/**
 * Header Styles — mostyfm
 * Site header v2, pill-nav, search drawer, mobile menu.
 */

/* =============================================
   HEADER (v2)
   ============================================= */

.site-header-v2 {
    position: sticky;
    top: var(--space-4);
    z-index: 100;
    pointer-events: none;
}

.site-header-v2 .header-inner {
    display: flex;
    justify-content: center;
    padding: 0 var(--space-4);
}

.pill-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    height: 56px;
    padding: 0 var(--space-3) 0 var(--space-5);
    background: color-mix(in srgb, var(--color-surface) 75%, transparent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    pointer-events: auto;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-normal);
    width: 100%;
}

@media (min-width: 1024px) {
    .pill-nav {
        height: 64px;
        padding: 0 var(--space-4) 0 var(--space-6);
        gap: var(--space-6);
        max-width: fit-content;
    }
}

.site-logo-link {
    text-decoration: none;
    flex-shrink: 0;
    line-height: 1;
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo-img {
    display: block;
    height: 32px;
    width: auto;
    filter: brightness(0);
    flex-shrink: 0;
}

[data-theme="dark"] .header-logo-img {
    filter: invert(1);
}

.header-logo-label {
    display: flex;
    flex-direction: column;
    justify-content: center;
    font-family: var(--font-family);
    font-weight: 900;
    letter-spacing: 0.05em;
    color: var(--color-text);
    text-transform: uppercase;
    white-space: nowrap;
    line-height: 1;
}

.logo-text-top {
    font-size: 1.125rem;
}

.logo-text-bottom {
    font-size: 0.65rem;
    color: var(--color-accent-1);
    letter-spacing: 0.1em;
    margin-top: 2px;
}

@media (max-width: 768px) {
    .header-logo-img {
        height: 26px;
    }

    .logo-text-top {
        font-size: 0.9rem;
    }

    .logo-text-bottom {
        font-size: 0.55rem;
        margin-top: 1px;
    }
}

.site-logo-text {
    font-family: var(--font-family);
    font-weight: 900;
    font-size: 1.125rem;
    letter-spacing: 0.05em;
    color: var(--color-text);
    text-transform: uppercase;
    white-space: nowrap;
}

.logo-light {
    opacity: 0.5;
    font-weight: 400;
}

.desktop-only {
    display: none;
}

@media (min-width: 1024px) {
    .desktop-only {
        display: block;
    }

    .mobile-only {
        display: none !important;
    }
}

.main-navigation .nav-links {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: var(--space-5);
}

.main-navigation .nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.main-navigation .nav-links a:hover {
    color: var(--color-text);
}

.main-navigation .nav-links li:has(.sub-menu)>a::after {
    content: '▼';
    font-family: Arial, sans-serif;
    font-size: 0.6em;
    margin-left: 6px;
    vertical-align: middle;
    opacity: 0.6;
    display: inline-block;
    transition: transform 0.3s ease;
}

.main-navigation .nav-links li:has(.sub-menu):hover>a::after,
.main-navigation .nav-links li:has(.sub-menu):focus-within>a::after {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.main-navigation .nav-links li {
    position: relative;
    padding: var(--space-3) 0;
}

.main-navigation .nav-links .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-inner);
    padding: var(--space-2) 0;
    margin: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-soft);
    z-index: 101;
}

.main-navigation .nav-links li:hover>.sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-navigation .nav-links .sub-menu li {
    padding: 0;
}

.main-navigation .nav-links .sub-menu a {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.main-navigation .nav-links .sub-menu a:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

/* Search Drawer */
.search-drawer {
    position: absolute;
    top: calc(100% + var(--space-2));
    left: 0;
    width: 100%;
    z-index: 100;
    pointer-events: none;
}

.search-drawer-inner-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    padding: var(--space-2) var(--space-4);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.search-form-inner {
    display: flex;
    align-items: center;
    width: 100%;
}

.search-drawer .search-form-inner input,
.search-drawer .search-form-inner input[type="search"] {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-size: var(--text-base);
    padding: var(--space-2) var(--space-4);
    outline: none;
    font-family: inherit;
    border-radius: var(--radius-pill);
}

.search-drawer .search-form-inner input::placeholder {
    color: var(--color-text-muted);
}

.search-form-inner button[type="submit"] {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    border-radius: var(--radius-pill);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.search-drawer #search-close {
    flex-shrink: 0;
}

.search-form-inner button[type="submit"]:hover {
    color: var(--color-primary);
    background: rgba(255, 255, 255, 0.05);
}

.search-drawer.is-active {
    pointer-events: auto;
}

.search-drawer.is-active .search-drawer-inner-box {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.header-divider {
    width: 1px;
    height: 24px;
    background: var(--color-border);
    margin: 0 var(--space-2);
}

.icon-btn.btn-round {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    cursor: pointer;
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn.btn-round:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #111;
}

.profile-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-text);
    color: var(--color-surface);
    border: none;
    border-radius: 50%;
    height: 36px;
    cursor: pointer;
    font-weight: 600;
    padding: 0 var(--space-3);
    border-radius: var(--radius-pill);
    transition: opacity var(--transition-fast);
    text-decoration: none;
}

.profile-btn.btn-round {
    width: 36px;
    padding: 0;
    border-radius: 50%;
    overflow: hidden;
}

