/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    padding: 20px 0;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    padding: 12px 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

.site-header.scrolled .site-nav__link {
    color: var(--color-text);
}

.site-header.scrolled .site-nav__link:hover,
.site-header.scrolled .site-nav__link.active {
    color: var(--color-primary);
}

.site-header.scrolled .site-nav__toggle-bar {
    background: var(--color-text);
}

/* Navigation */
.site-nav {
    display: grid;
    grid-template-columns: minmax(0, auto) minmax(0, 1fr) minmax(0, auto);
    align-items: center;
    column-gap: 20px;
    position: relative;
}

.site-nav__brand {
    flex-shrink: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    transition: opacity var(--transition-fast);
    min-width: 0;
}

.site-nav__brand:hover {
    opacity: 0.92;
}

.site-nav__logo {
    height: 64px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
    object-position: center;
    flex-shrink: 0;
    display: block;
    transition: transform var(--transition-base), height var(--transition-base), max-width var(--transition-base);
}

.site-nav__brand:hover .site-nav__logo {
    transform: scale(1.03);
}

.site-header.scrolled .site-nav__logo {
    height: 56px;
    max-width: 130px;
}

/* Brand text beside logo */
.site-nav__brand-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    line-height: 1.15;
}

.site-nav__brand-title {
    font-family: var(--font-family);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.site-nav__brand-title--dark {
    color: #5D4037;
}

.site-nav__brand-title--accent {
    color: var(--color-primary);
}

.site-header.scrolled .site-nav__brand-title {
    font-size: 1.3rem;
}

.site-nav__brand-subtitle {
    font-family: var(--font-family);
    font-size: 0.68rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--color-gray-600);
    white-space: nowrap;
}

.site-header.scrolled .site-nav__brand-subtitle {
    font-size: 0.6rem;
    letter-spacing: 2px;
}

/* Mobile menu brand variant */
.site-nav__brand--mobile .site-nav__logo {
    height: 56px;
    width: auto;
    max-width: 130px;
}

.site-nav__brand--mobile .site-nav__brand-title {
    font-size: 1.25rem;
}

.site-nav__brand--mobile .site-nav__brand-subtitle {
    font-size: 0.58rem;
    letter-spacing: 2px;
}

/* Desktop Menu */
.site-nav__menu {
    position: static;
    left: auto;
    transform: none;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: nowrap;
    gap: 2px;
    margin: 0;
    padding: 0;
    list-style: none;
    min-width: 0;
}

.site-nav__link {
    display: inline-block;
    padding: 8px 14px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
    white-space: nowrap;
}

.site-header:not(.scrolled) .site-nav__link {
    color: var(--color-gray-800);
}

.site-nav__link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base);
}

.site-nav__link:hover,
.site-nav__link.active {
    color: var(--color-primary);
}

.site-nav__link.active::after,
.site-nav__link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* Actions */
.site-nav__actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-shrink: 0;
    min-width: 0;
    z-index: 2;
}

.site-nav__user {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    max-width: 160px;
    padding: 3px 10px 3px 3px;
    border-radius: 999px;
    background: rgba(245, 124, 0, 0.08);
    border: 1px solid rgba(245, 124, 0, 0.18);
    flex-shrink: 1;
    min-width: 0;
}

.site-nav__user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #F57C00, #E65100);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.site-nav__user-meta {
    min-width: 0;
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    padding-right: 2px;
}

.site-nav__user-name {
    font-size: 0.8rem;
    font-weight: 650;
    color: #1A237E;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 110px;
}

.site-nav__user-role {
    font-size: 0.66rem;
    color: #757575;
    font-weight: 500;
}

.site-nav__actions .btn-secondary.btn-sm,
.site-nav__actions .site-nav__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1.5px solid #F57C00;
    background: transparent;
    color: #F57C00;
    font-size: 0.8rem;
    font-weight: 650;
    white-space: nowrap;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
}

.site-nav__actions .btn-secondary.btn-sm:hover,
.site-nav__actions .site-nav__btn:hover {
    background: #F57C00;
    color: #fff;
    box-shadow: 0 8px 18px rgba(245, 124, 0, 0.25);
}

.site-nav__btn--solid {
    background: #F57C00 !important;
    color: #fff !important;
}

.site-nav__btn--solid:hover {
    background: #E65100 !important;
}

.site-nav__actions form.d-inline {
    display: inline-flex !important;
    margin: 0;
}

/* Mobile Toggle */
.site-nav__toggle {
    width: 44px;
    height: 44px;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    z-index: 2;
    border: 0;
    background: transparent;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.site-nav__toggle:hover {
    background: var(--color-primary-ghost);
}

