/* ==========================================================================
   Header Styles — Mohtaway
   ========================================================================== */

/* ── Reading Progress Bar ── */
.reading-progress {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: 3px;
    z-index: 1001;
    background: transparent;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition);
}

.reading-progress.active {
    opacity: 1;
}

.reading-progress__bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width 50ms linear;
    border-radius: 0 0 0 2px;
}

/* ── Site Header ── */
.site-header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: transform var(--transition), box-shadow var(--transition);
    will-change: transform;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

body.admin-bar .site-header { top: 32px; }
@media screen and (max-width: 782px) { body.admin-bar .site-header { top: 46px; } }

.site-header.scrolled {
    box-shadow: var(--shadow-header);
}

.site-header.hidden {
    transform: translateY(-100%);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: var(--space-lg);
}

/* ── Logo ── */
.site-header__logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    transition: opacity var(--transition-fast);
}

.site-header__logo:hover {
    opacity: 0.8;
    color: inherit;
}

.site-header__logo img {
    height: 36px;
    width: auto;
}

.site-header__logo-text {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

/* ── Navigation ── */
.site-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.site-nav__list li {
    position: relative;
}

.site-nav__list > li > a {
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    color: var(--color-text-secondary);
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.site-nav__list > li > a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition);
    border-radius: 1px;
}

.site-nav__list > li > a:hover,
.site-nav__list > li.current-menu-item > a {
    color: var(--color-primary);
}

.site-nav__list > li > a:hover::after,
.site-nav__list > li.current-menu-item > a::after {
    width: 100%;
}

/* Dropdown */
.site-nav__list .sub-menu {
    position: absolute;
    top: 100%;
    right: 50%;
    transform: translateX(50%) translateY(8px);
    min-width: 200px;
    background: var(--color-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm) 0;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 100;
}

.site-nav__list li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(50%) translateY(0);
}

.site-nav__list .sub-menu li a {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--fs-sm);
    color: var(--color-text);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.site-nav__list .sub-menu li a:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

/* ── Header Actions ── */
.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.site-header__search-btn,
.site-header__menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.site-header__search-btn:hover,
.site-header__menu-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

/* Hamburger */
.site-header__menu-btn {
    display: none;
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 20px;
}

.hamburger span {
    display: block;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: all var(--transition);
    transform-origin: center;
}

.site-header__menu-btn[aria-expanded="true"] .hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.site-header__menu-btn[aria-expanded="true"] .hamburger span:nth-child(2) {
    opacity: 0;
}

.site-header__menu-btn[aria-expanded="true"] .hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ── Search Modal ── */
.search-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.search-modal__overlay {
    position: absolute;
    inset: 0;
    background: var(--color-overlay);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.search-modal__content {
    position: relative;
    max-width: 680px;
    width: 90%;
    margin: 120px auto 0;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px) scale(0.95);
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
}

.search-modal.active .search-modal__content {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.search-modal__header {
    display: flex;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.search-modal__form {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.search-modal__icon {
    flex-shrink: 0;
    color: var(--color-text-secondary);
}

.search-modal__input {
    flex: 1;
    font-size: var(--fs-lg);
    padding: var(--space-sm) 0;
    background: transparent;
}

.search-modal__input::placeholder {
    color: var(--color-text-light);
}

.search-modal__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    margin-right: var(--space-md);
}

.search-modal__close:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.search-modal__results {
    padding: var(--space-lg);
    max-height: 400px;
    overflow-y: auto;
}

.search-modal__hint {
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--fs-sm);
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius);
    transition: background var(--transition-fast);
    text-decoration: none;
}

.search-result-item:hover {
    background: var(--color-bg-alt);
}

.search-result-item__thumb {
    width: 60px;
    height: 42px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}

.search-result-item__info {
    flex: 1;
    min-width: 0;
}

.search-result-item__cat {
    font-size: var(--fs-xs);
    color: var(--color-primary);
    font-weight: var(--fw-medium);
    margin-bottom: 2px;
}

.search-result-item__title {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── Mobile Navigation ── */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-overlay);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

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

.mobile-nav {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    max-width: 80vw;
    height: 100vh;
    background: var(--color-bg);
    z-index: 1600;
    overflow-y: auto;
    transition: right var(--transition);
    box-shadow: var(--shadow-lg);
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.mobile-nav__logo {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--color-primary);
}

.mobile-nav__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.mobile-nav__close:hover {
    background: var(--color-bg-alt);
}

.mobile-nav__body {
    padding: var(--space-md) 0;
}

.mobile-nav__list {
    list-style: none;
}

.mobile-nav__list > li {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.active .mobile-nav__list > li {
    opacity: 1;
    transform: translateX(0);
}

.mobile-nav.active .mobile-nav__list > li:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.active .mobile-nav__list > li:nth-child(2) { transition-delay: 0.15s; }
.mobile-nav.active .mobile-nav__list > li:nth-child(3) { transition-delay: 0.2s; }
.mobile-nav.active .mobile-nav__list > li:nth-child(4) { transition-delay: 0.25s; }
.mobile-nav.active .mobile-nav__list > li:nth-child(5) { transition-delay: 0.3s; }
.mobile-nav.active .mobile-nav__list > li:nth-child(6) { transition-delay: 0.35s; }
.mobile-nav.active .mobile-nav__list > li:nth-child(7) { transition-delay: 0.4s; }
.mobile-nav.active .mobile-nav__list > li:nth-child(8) { transition-delay: 0.45s; }

.mobile-nav__list li a {
    display: block;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--fs-base);
    font-weight: var(--fw-medium);
    color: var(--color-text);
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--color-border-light);
}

.mobile-nav__list li a:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

.mobile-nav__list .sub-menu {
    list-style: none;
    background: var(--color-bg-alt);
}

.mobile-nav__list .sub-menu li a {
    padding-right: var(--space-2xl);
    font-size: var(--fs-sm);
    font-weight: var(--fw-regular);
}

/* ── Body offset for fixed header ── */
body {
    padding-top: var(--header-height);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .site-nav {
        display: none;
    }

    .site-header__menu-btn {
        display: flex;
    }
}