.profile-btn:hover {
    opacity: 0.9;
}

.profile-btn.is-logged-in {
    background: transparent;
    border: 2px solid var(--color-accent-1);
    padding: 2px;
}

.user-avatar-sm {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Theme Toggle icons */
[data-theme="dark"] #theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] #theme-toggle .moon-icon {
    display: block !important;
}

/* Hamburger */
.hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.hamburger-line {
    display: block;
    width: 16px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.hamburger-btn.is-active .hamburger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.hamburger-btn.is-active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.is-active .hamburger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* =============================================
   MOBILE MENU OVERLAY
   ============================================= */

.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 998;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    pointer-events: none;
}

.mobile-menu-overlay.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* =============================================
   MOBILE MENU PANEL
   ============================================= */

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 999;
    /* fully opaque — content never bleeds through */
    background: var(--color-bg);
    display: flex !important;
    flex-direction: column;
    padding: var(--space-6) var(--space-6) var(--space-8);
    overflow-y: auto;
    pointer-events: auto;
    /* override header's pointer-events: none */

    /* animation: scale + fade */
    transform: translateY(6%) scale(0.97);
    opacity: 0;
    visibility: hidden;
    transition:
        transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        opacity 0.35s ease,
        visibility 0s linear 0.4s;
}

.mobile-menu.is-open {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
    transition:
        transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        opacity 0.35s ease,
        visibility 0s linear 0s;
}

/* Close button */
.mobile-menu-close {
    align-self: flex-end;
    margin-bottom: var(--space-5);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    flex-shrink: 0;
}

.mobile-menu-close:hover {
    background: var(--color-accent-1);
    border-color: var(--color-accent-1);
    color: #fff;
}

/* =============================================
   TABS
   ============================================= */

.mobile-menu-tabs {
    display: flex;
    gap: var(--space-2);
    background: var(--color-bg);
    border-radius: var(--radius-pill);
    padding: var(--space-1);
    margin-bottom: var(--space-8);
    width: fit-content;
}

.mobile-tab {
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-pill);
    font-size: 1rem;
    font-weight: 600;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
}

.mobile-tab:hover {
    color: var(--color-text);
}

.mobile-tab.active {
    background: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-border);
}

/* =============================================
   TAB PANELS
   ============================================= */

.mobile-tab-panel {
    flex: 1;
    display: none;
    animation: fadeSlideUp 0.3s ease forwards;
}

.mobile-tab-panel.active {
    display: block;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* =============================================
   NAV LINKS
   ============================================= */

.mobile-nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

/* Staggered entrance: each link fades-up with offset */
.mobile-nav-links li {
    opacity: 0;
    transform: translateY(16px);
    animation: none;
}

.mobile-menu.is-open .mobile-nav-links li {
    animation: menuLinkIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.mobile-menu.is-open .mobile-nav-links li:nth-child(1) {
    animation-delay: 0.08s;
}

.mobile-menu.is-open .mobile-nav-links li:nth-child(2) {
    animation-delay: 0.13s;
}

.mobile-menu.is-open .mobile-nav-links li:nth-child(3) {
    animation-delay: 0.18s;
}

.mobile-menu.is-open .mobile-nav-links li:nth-child(4) {
    animation-delay: 0.23s;
}

.mobile-menu.is-open .mobile-nav-links li:nth-child(5) {
    animation-delay: 0.28s;
}

.mobile-menu.is-open .mobile-nav-links li:nth-child(6) {
    animation-delay: 0.33s;
}

.mobile-menu.is-open .mobile-nav-links li:nth-child(7) {
    animation-delay: 0.38s;
}

@keyframes menuLinkIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

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

.mobile-nav-links a {
    display: block;
    font-size: 1.8rem;
    font-weight: 600;
    line-height: 1.15;
    color: var(--color-text-muted);
    padding: var(--space-2) 0;
    transition: color var(--transition-fast), transform var(--transition-fast);
    letter-spacing: -0.02em;
}

.mobile-nav-links a:hover {
    color: var(--color-text);
    transform: translateX(6px);
}

.mobile-nav-links a.is-current {
    color: var(--color-accent-1);
}

@media (max-width: 380px) {
    .mobile-nav-links a {
        font-size: 1.75rem;
    }
}

/* =============================================
   FOOTER
   ============================================= */

.mobile-menu-footer {
    margin-top: auto;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--space-3);
    align-items: center;
    flex-wrap: wrap;
}


/* Header user block */
.header-user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.header-user-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: opacity var(--transition-fast);
}

.header-user-link:hover {
    opacity: 0.8;
}

.header-username {
    font-size: 0.85rem;
    font-weight: 500;
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-avatar-sm {
    border-radius: 50%;
    width: 28px;
    height: 28px;
    object-fit: cover;
    border: 1px solid var(--color-border-subtle);
}

/* Responsive */
@media (max-width: 1024px) {
    .main-navigation {
        display: none;
    }

    .hamburger-btn {
        display: flex;
    }
}

@media (max-width: 768px) {
    .header-inner {
        gap: var(--space-1);
        padding: 0 var(--space-2);
        height: 56px;
    }

    .header-actions {
        gap: var(--space-1);
    }
}