/* Responsive Design */

/* Large Desktop */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-content h1 {
        font-size: 3.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Desktop */
@media (max-width: 1199px) {
    .container {
        max-width: 1000px;
    }
    
    .hero-content h1 {
        font-size: 2.8rem;
    }
}

/* Tablet */
@media (max-width: 768px) {
    .main-content {
        padding-top: 70px;
    }
    
    .navbar {
        height: 70px;
    }
    
    .nav-container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-brand {
        font-size: 1.25rem;
    }
    
    .nav-logo {
        width: 35px;
        height: 35px;
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .nav-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.875rem;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
        margin-bottom: var(--spacing-xl);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-content p {
        font-size: 1.125rem;
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .stat-card i {
        font-size: 2rem;
    }
    
    .stat-card h3 {
        font-size: 0.875rem;
    }
    
    .stat-card p {
        font-size: 1.5rem;
    }
    
    .devices-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--spacing-md);
    }
    
    .page {
        padding: var(--spacing-lg);
    }
    
    .page-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
        margin-bottom: var(--spacing-lg);
    }
    
    .device-form {
        margin: 0 var(--spacing-md);
        padding: var(--spacing-lg);
    }
    
    .device-detail {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .device-detail .device-photo {
        height: 150px;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .main-content {
        padding-top: 60px;
    }
    
    .navbar {
        height: 60px;
    }
    
    .nav-container {
        padding: 0 var(--spacing-xs);
    }
    
    .nav-brand {
        font-size: 1rem;
    }
    
    .nav-logo {
        width: 30px;
        height: 30px;
    }
    
    .nav-menu {
        gap: var(--spacing-xs);
    }
    
    .nav-btn {
        padding: var(--spacing-xs);
        font-size: 0.75rem;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
        border-radius: 0;
    }
    
    .hero-content h1 {
        font-size: 2rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-content p {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        padding: var(--spacing-md);
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-md);
        text-align: center;
    }
    
    .stat-card i {
        font-size: 1.75rem;
    }
    
    .stat-card h3 {
        font-size: 0.875rem;
    }
    
    .stat-card p {
        font-size: 1.25rem;
    }
    
    .devices-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .device-card {
        padding: var(--spacing-md);
    }
    
    .device-card-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .device-photo {
        width: 80px;
        height: 80px;
    }
    
    .device-actions {
        flex-direction: column;
    }
    
    .page {
        padding: var(--spacing-md);
    }
    
    .page-header {
        margin-bottom: var(--spacing-md);
    }
    
    .page-header h2 {
        font-size: 1.5rem;
    }
    
    .device-form {
        margin: 0;
        padding: var(--spacing-md);
        border-radius: 0;
        box-shadow: none;
        border-left: none;
        border-right: none;
    }
    
    .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: var(--spacing-md);
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .form-actions {
        flex-direction: column;
        margin-top: var(--spacing-lg);
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    .transaction-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .transaction-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    
    .toast-container {
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }
    
    .toast {
        padding: var(--spacing-sm);
    }
    
    .toast-icon {
        font-size: 1rem;
    }
    
    .toast-title {
        font-size: 0.875rem;
    }
    
    .toast-message {
        font-size: 0.75rem;
    }
}

/* Small Mobile */
@media (max-width: 360px) {
    .hero-content h1 {
        font-size: 1.75rem;
    }
    
    .hero-content p {
        font-size: 0.875rem;
    }
    
    .page {
        padding: var(--spacing-sm);
    }
    
    .device-form {
        padding: var(--spacing-sm);
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: var(--spacing-sm);
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: var(--spacing-md) 0;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-content h1 {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .hero-content p {
        font-size: 0.875rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-sm);
    }
    
    .stat-card i {
        font-size: 1.5rem;
    }
    
    .stat-card h3 {
        font-size: 0.75rem;
    }
    
    .stat-card p {
        font-size: 1.125rem;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .device-photo img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .hero-buttons,
    .device-actions,
    .form-actions,
    .toast-container,
    .loading-spinner {
        display: none !important;
    }
    
    .main-content {
        padding-top: 0;
    }
    
    .page {
        display: block !important;
        padding: 0;
    }
    
    .device-card,
    .transaction-item,
    .stat-card {
        break-inside: avoid;
        border: 1px solid #ccc;
        box-shadow: none;
    }
}