/**
 * RailBud - Responsive Styles
 * Mobile-first breakpoints and device-specific optimizations
 */

/* ========================================
   BREAKPOINT REFERENCE
   ----------------------------------------
   xs: 0 - 359px (small phones)
   sm: 360px - 479px (phones)
   md: 480px - 639px (large phones)
   lg: 640px - 767px (tablets)
   xl: 768px+ (desktop)
   ======================================== */

/* ========================================
   EXTRA SMALL DEVICES (< 360px)
   ======================================== */
@media (max-width: 359px) {
    :root {
        --container-padding: var(--space-3);
        --text-base: 0.75rem;
    }
    
    .section-title {
        font-size: var(--text-lg);
    }
    
    .section-desc {
        font-size: var(--text-xs);
    }
    
    .search-section {
        padding: var(--space-4);
    }
    
    .btn-search {
        padding: var(--space-3);
        font-size: var(--text-sm);
    }
    
    .route-card {
        padding: var(--space-3);
    }
    
    .journey-time {
        font-size: var(--text-md);
    }
    
    .train-number {
        font-size: var(--text-sm);
    }
    
    .alternate-header {
        padding: var(--space-2) var(--space-3);
    }
    
    .alternate-body {
        padding: var(--space-3);
    }
    
    .tabs {
        gap: var(--space-1);
        padding: 2px;
    }
    
    .tab {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-xs);
        gap: var(--space-1);
    }
    
    .tab span:not(.tab-badge) {
        display: none;
    }
}

/* ========================================
   SMALL DEVICES (360px - 479px)
   Default mobile styles - base case
   ======================================== */
@media (min-width: 360px) {
    /* Base mobile optimizations */
    .query-summary {
        flex-wrap: wrap;
    }
    
    .query-route {
        flex: 1 1 100%;
    }
    
    .query-date {
        flex: 0 0 auto;
    }
}

/* ========================================
   MEDIUM DEVICES (480px+)
   Large phones / small tablets
   ======================================== */
@media (min-width: 480px) {
    :root {
        --container-padding: var(--space-5);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .search-section {
        padding: var(--space-6);
    }
    
    /* Form grid - side by side on larger phones */
    .form-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
        gap: var(--space-4);
    }
    
    .form-grid > .form-group[data-field="from"] {
        grid-column: 1;
        grid-row: 1;
        padding-right: 0;
    }
    
    .form-grid > .form-group[data-field="to"] {
        grid-column: 2;
        grid-row: 1;
        padding-right: 0;
    }
    
    .form-grid > .form-group[data-field="date"] {
        grid-column: 1 / -1;
        grid-row: 2;
        margin-top: 0;
    }
    
    /* Swap button repositioned */
    .swap-btn {
        position: absolute;
        left: 50%;
        top: auto;
        bottom: auto;
        transform: translateX(-50%);
        top: calc(50% + 0.5rem);
        margin-top: 0;
    }
    
    /* Query summary inline */
    .query-summary {
        flex-wrap: nowrap;
    }
    
    .query-route {
        flex: 1 1 auto;
    }
    
    /* Larger touch targets */
    .route-card {
        padding: var(--space-5);
    }
    
    .journey-point {
        min-width: 4rem;
    }
    
    /* Status text visible */
    .status-text {
        display: inline;
    }
}

/* ========================================
   LARGE DEVICES (640px+)
   Tablets
   ======================================== */
@media (min-width: 640px) {
    :root {
        --header-height: 4rem;
        --max-width: 36rem;
    }
    
    .header-inner {
        padding: 0 var(--space-6);
    }
    
    .logo-icon {
        width: 2.25rem;
        height: 2.25rem;
    }
    
    .logo-icon [data-lucide] {
        width: 1.25rem;
        height: 1.25rem;
    }
    
    .logo-title {
        font-size: var(--text-lg);
    }
    
    .main {
        padding: var(--space-6) var(--container-padding);
    }
    
    .search-section {
        padding: var(--space-8);
        border-radius: var(--radius-2xl);
    }
    
    .section-header {
        margin-bottom: var(--space-6);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    /* Better button sizing */
    .btn-search {
        max-width: 20rem;
        margin-left: auto;
        margin-right: auto;
    }
    
    /* Tabs max width */
    .tabs {
        max-width: 20rem;
        margin-left: auto;
        margin-right: auto;
    }
    
