/*
 * =============================================
 * BookzCart — Layout (Header, Nav, Footer)
 * =============================================
 */

/* =============================================
   1. Header / Navigation
   ============================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: var(--bkz-z-sticky);
    background: rgba(12, 12, 22, 0.85);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--bkz-border);
    transition: background var(--bkz-duration-normal);
}

.site-header--scrolled {
    background: rgba(12, 12, 22, 0.95);
    box-shadow: var(--bkz-shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    height: var(--bkz-header-height);
    gap: var(--bkz-space-xl);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--bkz-space-sm);
    text-decoration: none;
    flex-shrink: 0;
}

.logo__mark {
    width: 32px;
    height: 32px;
    background: var(--bkz-accent);
    border-radius: var(--bkz-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--bkz-font-display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--bkz-ink-900);
    transition: transform var(--bkz-duration-normal) var(--bkz-ease-spring);
}

.logo:hover .logo__mark {
    transform: rotate(-6deg) scale(1.08);
}

.logo__text {
    font-family: var(--bkz-font-display);
    font-size: var(--bkz-text-lg);
    font-weight: 700;
    color: var(--bkz-parch-50);
    letter-spacing: var(--bkz-tracking-tight);
}

.logo__text span {
    color: var(--bkz-amber-500);
}

/* Desktop navigation */
.nav-main {
    display: none;
    align-items: center;
    gap: var(--bkz-space-xs);
}

@media (min-width: 768px) {
    .nav-main {
        display: flex;
    }
}

.nav-link {
    padding: var(--bkz-space-sm) var(--bkz-space-md);
    font-size: var(--bkz-text-sm);
    font-weight: 500;
    color: var(--bkz-parch-300);
    border-radius: var(--bkz-radius-md);
    transition: all var(--bkz-duration-fast) var(--bkz-ease-out);
    text-decoration: none;
    white-space: nowrap;
}

.nav-link:hover,
.nav-link--active {
    color: var(--bkz-parch-50);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link--active {
    color: var(--bkz-amber-400);
}

/* Search bar in header */
.header-search {
    flex: 1;
    max-width: 400px;
    position: relative;
    display: none;
}

@media (min-width: 640px) {
    .header-search {
        display: block;
    }
}

.header-search__input {
    width: 100%;
    padding: 0.55em 1em 0.55em 2.5em;
    background: var(--bkz-ink-700);
    border: 1px solid var(--bkz-border);
    border-radius: var(--bkz-radius-full);
    color: var(--bkz-parch-100);
    font-size: var(--bkz-text-sm);
    transition: all var(--bkz-duration-fast) var(--bkz-ease-out);
}

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

.header-search__input:focus {
    border-color: var(--bkz-amber-600);
    background: var(--bkz-ink-600);
    box-shadow: 0 0 0 3px rgba(200, 164, 90, 0.1);
}

.header-search__icon {
    position: absolute;
    left: 0.9em;
    top: 50%;
    transform: translateY(-50%);
    color: var(--bkz-ink-100);
    pointer-events: none;
    font-size: 0.9rem;
}

/* Search results dropdown */
.search-results {
    position: absolute;
    top: calc(100% + var(--bkz-space-sm));
    left: 0;
    right: 0;
    background: var(--bkz-ink-600);
    border: 1px solid var(--bkz-border);
    border-radius: var(--bkz-radius-lg);
    box-shadow: var(--bkz-shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    display: none;
    z-index: var(--bkz-z-dropdown);
}

.search-results--open {
    display: block;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--bkz-space-md);
    padding: var(--bkz-space-md);
    text-decoration: none;
    color: var(--bkz-text);
    transition: background var(--bkz-duration-fast);
    border-bottom: 1px solid var(--bkz-border);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: var(--bkz-ink-500);
}

.search-result-item__image {
    width: 40px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--bkz-radius-sm);
    background: var(--bkz-ink-700);
    flex-shrink: 0;
}

.search-result-item__title {
    font-size: var(--bkz-text-sm);
    font-weight: 600;
    color: var(--bkz-parch-50);
}

.search-result-item__author {
    font-size: var(--bkz-text-xs);
    color: var(--bkz-amber-400);
}

/* Header actions (cart, wishlist, user) */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--bkz-space-xs);
    margin-left: auto;
}

.header-action {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--bkz-radius-full);
    color: var(--bkz-parch-300);
    transition: all var(--bkz-duration-fast) var(--bkz-ease-out);
    cursor: pointer;
    font-size: 1.15rem;
    text-decoration: none;
}

.header-action:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--bkz-parch-50);
}

.header-action__badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bkz-amber-500);
    color: var(--bkz-ink-900);
    font-size: 0.6rem;
    font-weight: 700;
    border-radius: var(--bkz-radius-full);
    line-height: 1;
}

.header-action__badge:empty {
    display: none;
}

/* Mobile menu toggle */
.menu-toggle {
    display: flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: var(--bkz-parch-200);
    font-size: 1.3rem;
    cursor: pointer;
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
}

/* Mobile nav */
.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: var(--bkz-z-overlay);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--bkz-duration-normal);
}

.mobile-nav--open {
    pointer-events: all;
    opacity: 1;
}

.mobile-nav__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
}

.mobile-nav__panel {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 300px;
    max-width: 85vw;
    background: var(--bkz-ink-700);
    padding: var(--bkz-space-xl);
    transform: translateX(-100%);
    transition: transform var(--bkz-duration-normal) var(--bkz-ease-out);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--bkz-space-lg);
}

