/*
 * =============================================
 * BookzCart — Component Styles
 * =============================================
 * Book cards, buttons, badges, forms, toast, modals
 */

/* =============================================
   1. Buttons
   ============================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--bkz-space-sm);
    padding: 0.65em 1.4em;
    font-weight: 600;
    font-size: var(--bkz-text-sm);
    letter-spacing: var(--bkz-tracking-wide);
    border-radius: var(--bkz-radius-md);
    transition: all var(--bkz-duration-normal) var(--bkz-ease-out);
    white-space: nowrap;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.08));
    opacity: 0;
    transition: opacity var(--bkz-duration-fast);
}

.btn:hover::after {
    opacity: 1;
}

.btn--primary {
    background: var(--bkz-accent);
    color: var(--bkz-accent-text);
}

.btn--primary:hover {
    background: var(--bkz-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--bkz-shadow-glow);
}

.btn--secondary {
    background: var(--bkz-ink-500);
    color: var(--bkz-parch-100);
    border: 1px solid var(--bkz-border);
}

.btn--secondary:hover {
    background: var(--bkz-ink-400);
    border-color: var(--bkz-amber-700);
}

.btn--ghost {
    background: transparent;
    color: var(--bkz-parch-200);
    padding: 0.5em 0.8em;
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--bkz-parch-50);
}

.btn--small {
    font-size: var(--bkz-text-xs);
    padding: 0.45em 1em;
}

.btn--large {
    font-size: var(--bkz-text-md);
    padding: 0.8em 2em;
}

.btn--icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--bkz-radius-full);
}

.btn:disabled,
.btn[aria-disabled="true"] {
    opacity: 0.4;
    pointer-events: none;
}

/* =============================================
   2. Book Card
   ============================================= */

.book-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--bkz-bg-card);
    border-radius: var(--bkz-radius-lg);
    overflow: hidden;
    border: 1px solid var(--bkz-border);
    transition: all var(--bkz-duration-normal) var(--bkz-ease-out);
}

.book-card:hover {
    background: var(--bkz-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--bkz-shadow-lg);
    border-color: var(--bkz-border-accent);
}

.book-card__image-wrap {
    position: relative;
    padding-top: 145%;
    background: var(--bkz-ink-700);
    overflow: hidden;
}

.book-card__image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--bkz-duration-slow) var(--bkz-ease-out);
}

.book-card:hover .book-card__image {
    transform: scale(1.05);
}

/* Placeholder gradient for books without images */
.book-card__image-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--bkz-space-lg);
    background: linear-gradient(145deg, var(--bkz-ink-600), var(--bkz-ink-500));
    font-family: var(--bkz-font-display);
    font-size: var(--bkz-text-md);
    color: var(--bkz-parch-300);
    text-align: center;
    line-height: var(--bkz-leading-snug);
}

.book-card__badges {
    position: absolute;
    top: var(--bkz-space-sm);
    right: var(--bkz-space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--bkz-space-xs);
    z-index: 2;
}

.book-card__actions {
    position: absolute;
    bottom: var(--bkz-space-sm);
    right: var(--bkz-space-sm);
    display: flex;
    gap: var(--bkz-space-xs);
    opacity: 0;
    transform: translateY(8px);
    transition: all var(--bkz-duration-normal) var(--bkz-ease-out);
    z-index: 2;
}

.book-card:hover .book-card__actions {
    opacity: 1;
    transform: translateY(0);
}

.book-card__action-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--bkz-radius-full);
    background: var(--bkz-ink-700);
    color: var(--bkz-parch-200);
    border: 1px solid var(--bkz-border);
    backdrop-filter: blur(8px);
    transition: all var(--bkz-duration-fast) var(--bkz-ease-out);
    cursor: pointer;
    font-size: 1rem;
}

.book-card__action-btn:hover {
    background: var(--bkz-accent);
    color: var(--bkz-accent-text);
    border-color: var(--bkz-accent);
}

.book-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--bkz-space-md);
    gap: var(--bkz-space-xs);
}

.book-card__author {
    font-size: var(--bkz-text-xs);
    color: var(--bkz-amber-400);
    font-weight: 500;
    letter-spacing: var(--bkz-tracking-wide);
}

