/* ==========================================================================
   HEADER - BEM Architecture
   ========================================================================== */

/* Variables (add to your :root if not exists) */
:root {
    --header-height: 64px;
    --header-z: 100;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* ==========================================================================
   HEADER BLOCK
   ========================================================================== */
.header {
    position: sticky;
    top: 0;
    z-index: var(--header-z);
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.header__container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.5rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    height: var(--header-height);
    justify-content: start;
    align-content: center;
    justify-items: end;
}

@media (min-width: 1024px) {
    .header__container {
        padding: 0 2rem;
    }
}

/* ==========================================================================
   BRAND
   ========================================================================== */
.header__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header__logo img {
/*    height: 40px;*/
    width: auto;
    display: block;
}

.header__burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    min-width: 40px;
}

.header__burger-line {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: var(--transition-fast);
}

@media (min-width: 1024px) {
    .header__burger {
        display: none;
    }
}

/* ==========================================================================
   DESKTOP NAV
   ========================================================================== */
.header__nav {
    display: none;
    justify-self: center;
}

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

.header__nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.header__nav-item {
    position: relative;
}

.header__nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

    .header__nav-link:hover {
        color: var(--color-primary);
    }

.header__chevron {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.header__nav-item:hover .header__chevron,
.header__nav-item--active .header__chevron {
    transform: rotate(180deg);
}

/* ==========================================================================
   SUBMENU
   ========================================================================== */
.header__submenu {
    position: absolute;
    top: 100%;
    inset-inline-end: 0;
    min-width: 180px;
    padding: 0.5rem;
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.header__nav-item--sub:hover .header__submenu,
.header__nav-item--sub:focus-within .header__submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.header__submenu-link {
    display: block;
    padding: 0.6rem 0.75rem;
    font-size: 0.9rem;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

    .header__submenu-link:hover {
        background-color: var(--color-surface-alt);
    }

/* ==========================================================================
   MEGA MENU
   ========================================================================== */
.header__mega {
    position: absolute;
    top: 100%;
    inset-inline-start: 50%;
    transform: translateX(50%) translateY(10px);
    width: min(720px, 90vw);
    padding: 1.25rem;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.header__nav-item--mega:hover .header__mega,
.header__nav-item--mega:focus-within .header__mega {
    opacity: 1;
    visibility: visible;
    transform: translateX(50%) translateY(4px);
}

.header__mega-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.5rem;
}

.header__mega-item {
    padding: 0.6rem 0.75rem;
    font-size: 0.9rem;
    color: var(--color-text);
    background-color: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    display: flex;
    justify-content: center;
}

html[data-theme='dark'] .header__mega-item {
    background-color: rgba(255, 255, 255, 0.05);
}

.header__mega-item:hover {
    color: var(--color-primary);
    background-color: var(--color-surface-alt);
}

.header__mega-footer {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.header__mega-btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

    .header__mega-btn:hover {
        transform: translateY(-1px);
    }

.header__mega-btn--primary {
    background-color: var(--color-primary);
    color: #fff;
}

.header__mega-btn--ghost {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

/* ==========================================================================
   ACTIONS
   ========================================================================== */
.header__actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header__action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

    .header__action-btn:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

.header__icon {
    width: 20px;
    height: 20px;
}

.header__icon--sun {
    display: none;
}

.header__icon--moon {
    display: block;
}

html[data-theme='dark'] .header__icon--sun {
    display: block;
}

html[data-theme='dark'] .header__icon--moon {
    display: none;
}

/* ==========================================================================
   AUTH BUTTONS
   ========================================================================== */
.header__auth {
    gap: 0.5rem;
    display: flex;
    align-items: center;
}

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

.header__auth-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

    .header__auth-btn:hover {
        transform: translateY(-1px);
    }

.header__auth-btn--primary {
    background-color: var(--color-primary);
    color: #fff;
}

.header__auth-btn--ghost {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

/* ==========================================================================
   USER MENU
   ========================================================================== */
.header__user {
    position: relative;
}

.header__user-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.75rem;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

    .header__user-btn:hover {
        border-color: var(--color-primary);
    }

.header__avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: var(--color-primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 50%;
}

.header__user-name {
    display: none;
    font-size: 0.875rem;
}

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

.header__dropdown {
    position: absolute;
    top: calc(100% + 8px);
    inset-inline-end: 0;
    min-width: 200px;
    padding: 0.5rem;
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.header__dropdown--active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.header__dropdown-link {
    display: block;
    width: 100%;
    padding: 0.6rem 0.75rem;
    font-size: 0.9rem;
    text-align: start;
    color: var(--color-text);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

    .header__dropdown-link:hover {
        background-color: var(--color-surface-alt);
    }

.header__dropdown-link--danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* ==========================================================================
   MOBILE NAV
   ========================================================================== */
.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: calc(var(--header-z) + 10);
    visibility: hidden;
}

.mobile-nav--active {
    visibility: visible;
}

.mobile-nav__overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-nav--active .mobile-nav__overlay {
    opacity: 1;
}

.mobile-nav__panel {
    position: absolute;
    top: 0;
    bottom: 0;
    inset-inline-end: 0;
    display: flex;
    flex-direction: column;
    width: min(320px, 85vw);
    background-color: var(--color-surface);
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

[dir="rtl"] .mobile-nav__panel {
    transform: translateX(-100%);
}

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

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

/*.mobile-nav__logo img {
    height: 36px;
}*/

.mobile-nav__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
}

    .mobile-nav__close svg {
        width: 18px;
        height: 18px;
    }

.mobile-nav__body {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.mobile-nav__link {
    display: block;
    padding: 0.75rem 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

/* ==========================================================================
   MOBILE ACCORDION
   ========================================================================== */
.mobile-nav__group {
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav__trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.75rem 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-nav__arrow {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.mobile-nav__group--open .mobile-nav__arrow {
    transform: rotate(180deg);
}

.mobile-nav__content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-base);
}

.mobile-nav__group--open .mobile-nav__content {
    grid-template-rows: 1fr;
}

.mobile-nav__content > div {
    overflow: hidden;
}

.mobile-nav__categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
/*    padding: 0.5rem 0;*/
}

.mobile-nav__category {
    padding: 0.6rem 0.75rem;
    font-size: 0.875rem;
    color: var(--color-text);
    background-color: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    text-align: center;
}

html[data-theme='dark'] .mobile-nav__category {
    background-color: rgba(255, 255, 255, 0.05);
}

.mobile-nav__cta {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem 0;
}

.mobile-nav__cta-btn {
    flex: 1;
    padding: 0.6rem;
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    border-radius: var(--radius-sm);
}

.mobile-nav__cta-btn--primary {
    background-color: var(--color-primary);
    color: #fff;
}

.mobile-nav__cta-btn--ghost {
    background-color: var(--color-secondary);
    border: 1px solid var(--color-border);
    color: #ffffff;
}

/* ==========================================================================
   MOBILE FOOTER
   ========================================================================== */
.mobile-nav__footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    padding: 1rem;
    border-top: 1px solid var(--color-border);
}

.mobile-nav__auth {
    padding: 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    border-radius: var(--radius-sm);
}

.mobile-nav__auth--primary {
    background-color: var(--color-primary);
    color: #fff;
}

.mobile-nav__auth--ghost {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
body.menu-open {
    overflow: hidden;
}