/* ==================== MOBILE & RESPONSIVE STYLES ==================== */

/* ==================== TABLET AND BELOW (900px) ==================== */

@media (max-width: 900px) {
    .container {
        max-width: 100vw;
        overflow-x: hidden;
    }

    .main-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        width: 100%;
    }

    .panel {
        padding: var(--spacing-lg);
        width: 100%;
        box-sizing: border-box;
        /* Reduce blur on tablet for performance */
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
    }

    h1 {
        font-size: 1.5rem;
    }

    /* Prevent overflow on charts and tables */
    .chart-container,
    .table-wrapper {
        max-width: 100%;
        overflow-x: auto;
    }

    /* Sub-navigation horizontal scroll */
    .sub-nav-group {
        flex-wrap: nowrap;
        justify-content: flex-start;
    }
}

/* ==================== MOBILE (640px) ==================== */

@media (max-width: 640px) {
    body {
        padding: var(--spacing-md);
        font-size: 16px;
        /* Lighter animation for mobile battery */
        animation-duration: 40s;
    }

    h1 {
        font-size: 1.25rem;
        letter-spacing: 1px;
        margin-bottom: var(--spacing-md);
        /* Reduce glow on mobile */
        text-shadow: 0 0 20px var(--accent-glow);
    }

    h2 {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
    }

    /* Navigation - Mobile Optimizations */
    .tab-group-header {
        padding: var(--spacing-xs);
        gap: var(--spacing-xs);
    }

    .tab-group-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.8rem;
        min-width: 80px;
        flex: 1;
    }

    .tab-icon {
        font-size: 1rem;
    }

    /* Sub-navigation - smooth horizontal scroll */
    .tab-sub-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .tab-sub-nav::-webkit-scrollbar {
        display: none;
    }

    .sub-nav-group {
        padding: var(--spacing-xs);
        gap: var(--spacing-xs);
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        justify-content: flex-start;
        touch-action: pan-x;
        /* Reduce blur on mobile */
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }

    .sub-nav-group::-webkit-scrollbar {
        display: none;
    }

    .sub-nav-pill {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.8rem;
        flex-shrink: 0;
        white-space: nowrap;
    }

    .sub-nav-pill span {
        font-size: 0.9rem;
    }

    .card-text {
        font-size: 0.85rem;
        margin-bottom: var(--spacing-lg);
    }

    /* Panel - reduce effects for mobile */
    .panel {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
        border-radius: var(--radius-lg);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }

    .panel:hover {
        transform: none; /* Disable hover lift on mobile */
        box-shadow: var(--glass-shadow);
    }

    /* Selector */
    .selector-button {
        font-size: 0.95rem;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .selector-icon {
        font-size: 1.2rem;
    }

    .selector-option {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 0.9rem;
    }

    .selector-option-icon {
        font-size: 1.2rem;
    }

    /* Touch-friendly inputs */
    .input-group input,
    .input-group textarea,
    .type-input input,
    .import-btn {
        min-height: 44px;
        font-size: 16px;
    }

    .input-group textarea {
        min-height: 100px;
    }

    /* Hide number spinners */
    .input-group input[type="number"],
    .type-input input[type="number"] {
        -moz-appearance: textfield;
    }

    .input-group input[type="number"]::-webkit-outer-spin-button,
    .input-group input[type="number"]::-webkit-inner-spin-button {
        -webkit-appearance: none;
        margin: 0;
    }

    .type-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    /* Larger slider thumb for mobile */
    .x-slider-row input[type="range"]::-webkit-slider-thumb {
        width: 28px;
        height: 28px;
    }

    .x-slider-row input[type="range"]::-moz-range-thumb {
        width: 28px;
        height: 28px;
    }

    .x-number {
        width: 60px !important;
        min-width: 60px;
        max-width: 60px;
        padding: var(--spacing-sm) var(--spacing-xs) !important;
    }

    /* Stack import row */
    .import-row,
    .import-url-row {
        flex-direction: column;
    }

    .import-row input,
    .import-btn,
    .import-url-row input,
    .import-url-row .import-btn {
        width: 100%;
        margin-right: 0;
    }

    .import-url-row .import-btn {
        margin-top: var(--spacing-sm);
    }

    /* Charts */
    .chart-container {
        height: 260px;
        margin-bottom: var(--spacing-md);
        position: relative;
    }

    .chart-container canvas {
        max-width: 100%;
        height: auto !important;
    }

    .chart-legend {
        gap: var(--spacing-md);
        font-size: 0.8rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .legend-item {
        gap: var(--spacing-xs);
        font-size: 0.75rem;
    }

    .legend-color {
        width: 12px;
        height: 12px;
        flex-shrink: 0;
    }

    /* Tables */
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 0 calc(var(--spacing-md) * -1);
        padding: 0 var(--spacing-md);
    }

    .comparison-table {
        font-size: 0.8rem;
        min-width: 100%;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-sm);
        white-space: nowrap;
        min-width: 60px;
    }

    .comparison-table th:first-child,
    .comparison-table td:first-child {
        position: sticky;
        left: 0;
        background: var(--bg-gradient-1);
        z-index: 1;
    }