    /* Larger cards */
    .route-card:hover {
        transform: translateY(-2px);
    }
    
    /* Modal centered */
    .modal-overlay {
        align-items: center;
        padding: var(--space-6);
    }
    
    .modal {
        position: relative;
        max-width: 28rem;
        max-height: 80vh;
        border-radius: var(--radius-2xl);
    }
    
    /* Toast positioning */
    .toast-container {
        left: auto;
        right: var(--space-6);
        max-width: 24rem;
    }
    
    /* Footer */
    .footer-inner {
        padding: 0 var(--space-6);
    }
}

/* ========================================
   EXTRA LARGE DEVICES (768px+)
   Desktop / Landscape tablets
   ======================================== */
@media (min-width: 768px) {
    :root {
        --max-width: 40rem;
        --container-padding: var(--space-6);
    }
    
    /* Better typography */
    body {
        font-size: var(--text-md);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    .section-desc {
        font-size: var(--text-md);
    }
    
    /* Search section */
    .search-section {
        padding: var(--space-10);
    }
    
    /* Form grid - 3 column layout */
    .form-grid {
        grid-template-columns: 1fr auto 1fr;
        grid-template-rows: auto auto;
        gap: var(--space-4);
        align-items: end;
    }
    
    .form-grid > .form-group[data-field="from"] {
        grid-column: 1;
        grid-row: 1;
    }
    
    .swap-btn {
        position: relative;
        left: auto;
        top: auto;
        bottom: auto;
        transform: none;
        grid-column: 2;
        grid-row: 1;
        margin-bottom: var(--space-1);
    }
    
    .form-grid > .form-group[data-field="to"] {
        grid-column: 3;
        grid-row: 1;
    }
    
    .form-grid > .form-group[data-field="date"] {
        grid-column: 1 / -1;
        grid-row: 2;
        max-width: 16rem;
        margin: 0 auto;
    }
    
    /* Better card hover effects */
    .route-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-lg);
    }
    
    .alternate-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-lg);
    }
    
    /* Class pills inline */
    .class-list {
        flex-wrap: wrap;
    }
    
    /* Modal larger */
    .modal {
        max-width: 32rem;
    }
    
    .modal-info-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   LARGE DESKTOP (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    :root {
        --max-width: 44rem;
    }
    
    /* Center content better */
    .main {
        padding: var(--space-8) var(--container-padding);
    }
    
    .search-section {
        box-shadow: var(--shadow-md);
    }
    
    /* Hover effects more pronounced */
    .btn-primary:hover:not(:disabled) {
        transform: translateY(-2px);
    }
}

/* ========================================
   HOVER MEDIA QUERY
   Only apply hover effects on hover-capable devices
   ======================================== */
@media (hover: hover) and (pointer: fine) {
    .route-card {
        cursor: pointer;
    }
    
    .suggestion-item:hover {
        background: var(--surface-secondary);
    }
    
    .recent-item:hover {
        transform: translateY(-1px);
    }
}

/* ========================================
   TOUCH DEVICES
   Optimizations for touch interfaces
   ======================================== */
@media (hover: none) and (pointer: coarse) {
    /* Larger touch targets */
    .form-input {
        min-height: 2.75rem;
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    .btn {
        min-height: 2.75rem;
    }
    
    .tab {
        min-height: 2.75rem;
    }
    
    .suggestion-item {
        min-height: 2.75rem;
    }
    
    .recent-item {
        min-height: 2.25rem;
    }
    
    /* Remove hover effects */
    .route-card:hover {
        transform: none;
        box-shadow: var(--card-shadow);
    }
    
    .alternate-card:hover {
        transform: none;
    }
    
    /* Active states instead */
    .route-card:active {
        transform: scale(0.98);
        opacity: 0.9;
    }
    
    .btn:active:not(:disabled) {
        transform: scale(0.98);
    }
    
    /* Disable text selection on interactive elements */
    .btn,
    .tab,
    .route-card,
    .alternate-card,
    .suggestion-item,
    .recent-item {
        user-select: none;
        -webkit-user-select: none;
    }
}

/* ========================================
   LANDSCAPE ORIENTATION (Mobile)
   ======================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .header {
        position: relative;
    }
    
    .state-section {
        padding: var(--space-4);
    }
    
    .state-icon {
        width: 3rem;
        height: 3rem;
        margin-bottom: var(--space-2);
    }
    