.book-card__title {
    font-family: var(--bkz-font-display);
    font-size: var(--bkz-text-sm);
    font-weight: 600;
    line-height: var(--bkz-leading-snug);
    color: var(--bkz-parch-50);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-card__hook {
    font-size: var(--bkz-text-xs);
    color: var(--bkz-parch-400);
    font-style: italic;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--bkz-space-sm) var(--bkz-space-md) var(--bkz-space-md);
    margin-top: auto;
}

.book-card__price {
    display: flex;
    align-items: baseline;
    gap: var(--bkz-space-xs);
}

.book-card__price-current {
    font-size: var(--bkz-text-md);
    font-weight: 700;
    color: var(--bkz-parch-50);
}

.book-card__price-original {
    font-size: var(--bkz-text-xs);
    color: var(--bkz-ink-100);
    text-decoration: line-through;
}

.book-card__rating {
    display: flex;
    align-items: center;
    gap: 3px;
    font-size: var(--bkz-text-xs);
    color: var(--bkz-amber-400);
}

/* Horizontal card variant for featured */
.book-card--horizontal {
    flex-direction: row;
    min-height: 200px;
}

.book-card--horizontal .book-card__image-wrap {
    width: 140px;
    min-width: 140px;
    padding-top: 0;
    align-self: stretch;
}

.book-card--horizontal .book-card__body {
    justify-content: center;
}

/* =============================================
   3. Badge
   ============================================= */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: var(--bkz-tracking-caps);
    text-transform: uppercase;
    border-radius: var(--bkz-radius-sm);
    line-height: 1;
}

.badge--sale {
    background: var(--bkz-terra-500);
    color: white;
}

.badge--ebook {
    background: var(--bkz-sage-500);
    color: white;
}

.badge--featured {
    background: var(--bkz-amber-600);
    color: var(--bkz-ink-900);
}

.badge--new {
    background: var(--bkz-ink-400);
    color: var(--bkz-parch-100);
    border: 1px solid var(--bkz-border);
}

/* =============================================
   4. Mood Chip
   ============================================= */

.mood-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--bkz-space-sm);
    padding: var(--bkz-space-lg) var(--bkz-space-md);
    background: var(--bkz-bg-surface);
    border-radius: var(--bkz-radius-lg);
    border: 1px solid var(--bkz-border);
    text-align: center;
    cursor: pointer;
    transition: all var(--bkz-duration-normal) var(--bkz-ease-out);
    text-decoration: none;
    color: var(--bkz-text);
}

.mood-chip:hover {
    background: var(--bkz-bg-card-hover);
    border-color: var(--bkz-border-accent);
    transform: translateY(-2px);
    color: var(--bkz-parch-50);
}

.mood-chip__icon {
    font-size: 1.8rem;
    line-height: 1;
}

.mood-chip__name {
    font-size: var(--bkz-text-xs);
    font-weight: 600;
    letter-spacing: var(--bkz-tracking-wide);
}

.mood-chip__count {
    font-size: 0.65rem;
    color: var(--bkz-text-muted);
}

/* =============================================
   5. Collection Card
   ============================================= */

.collection-card {
    position: relative;
    border-radius: var(--bkz-radius-lg);
    overflow: hidden;
    background: var(--bkz-bg-card);
    border: 1px solid var(--bkz-border);
    transition: all var(--bkz-duration-normal) var(--bkz-ease-out);
    cursor: pointer;
    text-decoration: none;
    color: var(--bkz-text);
    display: block;
}

.collection-card:hover {
    border-color: var(--bkz-border-accent);
    transform: translateY(-4px);
    box-shadow: var(--bkz-shadow-lg);
    color: var(--bkz-text);
}

.collection-card__visual {
    height: 180px;
    background: linear-gradient(135deg, var(--bkz-ink-500), var(--bkz-ink-400));
    display: flex;
    align-items: flex-end;
    padding: var(--bkz-space-lg);
    position: relative;
    overflow: hidden;
}

.collection-card__visual::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(to top, var(--bkz-ink-700) 0%, transparent 60%);
    z-index: 1;
}

.collection-card__book-count {
    position: relative;
    z-index: 2;
    font-size: var(--bkz-text-xs);
    color: var(--bkz-amber-400);
    font-weight: 600;
    letter-spacing: var(--bkz-tracking-wide);
}