.site-nav__toggle-bar {
    width: 22px;
    height: 2px;
    background: var(--color-gray-800);
    border-radius: 2px;
    transition: all var(--transition-base);
    display: block;
}

.site-nav__toggle.active .site-nav__toggle-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.site-nav__toggle.active .site-nav__toggle-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.site-nav__toggle.active .site-nav__toggle-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Menu — must live OUTSIDE .site-header (backdrop-filter breaks fixed children) */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 1200;
    visibility: hidden;
    pointer-events: none;
}

.mobile-menu.active {
    visibility: visible;
    pointer-events: auto;
}

.mobile-menu__overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.mobile-menu.active .mobile-menu__overlay {
    opacity: 1;
}

.mobile-menu__panel {
    position: absolute;
    top: 0;
    right: 0;
    width: min(360px, 92vw);
    height: 100%;
    height: 100dvh;
    background: #ffffff;
    padding: 20px 20px 24px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    box-shadow: -12px 0 40px rgba(15, 23, 42, 0.18);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-menu.active .mobile-menu__panel {
    transform: translateX(0);
}

.mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid #eee;
    flex-shrink: 0;
}

.mobile-menu__header .site-nav__brand {
    flex: 1;
    min-width: 0;
}

.mobile-menu__close {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 0;
    background: #f5f5f5;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    color: #333;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s ease, color 0.2s ease;
}

.mobile-menu__close:hover {
    background: rgba(245, 124, 0, 0.12);
    color: #F57C00;
}

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin: 0;
    flex: 0 0 auto;
}

.mobile-menu__link {
    display: block;
    padding: 12px 14px;
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    border-radius: 12px;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
}

.mobile-menu__link:hover,
.mobile-menu__link.active {
    background: rgba(245, 124, 0, 0.1);
    color: #F57C00;
}

.mobile-menu__actions {
    padding-top: 14px;
    margin-top: 12px;
    border-top: 1px solid #eee;
    flex: 0 0 auto;
}

.mobile-menu__actions .btn-secondary,
.mobile-menu__actions .site-nav__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 46px;
    border-radius: 12px;
    border: 1.5px solid #F57C00;
    background: transparent;
    color: #F57C00;
    font-weight: 650;
    text-decoration: none;
    margin-bottom: 10px;
}

.mobile-menu__actions .btn-secondary:last-child,
.mobile-menu__actions button.btn-secondary {
    margin-bottom: 0;
}

.mobile-menu__actions form {
    margin: 0;
}

.mobile-menu__user {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    margin-bottom: 14px;
    padding: 12px;
    border-radius: 14px;
    background: rgba(245, 124, 0, 0.08);
    border: 1px solid rgba(245, 124, 0, 0.16);
}

.mobile-menu__user strong {
    display: block;
    font-size: 0.95rem;
    color: #1A237E;
    font-weight: 700;
}

.mobile-menu__user small {
    display: block;
    font-size: 0.75rem;
    color: #757575;
    margin-top: 2px;
}

body.mobile-menu-open {
    overflow: hidden !important;
    touch-action: none;
}

@media (max-width: 1199.98px) {
    .site-nav {
        column-gap: 12px;
    }

    .site-nav__link {
        padding: 8px 10px;
        font-size: 0.84rem;
    }

    .site-nav__user-meta {
        display: none;
    }

    .site-nav__user {
        max-width: none;
        padding: 3px;
    }

    .site-nav__actions .btn-secondary.btn-sm,
    .site-nav__actions .site-nav__btn {
        padding: 0 12px;
        font-size: 0.76rem;
    }
}

@media (max-width: 991.98px) {
    .site-header {
        padding: 10px 0;
        background: rgba(255, 255, 255, 0.97);
        box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    }

    .site-header.scrolled {
        padding: 8px 0;
    }

    .site-nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        column-gap: 0;
    }

    .site-nav__toggle {
        display: flex !important;
    }

    .site-nav__menu,
    .site-nav__actions {
        display: none !important;
    }

    .site-nav__logo {
        height: 48px;
        width: auto;
        max-width: 110px;
    }

    .site-header.scrolled .site-nav__logo {
        height: 44px;
        max-width: 100px;
    }

    .site-nav__brand {
        gap: 10px;
    }

    .site-nav__brand-title {
        font-size: 1.15rem;
    }

    .site-nav__brand-subtitle {
        font-size: 0.55rem;
        letter-spacing: 1.6px;
    }
}

@media (max-width: 400px) {
    .site-nav__brand-subtitle {
        display: none;
    }

    .site-nav__brand-title {
        font-size: 1.05rem;
    }

    .site-nav__logo {
        height: 44px;
        max-width: 96px;
    }
}