/* Desktop Styles (1200px and up) */
@media (min-width: 1200px) {
    .login-card {
        margin: auto auto auto 4rem;
        max-width: 450px;
    }
    
    .dashboard {
        max-width: 1400px;
        margin: 0 auto;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet Styles (768px to 1199px) */
@media (min-width: 768px) and (max-width: 1199px) {
    .login-card {
        margin: auto auto auto 3rem;
        max-width: 400px;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Styles (767px and below) */
@media (max-width: 767px) {
    .login-card {
        margin: auto 1rem;
        padding: 1.5rem;
        max-width: none;
    }
    
    .login-title {
        font-size: 2rem;
    }
    
    .dashboard {
        padding: 1rem;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .dashboard-title {
        font-size: 1.5rem;
    }
    
    .user-info {
        width: 100%;
        justify-content: space-between;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stats-filters {
        justify-content: center;
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-emoji {
        font-size: 1.5rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .chart-container {
        padding: 1rem;
    }
    
    .page-header {
        margin-bottom: 1rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .download-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .app-preview {
        margin: 1rem auto;
        padding: 1rem;
    }
    
    /* Utility classes for mobile */
    .mobile-hidden {
        display: none;
    }
    
    .mobile-full-width {
        width: 100%;
    }
    
    .mobile-center {
        text-align: center;
    }
    
    .mobile-stack {
        flex-direction: column;
    }
}

/* Small Mobile Styles (480px and below) */
@media (max-width: 480px) {
    .login-card {
        margin: 1rem 0.5rem;
        padding: 1rem;
    }
    
    .logo {
        font-size: 2.5rem;
    }
    
    .dashboard {
        padding: 0.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-filters {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .connection-item {
        padding: 0.75rem;
    }
    
    .connection-avatar {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .card-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .btn {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    .form-input {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
}

/* Landscape Phone Styles */
@media (max-width: 767px) and (orientation: landscape) {
    .login-page {
        padding: 1rem 0;
    }
    
    .login-card {
        margin: 1rem auto;
        max-height: calc(100vh - 2rem);
        overflow-y: auto;
    }
    
    .logo {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .loading-screen {
        padding: 1rem;
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2),
       (min-resolution: 192dpi) {
    .card-icon,
    .connection-avatar {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Dark Mode (if system preference changes) */
@media (prefers-color-scheme: dark) {
    /* Already dark by default, but can add overrides here */
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .pulse {
        animation: none;
    }
    
    .spinner {
        animation: none;
        border: 3px solid var(--primary);
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .login-page,
    #background-canvas,
    .loading-screen {
        display: none;
    }
    
    .dashboard,
    .statistics-page,
    .connections-page {
        display: block !important;
        padding: 1rem;
    }
    
    .btn,
    .logout-btn,
    .back-btn {
        display: none;
    }
    
    .card,
    .dashboard-card,
    .stat-card {
        border: 1px solid #ccc;
        box-shadow: none;
        page-break-inside: avoid;
    }
}