.collection-card__content {
    padding: var(--bkz-space-lg);
}

.collection-card__title {
    font-family: var(--bkz-font-display);
    font-size: var(--bkz-text-lg);
    font-weight: 600;
    color: var(--bkz-parch-50);
    margin-bottom: var(--bkz-space-sm);
}

.collection-card__essay {
    font-size: var(--bkz-text-sm);
    color: var(--bkz-parch-400);
    line-height: var(--bkz-leading-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* =============================================
   6. Forms
   ============================================= */

.input {
    width: 100%;
    padding: 0.7em 1em;
    background: var(--bkz-ink-700);
    border: 1px solid var(--bkz-border);
    border-radius: var(--bkz-radius-md);
    color: var(--bkz-parch-100);
    font-size: var(--bkz-text-base);
    transition: border-color var(--bkz-duration-fast) var(--bkz-ease-out),
        box-shadow var(--bkz-duration-fast) var(--bkz-ease-out);
}

.input::placeholder {
    color: var(--bkz-ink-100);
}

.input:focus {
    border-color: var(--bkz-amber-500);
    box-shadow: 0 0 0 3px rgba(200, 164, 90, 0.12);
}

/* =============================================
   7. Toast Notification
   ============================================= */

.toast-container {
    position: fixed;
    bottom: var(--bkz-space-xl);
    right: var(--bkz-space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--bkz-space-sm);
    z-index: var(--bkz-z-toast);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--bkz-space-sm);
    padding: var(--bkz-space-md) var(--bkz-space-lg);
    background: var(--bkz-ink-500);
    border: 1px solid var(--bkz-border);
    border-radius: var(--bkz-radius-md);
    color: var(--bkz-parch-100);
    font-size: var(--bkz-text-sm);
    font-weight: 500;
    box-shadow: var(--bkz-shadow-lg);
    pointer-events: all;
    animation: toastIn var(--bkz-duration-normal) var(--bkz-ease-spring) forwards;
    backdrop-filter: blur(16px);
}

.toast--success {
    border-left: 3px solid var(--bkz-sage-500);
}

.toast--error {
    border-left: 3px solid var(--bkz-error);
}

.toast--info {
    border-left: 3px solid var(--bkz-amber-500);
}

.toast--exiting {
    animation: toastOut var(--bkz-duration-fast) var(--bkz-ease-out) forwards;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }

    to {
        opacity: 0;
        transform: translateX(100px);
    }
}

/* =============================================
   8. Loading States
   ============================================= */

.skeleton {
    background: linear-gradient(90deg,
            var(--bkz-ink-600) 25%,
            var(--bkz-ink-500) 50%,
            var(--bkz-ink-600) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--bkz-radius-sm);
}

@keyframes shimmer {
    from {
        background-position: -200% 0;
    }

    to {
        background-position: 200% 0;
    }
}

.skeleton--card {
    border-radius: var(--bkz-radius-lg);
    overflow: hidden;
}

.skeleton--text {
    height: 1em;
    width: 80%;
}

.skeleton--text-sm {
    height: 0.75em;
    width: 60%;
}

.skeleton--image {
    padding-top: 145%;
}

/* =============================================
   9. Animations
   ============================================= */

.fade-in {
    animation: fadeIn var(--bkz-duration-slow) var(--bkz-ease-out) forwards;
}

.slide-up {
    animation: slideUp var(--bkz-duration-slow) var(--bkz-ease-out) forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stagger children animations */
.stagger>* {
    opacity: 0;
    animation: slideUp var(--bkz-duration-slow) var(--bkz-ease-out) forwards;
}

.stagger>*:nth-child(1) {
    animation-delay: 60ms;
}

.stagger>*:nth-child(2) {
    animation-delay: 120ms;
}

.stagger>*:nth-child(3) {
    animation-delay: 180ms;
}

.stagger>*:nth-child(4) {
    animation-delay: 240ms;
}

.stagger>*:nth-child(5) {
    animation-delay: 300ms;
}

.stagger>*:nth-child(6) {
    animation-delay: 360ms;
}

.stagger>*:nth-child(7) {
    animation-delay: 420ms;
}

.stagger>*:nth-child(8) {
    animation-delay: 480ms;
}