/**
 * ALARABI Solutions - Professional CSS Framework
 * Moderne, responsive und performante Styles
 */

/* CSS Custom Properties */
:root {
    /* Colors */
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --secondary: #22c55e;
    --secondary-dark: #16a34a;
    --accent: #f59e0b;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #22c55e;
    --info: #3b82f6;
    
    /* Grays */
    --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;
    
    /* Text */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-white: #ffffff;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;
    
    /* Borders */
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* 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);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.loading-text {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.loading-subtitle {
    font-size: 1rem;
    opacity: 0.8;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* App Container */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    gap: var(--space-6);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.logo:hover {
    transform: translateY(-2px);
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Navigation */
.nav {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--gray-50);
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--primary);
    background: var(--gray-100);
    box-shadow: var(--shadow-sm);
}

.nav-link i {
    font-size: 1.1rem;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: var(--font-size-sm);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--gray-50);
    color: var(--primary);
    border-color: var(--primary);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gray-100);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.user-avatar:hover {
    background: var(--gray-200);
    color: var(--primary);
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--space-8) 0;
}

.page-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: var(--space-4);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.page-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Quick Actions */
.quick-actions {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-6);
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-4);
}

.action-card {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

.action-card:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.action-content {
    flex: 1;
}

.action-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.action-content p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.action-arrow {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: var(--transition);
}

.action-card:hover .action-arrow {
    color: var(--primary);
    transform: translateX(4px);
}

/* Recent Activity */
.recent-activity {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.activity-item:hover {
    background: var(--gray-100);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-text {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.activity-time {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-light);
    margin-top: auto;
    padding: var(--space-8) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    align-items: center;
}

.footer-logo {
    text-align: center;
}

.footer-logo .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.footer-logo .logo-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary);
}

.footer-info {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-3);
    }
    
    .stat-card {
        padding: var(--space-4);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .action-card {
        padding: var(--space-4);
    }
    
    .nav-link span {
        display: none;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.hidden { display: none; }
.visible { display: block; }

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .nav-link {
        display: none;
    }
    
    .main {
        padding: 0;
    }
    
    .stat-card {
        break-inside: avoid;
    }
}