/* ═══════════════════════════════════════════════════════════════
   features.css — Toast, Sticky Bar, Zoom, Confetti, Transitions,
                  Skeleton Shimmer, Scroll-to-Top, Quick View
   ═══════════════════════════════════════════════════════════════ */

/* ── Toast Notification System ──────────────────────────────────── */
.toast-container {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    pointer-events: none;
    max-width: 380px;
    width: calc(100% - var(--space-8));
}

@media (min-width: 640px) {
    .toast-container {
        top: var(--space-6);
        right: var(--space-6);
    }
}

.toast {
    pointer-events: auto;
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    padding-right: var(--space-10);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--color-pink-400);
    overflow: hidden;
    transform: translateX(110%);
    opacity: 0;
    animation: toastSlideIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.toast.toast-exit {
    animation: toastSlideOut 0.3s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.toast-success { border-left-color: var(--color-success); }
.toast-error   { border-left-color: var(--color-danger); }
.toast-warning { border-left-color: var(--color-warning); }
.toast-info    { border-left-color: var(--color-info); }

.toast-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    line-height: 1;
    margin-top: 1px;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error   .toast-icon { color: var(--color-danger); }
.toast-warning .toast-icon { color: var(--color-warning); }
.toast-info    .toast-icon { color: var(--color-info); }

.toast-message {
    flex: 1;
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-text-primary);
    line-height: var(--leading-normal);
}

.toast-close {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    padding: 0;
}

.toast-close:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    border-radius: 0 0 0 var(--radius-md);
    animation: toastProgress linear forwards;
}

.toast-success .toast-progress { background: var(--color-success); }
.toast-error   .toast-progress { background: var(--color-danger); }
.toast-warning .toast-progress { background: var(--color-warning); }
.toast-info    .toast-progress { background: var(--color-info); }

@keyframes toastSlideIn {
    from { transform: translateX(110%); opacity: 0; }
    to   { transform: translateX(0);    opacity: 1; }
}

@keyframes toastSlideOut {
    from { transform: translateX(0);    opacity: 1; max-height: 200px; margin-bottom: 0; }
    to   { transform: translateX(110%); opacity: 0; max-height: 0;    margin-bottom: calc(var(--space-3) * -1); }
}

@keyframes toastProgress {
    from { width: 100%; }
    to   { width: 0%; }
}


/* ── Sticky Add-to-Cart Bar ─────────────────────────────────────── */
.sticky-add-to-cart {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--space-3) var(--space-4);
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(24px) saturate(1.6);
    -webkit-backdrop-filter: blur(24px) saturate(1.6);
    border-top: 2px solid transparent;
    border-image: linear-gradient(90deg, var(--color-pink-200), var(--color-pink-400), var(--color-pink-200)) 1;
    box-shadow: 0 -4px 24px rgba(255, 107, 157, 0.1);
    transform: translateY(100%);
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

html.dark-mode .sticky-add-to-cart {
    background: rgba(26, 16, 24, 0.78);
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.25);
}

.sticky-add-to-cart.sticky-bar-visible {
    transform: translateY(0);
    opacity: 1;
}

.sticky-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    max-width: var(--container-xl);
    margin: 0 auto;
}

.sticky-bar-info {
    flex: 1;
    min-width: 0;
}

.sticky-bar-name {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

@media (min-width: 640px) {
    .sticky-bar-name { max-width: 360px; font-size: var(--text-base); }
}

.sticky-bar-price {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: var(--weight-bold);
    color: var(--color-pink-500);
}

.sticky-bar-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: white;
    background: linear-gradient(135deg, var(--color-pink-500), var(--color-pink-400));
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(255, 107, 157, 0.25);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.sticky-bar-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 107, 157, 0.35);
}

.sticky-bar-btn:active {
    transform: translateY(0) scale(0.97);
}

@media (min-width: 640px) {
    .sticky-add-to-cart { padding: var(--space-4) var(--space-6); }
    .sticky-bar-btn { padding: var(--space-3) var(--space-8); font-size: var(--text-base); }
}


/* ── Image Zoom on Hover ────────────────────────────────────────── */
@media (hover: hover) and (pointer: fine) {
    .gallery-main {
        cursor: zoom-in;
    }

    .gallery-main img {
        transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
        will-change: transform;
    }

    .gallery-main img.zoomed {
        transform: scale(2);
        cursor: zoom-out;
    }
}


/* ── Confetti Canvas ────────────────────────────────────────────── */
.confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}


/* ── Page Transition Effects ────────────────────────────────────── */
.main-content {
    animation: pageEnter 0.2s ease-out both;
}

.main-content.page-exit {
    animation: pageExit 0.15s ease-in forwards;
}

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

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

@media (prefers-reduced-motion: reduce) {
    .main-content,
    .main-content.page-exit {
        animation: none !important;
        opacity: 1 !important;
    }
}


