blue);
}

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

.nav-item svg {
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--gray-200);
}

.nav-item.logout {
    color: var(--error);
}

.nav-item.logout:hover {
    background: #fee;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

.top-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-700);
}

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

.user-name {
    font-weight: 500;
    color: var(--gray-700);
}

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

.page-content {
    padding: 32px;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.dashboard-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.text-muted {
    color: var(--gray-500);
    font-size: 14px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    gap: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.blue {
    background: #dbeafe;
    color: var(--primary-blue);
}

.stat-icon.green {
    background: #d1fae5;
    color: var(--success);
}

.stat-icon.purple {
    background: #e9d5ff;
    color: #9333ea;
}

.stat-icon.orange {
    background: #fed7aa;
    color: var(--warning);
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

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

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

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-white {
    background: var(--white);
    color: var(--primary-blue);
    border: 1px solid var(--gray-200);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.btn-icon:hover {
    background: var(--white);
}

/* Alerts */
.alert {
    padding: 16px;
    border-radius: 8px;
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    align-items: flex-start;
}

.alert svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-info {
    background: #dbeafe;
    color: var(--primary-blue);
    border: 1px solid #93c5fd;
}

.alert-success {
    background: #d1fae5;
    color: var(--success);
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: #fee2e2;
    color: var(--error);
    border: 1px solid #fca5a5;
}

.alert strong {
    display: block;
    margin-bottom: 4px;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-900);
}

.link-primary {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
}

.link-primary:hover {
    text-decoration: underline;
}

/* Banners Grid */
.banners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.banner-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.banner-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.banner-image {
    position: relative;
    padding-top: 100%;
    background: var(--gray-100);
    overflow: hidden;
}

.banner-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    opacity: 0;
    transition: opacity 0.2s;
}

.banner-card:hover .banner-overlay {
    opacity: 1;
}

.banner-info {
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.banner-template {
    font-weight: 500;
    color: var(--gray-900);
    text-transform: capitalize;
}

.banner-date {
    font-size: 13px;
    color: var(--gray-500);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 64px 32px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    margin-bottom: 32px;
}

.empty-state svg {
    color: var(--gray-300);
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--gray-500);
    margin-bottom: 24px;
}

/* Quick Actions */
.quick-actions {
    margin-top: 32px;
}

.quick-actions h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 20px;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.action-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 24px;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.action-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.action-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.action-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.action-card p {
    color: var(--gray-500);
    font-size: 14px;
}

/* Login Page */
.login-page {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 440px;
}

.login-box {
    background: var(--white);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-login {
    display: inline-flex;
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.login-header p {
    color: var(--gray-500);
    font-size: 14px;
}

.login-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    background: var(--gray-100);
    padding: 4px;
    border-radius: 8px;
}

.tab-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--gray-600);
}

.tab-btn.active {
    background: var(--white);
    color: var(--gray-900);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.login-form {
    margin-bottom: 0;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
}

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

.login-footer {
    text-align: center;
    margin-top: 24px;
}

.login-footer p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
}

/* Toast Notification */
.toast-notification {
    position: fixed;
    top: 24px;
    right: 24px;
    background: var(--white);
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10000;
    min-width: 320px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.toast-notification.success {
    border-left: 4px solid var(--success);
}

.toast-notification.error {
    border-left: 4px solid var(--error);
}

.toast-notification.info {
    border-left: 4px solid var(--info);
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-400);
    padding: 4px;
    display: flex;
}

.toast-close:hover {
    color: var(--gray-600);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .page-content {
        padding: 20px;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .banners-grid {
        grid-template-columns: 1fr;
    }
    
    .actions-grid {
        grid-template-columns: 1fr;
    }
}