.mobile-nav--open .mobile-nav__panel {
    transform: translateX(0);
}

.mobile-nav__close {
    align-self: flex-end;
    font-size: 1.5rem;
    color: var(--bkz-parch-300);
    cursor: pointer;
}

.mobile-nav__link {
    display: block;
    padding: var(--bkz-space-md) 0;
    font-size: var(--bkz-text-lg);
    font-family: var(--bkz-font-display);
    color: var(--bkz-parch-200);
    text-decoration: none;
    border-bottom: 1px solid var(--bkz-border);
    transition: color var(--bkz-duration-fast);
}

.mobile-nav__link:hover {
    color: var(--bkz-amber-400);
}

/* Mobile search */
.mobile-search {
    display: block;
    padding: var(--bkz-space-sm) var(--bkz-gutter);
    background: var(--bkz-ink-700);
    border-bottom: 1px solid var(--bkz-border);
}

@media (min-width: 640px) {
    .mobile-search {
        display: none;
    }
}

/* =============================================
   2. Footer
   ============================================= */

.site-footer {
    background: var(--bkz-ink-900);
    border-top: 1px solid var(--bkz-border);
    padding-block: var(--bkz-space-4xl) var(--bkz-space-2xl);
    margin-top: var(--bkz-space-4xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--bkz-space-2xl);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--bkz-space-xl);
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

.footer-brand {
    max-width: 320px;
}

.footer-brand__text {
    font-size: var(--bkz-text-sm);
    color: var(--bkz-parch-400);
    line-height: var(--bkz-leading-relaxed);
    margin-top: var(--bkz-space-md);
}

.footer-col__title {
    font-size: var(--bkz-text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--bkz-tracking-caps);
    color: var(--bkz-amber-500);
    margin-bottom: var(--bkz-space-lg);
}

.footer-col__link {
    display: block;
    padding: var(--bkz-space-xs) 0;
    font-size: var(--bkz-text-sm);
    color: var(--bkz-parch-400);
    text-decoration: none;
    transition: color var(--bkz-duration-fast);
}

.footer-col__link:hover {
    color: var(--bkz-parch-100);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--bkz-space-2xl);
    padding-top: var(--bkz-space-xl);
    border-top: 1px solid var(--bkz-border);
    font-size: var(--bkz-text-xs);
    color: var(--bkz-ink-100);
    flex-wrap: wrap;
    gap: var(--bkz-space-sm);
}

/* =============================================
   3. Main content area
   ============================================= */

.site-main {
    min-height: calc(100vh - var(--bkz-header-height));
}

/* =============================================
   4. Mini Cart Drawer
   ============================================= */

.cart-drawer {
    position: fixed;
    inset: 0;
    z-index: var(--bkz-z-overlay);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--bkz-duration-normal);
}

.cart-drawer--open {
    pointer-events: all;
    opacity: 1;
}

.cart-drawer__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.cart-drawer__panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 380px;
    max-width: 90vw;
    background: var(--bkz-ink-700);
    border-left: 1px solid var(--bkz-border);
    transform: translateX(100%);
    transition: transform var(--bkz-duration-normal) var(--bkz-ease-out);
    display: flex;
    flex-direction: column;
}

.cart-drawer--open .cart-drawer__panel {
    transform: translateX(0);
}

.cart-drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--bkz-space-lg);
    border-bottom: 1px solid var(--bkz-border);
}

.cart-drawer__title {
    font-family: var(--bkz-font-display);
    font-size: var(--bkz-text-lg);
    font-weight: 600;
}

.cart-drawer__close {
    font-size: 1.4rem;
    color: var(--bkz-parch-300);
    cursor: pointer;
    transition: color var(--bkz-duration-fast);
}

.cart-drawer__close:hover {
    color: var(--bkz-parch-50);
}

.cart-drawer__items {
    flex: 1;
    overflow-y: auto;
    padding: var(--bkz-space-lg);
}

.cart-drawer__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: var(--bkz-space-md);
    color: var(--bkz-text-muted);
    text-align: center;
}

.cart-drawer__empty-icon {
    font-size: 3rem;
    opacity: 0.3;
}

.cart-drawer__footer {
    padding: var(--bkz-space-lg);
    border-top: 1px solid var(--bkz-border);
    display: flex;
    flex-direction: column;
    gap: var(--bkz-space-md);
}

.cart-drawer__total {
    display: flex;
    justify-content: space-between;
    font-size: var(--bkz-text-md);
    font-weight: 700;
}

/* Cart item */
.cart-item {
    display: flex;
    gap: var(--bkz-space-md);
    padding: var(--bkz-space-md) 0;
    border-bottom: 1px solid var(--bkz-border);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item__image {
    width: 56px;
    height: 78px;
    object-fit: cover;
    border-radius: var(--bkz-radius-sm);
    background: var(--bkz-ink-600);
    flex-shrink: 0;
}

.cart-item__info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cart-item__title {
    font-size: var(--bkz-text-sm);
    font-weight: 600;
    color: var(--bkz-parch-50);
}

.cart-item__author {
    font-size: var(--bkz-text-xs);
    color: var(--bkz-amber-400);
}

.cart-item__price {
    font-size: var(--bkz-text-sm);
    font-weight: 600;
    margin-top: auto;
}

.cart-item__remove {
    font-size: var(--bkz-text-xs);
    color: var(--bkz-ink-100);
    cursor: pointer;
    align-self: flex-start;
    transition: color var(--bkz-duration-fast);
}

.cart-item__remove:hover {
    color: var(--bkz-error);
}