/* ── Skeleton Shimmer Enhancement ───────────────────────────────── */
.skeleton-shimmer {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
        90deg,
        rgba(255, 240, 245, 0)   0%,
        rgba(255, 240, 245, 0.6) 40%,
        rgba(255, 255, 255, 0.8) 50%,
        rgba(255, 240, 245, 0.6) 60%,
        rgba(255, 240, 245, 0)   100%
    );
    background-size: 200% 100%;
    animation: shimmerSweep 1.8s ease-in-out infinite;
    border-radius: inherit;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.lazy-img.loaded + .skeleton-shimmer {
    opacity: 0;
    pointer-events: none;
}

html.dark-mode .skeleton-shimmer {
    background: linear-gradient(
        90deg,
        rgba(42, 30, 40, 0)   0%,
        rgba(58, 42, 53, 0.6) 40%,
        rgba(70, 54, 65, 0.8) 50%,
        rgba(58, 42, 53, 0.6) 60%,
        rgba(42, 30, 40, 0)   100%
    );
    background-size: 200% 100%;
}

@keyframes shimmerSweep {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}


/* ── Scroll-to-Top Button ───────────────────────────────────────── */
.scroll-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-fixed);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-pink-500), var(--color-pink-400));
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(255, 107, 157, 0.3);
    opacity: 0;
    transform: translateY(16px) scale(0.8);
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
                box-shadow var(--transition-fast);
}

.scroll-to-top.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.scroll-to-top:hover {
    box-shadow: 0 6px 24px rgba(255, 107, 157, 0.4);
    transform: translateY(-2px) scale(1.05);
}

.scroll-to-top:active {
    transform: translateY(0) scale(0.95);
}

html.dark-mode .scroll-to-top {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* Push scroll-to-top above sticky bar when both visible */
.sticky-bar-visible ~ .scroll-to-top,
body:has(.sticky-bar-visible) .scroll-to-top {
    bottom: calc(var(--space-6) + 70px);
}


/* ── Quick View Modal ───────────────────────────────────────────── */
.qv-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: var(--color-overlay);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s cubic-bezier(0.22, 1, 0.36, 1),
                visibility 0.3s;
}

.qv-overlay.active {
    opacity: 1;
    visibility: visible;
}

.qv-modal {
    position: relative;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    transform: translateY(24px) scale(0.95);
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.qv-overlay.active .qv-modal {
    transform: translateY(0) scale(1);
}

.qv-close {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    z-index: 2;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    padding: 0;
}

html.dark-mode .qv-close {
    background: rgba(42, 30, 40, 0.8);
    border-color: rgba(255, 255, 255, 0.1);
}

.qv-close:hover {
    background: var(--color-pink-50);
    color: var(--color-pink-500);
}

.qv-body {
    display: flex;
    flex-direction: column;
}

@media (min-width: 640px) {
    .qv-body {
        flex-direction: row;
    }
}

.qv-img {
    flex-shrink: 0;
    aspect-ratio: 1;
    background: var(--color-cream-100);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 640px) {
    .qv-img {
        width: 260px;
        border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    }
}

.qv-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qv-info {
    flex: 1;
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.qv-info h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: var(--color-text-primary);
    line-height: var(--leading-tight);
}

.qv-condition {
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-pink-500);
    background: var(--color-pink-50);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    display: inline-block;
    width: fit-content;
}

.qv-condition:empty {
    display: none;
}

.qv-price-row {
    display: flex;
    align-items: baseline;
    gap: var(--space-3);
}

.qv-price {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--weight-bold);
    color: var(--color-pink-500);
}

.qv-original {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.qv-original:empty {
    display: none;
}

.qv-stock {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.qv-stock:empty {
    display: none;
}

.qv-view-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: auto;
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: white;
    background: linear-gradient(135deg, var(--color-pink-500), var(--color-pink-400));
    border-radius: var(--radius-full);
    text-decoration: none;
    text-align: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(255, 107, 157, 0.25);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.qv-view-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 107, 157, 0.35);
    color: white;
}


/* ── Add-to-Cart Flying Animation ───────────────────────────────── */
.flying-image {
    position: fixed;
    z-index: 10001;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    object-fit: cover;
    pointer-events: none;
    box-shadow: var(--shadow-md);
    transition: none;
}

.flying-image.fly {
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                width 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                height 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    width: 24px;
    height: 24px;
    opacity: 0.3;
}


/* ── Reduced motion overrides ───────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .toast {
        animation: none !important;
        transform: none !important;
        opacity: 1 !important;
    }
    .toast.toast-exit {
        display: none;
    }
    .toast-progress {
        animation: none !important;
    }
    .sticky-add-to-cart {
        transition: none !important;
    }
    .skeleton-shimmer {
        animation: none !important;
    }
    .scroll-to-top {
        transition: opacity 0.01ms !important;
        transform: none !important;
    }
    .scroll-to-top.visible {
        transform: none !important;
    }
    .qv-modal {
        transition: none !important;
        transform: none !important;
    }
    .flying-image,
    .flying-image.fly {
        transition: none !important;
    }
}