/* ==========================================
   MUSIC MASTER PRO HUB - RESPONSIVE STYLES
   Mobile-First Responsive Design
   ========================================== */

/* Mobile First Approach - Base styles are for mobile */

/* Tablet Styles (768px and up) */
@media (max-width: 768px) {
    
    /* Navigation */
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-menu.active {
        display: flex;
    }
    
    /* Hero Section */
    .hero {
        padding: 100px 0 var(--spacing-2xl);
        min-height: auto;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    /* Apps Grid */
    .apps-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: var(--spacing-md);
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }
    
    .app-card {
        padding: var(--spacing-md);
        margin: 0;
        height: 320px;
    }
    
    .app-icon {
        width: 55px;
        height: 55px;
        font-size: var(--font-size-xl);
    }
    
    .app-title {
        font-size: var(--font-size-xl);
    }
    
    .app-description {
        font-size: var(--font-size-sm);
    }
    
    /* About Section */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .about-feature {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .stat-number {
        font-size: var(--font-size-3xl);
    }
    
    /* Contact Methods */
    .contact-methods {
        grid-template-columns: 1fr;
    }
    
    .contact-method {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .method-content {
        text-align: center;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .footer-brand {
        justify-content: center;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

/* Mobile Styles (480px and below) */
@media (max-width: 480px) {
    
    /* Typography adjustments */
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.375rem;
    }
    
    /* Container padding */
    .hero-container,
    .apps-container,
    .about-container,
    .contact-container,
    .footer-container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Hero Section */
    .hero {
        padding: 90px 0 var(--spacing-xl);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* App Preview */
    .hero-app-preview {
        max-width: 300px;
    }
    
    .app-content {
        padding: var(--spacing-md);
    }
    
    .piano-keys {
        height: 60px;
    }
    
    .chord {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-base);
        min-width: 50px;
    }
    
    /* App Cards */
    .apps-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-sm);
    }
    
    .app-card {
        padding: var(--spacing-md);
        margin: 0;
        height: 280px;
    }
    
    .app-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-lg);
    }
    
    .app-title {
        font-size: var(--font-size-lg);
    }
    
    .app-description {
        font-size: var(--font-size-sm);
    }
    
    .app-features {
        gap: 0.3rem;
    }
    
    .feature-tag {
        font-size: var(--font-size-xs);
        padding: 0.3rem 0.5rem;
    }
    
    /* Stats Grid */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: var(--font-size-2xl);
    }
    
    /* Contact */
    .contact-method {
        padding: var(--spacing-md);
    }
    
    .method-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    /* Footer */
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-md);
    }
    
    .footer-brand {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    /* Navigation adjustments */
    .nav-container {
        height: 60px;
    }
    
    .nav-logo {
        width: 35px;
        height: 35px;
    }
    
    .nav-text h1 {
        font-size: var(--font-size-base);
    }
    
    .nav-subtitle {
        font-size: var(--font-size-xs);
    }
}

/* Large Desktop (1400px and up) */
@media (min-width: 1400px) {
    
    .hero-container,
    .apps-container,
    .about-container,
    .contact-container,
    .footer-container {
        max-width: 1400px;
    }
    
    .hero-container {
        gap: var(--spacing-3xl);
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3.5rem;
    }
    
    .app-card {
        padding: var(--spacing-2xl);
    }
}

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

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --text-light: #888888;
        --gray-100: #404040;
        --gray-200: #4a4a4a;
        --gray-300: #606060;
    }
    
    .navbar {
        background: rgba(26, 26, 26, 0.95);
        border-bottom-color: var(--gray-200);
    }
    
    .app-window {
        background: var(--bg-secondary);
        border-color: var(--gray-200);
    }
    
    .app-header {
        background: var(--gray-100);
        border-bottom-color: var(--gray-200);
    }
    
    .key.white {
        background: #f0f0f0;
    }
    
    .app-card,
    .stat-card,
    .contact-method {
        background: var(--bg-secondary);
        border-color: var(--gray-200);
    }
    
    .feature-tag,
    .roadmap-item {
        background: var(--gray-100);
        color: var(--text-secondary);
    }
}

/* Print Styles */
@media print {
    
    .navbar,
    .mobile-menu-btn,
    .mobile-menu,
    .hero-visual,
    .contact-methods,
    .footer {
        display: none !important;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
        min-height: auto;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
    }
    
    .apps,
    .about,
    .contact {
        padding: var(--spacing-lg) 0;
    }
    
    .app-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
    
    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: var(--font-size-xs);
        color: var(--text-light);
    }
}

/* Focus Styles for Accessibility */
.btn:focus,
.nav-link:focus,
.mobile-link:focus,
.contact-method:focus,
.app-card:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.app-card:focus {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255, 136, 0, 0.25);
}

/* App Card Active State */
.app-card:active {
    transform: translateY(-2px);
    transition: transform 0.1s ease;
}

/* Improved hover states */
.app-card .btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Ensure card content doesn't interfere with click */
.app-card-content,
.app-preview,
.app-features {
    pointer-events: none;
}

.app-card-actions {
    pointer-events: auto;
}

.app-card-actions .btn {
    pointer-events: auto;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    
    :root {
        --primary-color: #ff4500;
        --primary-dark: #cc3600;
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    }
    
    .btn-outline {
        border-width: 3px;
    }
    
    .app-card {
        border-width: 2px;
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Intersection Observer Animations */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

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

.slide-down {
    animation: slideDown 0.3s ease-out;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading .btn {
    position: relative;
}

.loading .btn::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ========================================
   GALLERY RESPONSIVE STYLES
======================================== */

@media (max-width: 768px) {
    .app-gallery {
        max-width: 100%;
        margin-top: 2rem;
    }

    .gallery-container {
        height: 250px;
        border-radius: 15px;
    }

    .screenshot img {
        border-radius: 13px;
    }

    .gallery-dots {
        gap: 8px;
        margin-top: 15px;
    }

    .dot {
        width: 10px;
        height: 10px;
    }

    /* Modal Responsive */
    .modal-overlay {
        padding: var(--spacing-sm);
    }

    .modal-header {
        padding: var(--spacing-lg);
    }

    .modal-content {
        padding: var(--spacing-lg);
    }

    .modal-gallery-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .modal-image-container {
        aspect-ratio: 16/9;
    }

    .modal-thumbnails {
        grid-column: 1 / -1;
        order: 3;
    }

    .modal-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .modal-actions .btn {
        width: 100%;
        min-width: auto;
    }

    .nav-btn {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    .gallery-container {
        height: 220px;
        border-radius: 12px;
    }

    .screenshot img {
        border-radius: 10px;
    }

    .gallery-dots {
        gap: 6px;
        margin-top: 12px;
    }

    .dot {
        width: 8px;
        height: 8px;
    }

    /* Modal Mobile */
    .modal-header {
        padding: var(--spacing-md);
    }

    .modal-content {
        padding: var(--spacing-md);
    }

    .modal-title {
        font-size: var(--font-size-xl);
    }

    .modal-image-description {
        padding: var(--spacing-md);
    }

    .modal-thumbnails {
        padding: var(--spacing-sm);
    }

    .modal-thumbnail {
        width: 80px;
        height: 50px;
    }

    .nav-btn {
        width: 35px;
        height: 35px;
        font-size: var(--font-size-sm);
    }
}