/* Responsive Styles */

/* ============================================
   Mobile (< 768px)
   ============================================ */
@media (max-width: 767px) {
    :root {
        --header-height: 48px;
        --list-width: calc(100vw - 32px);
    }

    /* Login */
    .login__card {
        padding: var(--space-lg);
    }

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

    /* Gallery */
    .gallery {
        padding: var(--space-md);
    }

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

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

    /* Header */
    .header {
        padding: 0 var(--space-sm);
    }

    .header__title {
        font-size: var(--font-md);
    }

    .header__save-status {
        display: none;
    }

    /* Board */
    .board {
        padding: var(--space-sm);
    }

    .board__canvas {
        gap: var(--space-sm);
        scroll-snap-type: x mandatory;
    }

    .board__list-wrapper {
        scroll-snap-align: center;
    }

    /* List */
    .list {
        max-height: calc(100vh - var(--header-height) - 60px);
    }

    /* Modal */
    .modal-backdrop {
        padding: 0;
        align-items: flex-end;
    }

    .modal {
        max-width: 100%;
        max-height: 90vh;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    /* Toast */
    .toast-container {
        left: var(--space-md);
        right: var(--space-md);
        bottom: var(--space-md);
    }

    .toast {
        min-width: auto;
        max-width: 100%;
    }

    /* Dropdown */
    .dropdown-menu {
        position: fixed;
        left: var(--space-md) !important;
        right: var(--space-md) !important;
        bottom: var(--space-md) !important;
        top: auto !important;
        max-width: none;
        border-radius: var(--radius-lg);
    }

    /* Folder Panel - Bottom sheet on mobile */
    .folder-panel {
        top: auto;
        bottom: -100vh;
        right: 0;
        left: 0;
        width: 100%;
        max-width: 100%;
        height: 85vh;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        transition: bottom 0.2s ease;
    }

    .folder-panel--visible {
        right: 0;
        bottom: 0;
    }

    /* Zoom Toggle Button */
    .board__zoom-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        position: fixed;
        bottom: var(--space-lg);
        right: var(--space-lg);
        width: 48px;
        height: 48px;
        border-radius: var(--radius-full);
        background: var(--color-surface);
        color: var(--color-primary);
        font-size: 20px;
        box-shadow: var(--shadow-lg);
        z-index: var(--z-sticky);
        border: 2px solid var(--color-primary);
        transition: transform var(--transition-fast), background-color var(--transition-fast);
    }

    .board__zoom-toggle:active {
        transform: scale(0.92);
    }

    .board__zoom-toggle--active {
        background: var(--color-primary);
        color: white;
    }

    /* Zoomed-out board state */
    .board--zoomed-out {
        overflow-x: auto;
        overflow-y: auto;
    }

    .board--zoomed-out .board__canvas {
        scroll-snap-type: none;
    }

    .board--zoomed-out .board__list-wrapper {
        width: 140px;
        scroll-snap-align: none;
    }

    .board--zoomed-out .board__new-list {
        width: 140px;
    }

    .board--zoomed-out .list {
        max-height: 50vh;
        font-size: var(--font-xs);
    }

    .board--zoomed-out .list__header {
        padding: var(--space-xs);
    }

    .board--zoomed-out .list__title {
        font-size: 10px;
    }

    .board--zoomed-out .list__items {
        padding: var(--space-xs);
        min-height: 40px;
    }

    .board--zoomed-out .list__items:empty {
        min-height: 40px;
    }

    .board--zoomed-out .item {
        padding: 3px 6px;
        margin-bottom: 3px;
    }

    .board--zoomed-out .item__title {
        font-size: 9px;
        line-height: 1.2;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .board--zoomed-out .item__indicators {
        display: none;
    }

    .board--zoomed-out .list__footer {
        display: none;
    }

    .board--zoomed-out .list__menu {
        font-size: 10px;
        padding: 2px;
    }

    .board--zoomed-out .new-list-btn {
        font-size: 10px;
        padding: var(--space-sm);
    }

    /* Always show folder delete button on mobile (no hover) */
    .item__folder-menu-btn {
        opacity: 1;
    }
}

/* ============================================
   Tablet (768px - 1024px)
   ============================================ */
@media (min-width: 768px) and (max-width: 1023px) {
    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   Desktop (>= 1024px)
   ============================================ */
@media (min-width: 1024px) {
    .gallery__grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

/* ============================================
   Touch Device Optimizations
   ============================================ */
@media (hover: none) {
    /* Show menu buttons always on touch devices */
    .dashboard-card__menu {
        opacity: 1;
    }

    /* Larger touch targets */
    .btn {
        min-height: 44px;
    }

    .list__add-item {
        min-height: 44px;
    }

    .dropdown-menu__item {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Disable hover effects */
    .dashboard-card:hover {
        transform: none;
    }

    .item:hover {
        background: var(--color-surface);
    }
}

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

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .header,
    .toast-container,
    .modal-backdrop {
        display: none !important;
    }

    .board {
        background: white;
        height: auto;
        overflow: visible;
    }

    .board__canvas {
        flex-wrap: wrap;
    }

    .list {
        break-inside: avoid;
        max-height: none;
    }
}