    .mobile-hide {
        display: none;
    }

    /* Distribution chart */
    .dist-label {
        min-width: 60px;
        font-size: 0.85em;
    }

    .dist-row {
        gap: var(--spacing-sm);
    }

    .dist-value {
        width: 40px;
        font-size: 0.85em;
    }

    .dist-marker {
        font-size: 0.8em;
    }

    /* Big Spell Comparison Grid */
    .big-spell-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--spacing-sm);
    }

    .big-spell-card {
        padding: var(--spacing-sm);
    }

    .big-spell-title {
        font-size: 0.8em;
    }

    .big-spell-value {
        font-size: 1.5em;
    }

    .big-spell-x-value {
        font-size: 1em;
    }

    .big-spell-details,
    .big-spell-metric {
        font-size: 0.75em;
    }

    /* Stats grid */
    .stats-grid {
        gap: var(--spacing-sm);
    }

    .stat-card {
        padding: var(--spacing-sm);
    }

    .stat-card:hover {
        transform: none;
        box-shadow: none;
    }

    /* Pre blocks */
    pre {
        white-space: pre;
        overflow-x: auto;
        max-width: 100%;
        font-size: 0.7em;
        scrollbar-width: thin;
    }
}

/* ==================== SMALL MOBILE (375px) ==================== */

@media (max-width: 375px) {
    body {
        padding: var(--spacing-sm);
    }

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

    .type-input {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .type-input label {
        font-size: 0.8rem;
    }

    .type-input input {
        width: 44px;
        font-size: 0.85rem;
    }

    .comparison-table {
        font-size: 0.75rem;
        min-width: 450px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-xs);
        min-width: 50px;
    }

    .chart-container {
        height: 220px;
    }

    h1 {
        font-size: 1.1rem;
    }

    .card-text {
        font-size: 0.8rem;
    }

    .big-spell-grid {
        gap: var(--spacing-xs);
    }

    .big-spell-card {
        padding: var(--spacing-xs);
    }

    .tab-group-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.75rem;
        min-width: 70px;
    }

    .sub-nav-pill {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.75rem;
    }
}

/* ==================== LANDSCAPE MOBILE ==================== */

@media (max-width: 900px) and (orientation: landscape) {
    body {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    h1 {
        font-size: 1.25rem;
        margin-bottom: var(--spacing-xs);
    }

    .card-text {
        margin-bottom: var(--spacing-md);
    }

    .panel {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .chart-container {
        height: 200px;
    }

    .main-grid {
        gap: var(--spacing-md);
    }
}

/* ==================== HIGH DPI DISPLAYS ==================== */

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* ==================== REDUCED MOTION ==================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    body {
        animation: none !important;
    }

    .panel:hover {
        transform: none;
    }

    .stat-card:hover {
        transform: none;
    }
}

/* ==================== PRINT STYLES ==================== */

@media print {
    body {
        background: white;
        color: black;
        animation: none;
    }

    .tab-nav,
    .import-section,
    .tab-group-header,
    .tab-sub-nav,
    .icon-btn {
        display: none;
    }

    .panel {
        break-inside: avoid;
        border: 1px solid #ccc;
        box-shadow: none;
        backdrop-filter: none;
        background: white;
    }

    .chart-container {
        page-break-inside: avoid;
    }
}

/* ==================== TOUCH DEVICE OPTIMIZATIONS ==================== */

@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    .import-btn,
    input[type="number"],
    input[type="text"] {
        min-height: 44px;
        min-width: 44px;
    }

    /* Better slider thumb for touch */
    .x-slider-row input[type="range"]::-webkit-slider-thumb {
        width: 28px;
        height: 28px;
    }

    .x-slider-row input[type="range"]::-moz-range-thumb {
        width: 28px;
        height: 28px;
    }

    /* Remove hover effects on touch devices */
    .import-btn:hover {
        transform: none;
        box-shadow: 0 4px 12px var(--accent-glow);
    }

    .panel:hover {
        transform: none;
    }

    .stat-card:hover {
        transform: none;
    }

    /* Better touch feedback */
    .import-btn:active {
        opacity: 0.8;
        transform: scale(0.98);
    }

    /* Prevent text selection on UI elements */
    .import-btn,
    .panel h2,
    .legend-item,
    .collapse-btn,
    .tab-group-btn,
    .sub-nav-pill {
        -webkit-user-select: none;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
    }

    /* Smooth scrolling for touch */
    .table-wrapper,
    .chart-container,
    .sub-nav-group {
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
}

/* ==================== TABLET (768px - 1024px) ==================== */

@media (min-width: 768px) and (max-width: 1024px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }

    .main-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== SAFE AREA INSETS (Notch Support) ==================== */

@supports (padding: max(0px)) {
    body {
        padding-left: max(var(--spacing-lg), env(safe-area-inset-left));
        padding-right: max(var(--spacing-lg), env(safe-area-inset-right));
        padding-top: max(var(--spacing-lg), env(safe-area-inset-top));
        padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
    }
}

/* ==================== FOLDABLE DEVICES ==================== */

@media (min-width: 600px) and (max-width: 900px) and (min-height: 600px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}