    .state-icon [data-lucide] {
        width: 1.5rem;
        height: 1.5rem;
    }
    
    .loading-visual {
        height: 3rem;
        margin-bottom: var(--space-2);
    }
    
    .skeleton-list {
        display: none;
    }
    
    .modal {
        max-height: 95vh;
    }
}

/* ========================================
   HIGH RESOLUTION DISPLAYS
   ======================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Thinner borders on retina */
    .form-input {
        border-width: 1px;
    }
    
    .card,
    .route-card,
    .alternate-card {
        border-width: 0.5px;
    }
}

/* ========================================
   DARK MODE SPECIFIC ADJUSTMENTS
   ======================================== */
@media (prefers-color-scheme: dark) {
    /* Auto dark mode adjustments if needed */
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .header,
    .footer,
    .search-section,
    .tabs,
    .btn,
    .modal-overlay,
    .toast-container,
    .app-loader,
    .recent-section {
        display: none !important;
    }
    
    .main {
        padding: 0;
        max-width: none;
    }
    
    .results-section {
        margin-top: 0;
    }
    
    .results-section.hidden {
        display: block !important;
    }
    
    .tab-panel {
        display: block !important;
    }
    
    .route-card,
    .alternate-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
        margin-bottom: 1rem;
    }
    
    .route-card:hover,
    .alternate-card:hover {
        transform: none;
        box-shadow: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    * {
        color: black !important;
        background: white !important;
    }
}

/* ========================================
   FORCED COLORS MODE (High Contrast)
   ======================================== */
@media (forced-colors: active) {
    .btn-primary {
        border: 2px solid currentColor;
    }
    
    .form-input:focus {
        outline: 3px solid currentColor;
    }
    
    .tab.active {
        border: 2px solid currentColor;
    }
    
    .badge {
        border: 1px solid currentColor;
    }
}

/* ========================================
   STANDALONE MODE (PWA)
   ======================================== */
@media (display-mode: standalone) {
    .header {
        padding-top: env(safe-area-inset-top);
    }
    
    .header-inner {
        height: calc(var(--header-height) + env(safe-area-inset-top));
        padding-top: env(safe-area-inset-top);
    }
}

/* ========================================
   NOTCH / DYNAMIC ISLAND SUPPORT
   ======================================== */
@supports (padding: max(0px)) {
    .header-inner {
        padding-left: max(var(--container-padding), env(safe-area-inset-left));
        padding-right: max(var(--container-padding), env(safe-area-inset-right));
    }
    
    .main {
        padding-left: max(var(--container-padding), env(safe-area-inset-left));
        padding-right: max(var(--container-padding), env(safe-area-inset-right));
    }
    
    .footer-inner {
        padding-left: max(var(--container-padding), env(safe-area-inset-left));
        padding-right: max(var(--container-padding), env(safe-area-inset-right));
    }
}

/* ========================================
   KEYBOARD NAVIGATION VISIBLE FOCUS
   ======================================== */
.js-focus-visible :focus:not(.focus-visible) {
    outline: none;
}

.js-focus-visible .focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* ========================================
   ANIMATION ADJUSTMENTS FOR PERFORMANCE
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    .route-card:hover,
    .alternate-card:hover,
    .btn:hover {
        transform: none;
    }
    
    .swap-btn:hover {
        transform: none;
    }
    
    .modal {
        animation: none;
    }
    
    .toast {
        animation: none;
    }
    
    .skeleton-card {
        animation: none;
        background: var(--skeleton-base);
    }
}

/* ========================================
   iOS SPECIFIC FIXES
   ======================================== */
@supports (-webkit-touch-callout: none) {
    /* Fix for iOS input zoom */
    input[type="text"],
    input[type="date"],
    input[type="search"] {
        font-size: 16px;
    }
    
    /* Fix for iOS momentum scrolling */
    .suggestions,
    .modal-body {
        -webkit-overflow-scrolling: touch;
    }
    
    /* Fix for iOS button styling */
    .btn {
        -webkit-appearance: none;
    }
    
    input[type="date"] {
        -webkit-appearance: none;
        appearance: none;
    }
}

/* ========================================
   ANDROID SPECIFIC FIXES
   ======================================== */
@supports not (-webkit-touch-callout: none) {
    /* Android-specific styles if needed */
    input[type="date"]::-webkit-calendar-picker-indicator {
        opacity: 0.7;
    }
}