/* ==========================================================================
   NAVIGATION AND HEADER STYLES
   Solvevare - Desktop and Mobile Interfaces
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: transparent;
    border-bottom: 1px solid rgba(255, 255, 255, 0.0);
    transition: background-color var(--transition-medium), border-color var(--transition-medium), backdrop-filter var(--transition-medium);
}

/* Scroll active class added by JS */
.site-header.scrolled {
    background-color: rgba(10, 10, 12, 0.85);
    border-bottom-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* Active mega-menu state header background locking */
.site-header.menu-open {
    background-color: rgba(10, 10, 12, 0.95) !important;
    border-bottom-color: rgba(255, 255, 255, 0.06) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 5vw, 5rem);
    transition: height var(--transition-medium);
}

.site-header.scrolled .nav-container {
    height: 75px;
}

/* Logo detail */
.logo {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
    position: relative;
    z-index: 110;
}

.logo-dot {
    color: var(--color-accent-purple);
    font-size: 1.5rem;
    line-height: 1;
    margin-left: 1px;
}

/* Center Desktop Links */
.nav-links {
    display: flex;
    gap: 2.25rem;
}

.nav-item-wrapper {
    position: relative;
}

.nav-link {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    position: relative;
    padding: 2.2rem 0; /* Expanded padding to keep cursor in hover area */
    display: block;
    transition: color var(--transition-fast);
}

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

/* Underline slide effect */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 1.8rem;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent-purple);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-medium);
}

.nav-link:hover::after,
.nav-link.active-nav::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-link.active-nav {
    color: var(--color-text-primary);
}

/* Right Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    position: relative;
    z-index: 110;
}

/* CTA Buttons */
.btn-nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.75rem 1.5rem;
    border-radius: 40px;
    border: none;
    background-color: transparent;
    color: var(--color-text-primary);
    box-shadow: none;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-medium);
}

.btn-nav-cta svg {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-medium);
}

.btn-nav-cta:hover {
    background-color: transparent;
    border-color: transparent;
    box-shadow: none;
}

.btn-nav-cta:hover svg {
    transform: none;
}

/* Circular Menu Button */
.btn-menu-circle {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    background-color: transparent;
    transition: border-color var(--transition-fast), transform var(--transition-medium);
    cursor: pointer;
}

.btn-menu-circle span {
    display: block;
    width: 16px;
    height: 1.5px;
    background-color: var(--color-text-primary);
    transition: transform var(--transition-medium), background-color var(--transition-medium), width var(--transition-medium);
}

.btn-menu-circle:hover {
    border-color: var(--color-accent-purple);
    transform: scale(1.05);
}

.btn-menu-circle:hover span {
    background-color: var(--color-accent-purple);
}

/* Mobile active Hamburger states */
.btn-menu-circle.active span:nth-child(1) {
    transform: translateY(3px) rotate(45deg);
    width: 18px;
}

.btn-menu-circle.active span:nth-child(2) {
    transform: translateY(-2.5px) rotate(-45deg);
    width: 18px;
}


/* ==========================================================================
   DESKTOP MEGA MENU PANELS
   ========================================================================== */

.mega-menus-container {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: rgba(10, 10, 12, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
    z-index: 50;
    overflow: hidden;
    height: 0;
    opacity: 0;
    visibility: hidden;
}

.mega-menu {
    display: none;
    width: 100%;
    padding: 3.5rem 0;
}

.mega-menu-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 5vw, 5rem);
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 5rem;
}

/* Left Info Card */
.mega-menu-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    padding-right: 4rem;
}

.mega-menu-category-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    line-height: 1.1;
}

.mega-menu-description {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    max-width: 280px;
}

.mega-menu-action {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent-purple);
    transition: color var(--transition-fast);
}

.mega-menu-action svg {
    width: 10px;
    height: 10px;
    transition: transform var(--transition-medium);
}

.mega-menu-action:hover {
    color: var(--color-text-primary);
}

.mega-menu-action:hover svg {
    transform: translate(2px, -2px);
}

/* Right Columns Layout */
.mega-menu-columns {
    display: flex;
    gap: 4rem;
}

.mega-menu-column {
    flex: 1;
    min-width: 180px;
}

.mega-menu-column-title {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.mega-menu-link {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 0.5rem 0;
    transition: color var(--transition-fast), transform var(--transition-medium);
}

.mega-menu-link:hover {
    color: var(--color-text-primary);
    transform: translateX(4px);
}

/* Compact Industry Link Grid */
.mega-menu-link-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.25rem 2rem;
    max-width: 320px;
}

.locations-mega-menu .mega-menu-inner {
    grid-template-columns: 260px 1fr;
    gap: 4rem;
    align-items: start;
}

.locations-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: start;
}

.locations-group {
    width: 100%;
}

.locations-group-title {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 0.65rem;
}

.locations-group-links {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.25rem 1rem;
}

.locations-grid .mega-menu-link {
    padding: 0.35rem 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transform: none;
}

.locations-grid .mega-menu-link:hover {
    transform: none;
    color: var(--color-text-primary);
}

@media (max-width: 1400px) and (min-width: 1200px) {
    .locations-group-links {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 1200px) and (min-width: 1024px) {
    .locations-mega-menu .mega-menu-inner {
        grid-template-columns: 200px 1fr;
        gap: 2rem;
    }

    .locations-group-links {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.25rem 0.75rem;
    }
}

@media (max-width: 1023px) {
    .locations-mega-menu .mega-menu-inner {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .locations-group-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.25rem 1rem;
        width: 100%;
    }
}


/* ==========================================================================
   MOBILE FULL-SCREEN MENU & ACCORDIONS
   ========================================================================== */

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background-color: var(--color-bg-nav-mobile);
    z-index: 99;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    overflow-y: auto;
}

.mobile-menu-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 80vh;
    padding: 6rem 2rem 4rem;
    text-align: center;
}

.mobile-menu-logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
    margin-bottom: 2rem;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 480px;
}

.mobile-nav-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-accordion-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.35rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
    padding: 1.25rem 0;
    text-align: left;
    transition: color var(--transition-fast);
}

.mobile-accordion-trigger:hover,
.mobile-accordion-trigger.active {
    color: var(--color-accent-purple);
}

.accordion-arrow {
    width: 20px;
    height: 20px;
    opacity: 0.6;
    transition: transform var(--transition-medium), opacity var(--transition-fast);
}

.mobile-accordion-trigger.active .accordion-arrow {
    transform: rotate(180deg);
    opacity: 1;
}

/* Scroll wrapper controlled by GSAP height transition */
.mobile-accordion-content {
    height: 0;
    overflow: hidden;
    position: relative;
    will-change: height;
}

.mobile-accordion-content-inner {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    padding: 0.5rem 0 1.5rem 0.5rem;
    text-align: left;
}

.mobile-sub-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 0.25rem 0;
    transition: color var(--transition-fast);
}

.mobile-sub-link:hover {
    color: var(--color-accent-purple);
}

.mobile-menu-cta {
    margin-top: 3rem;
}

/* Close Button styling */
.btn-menu-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: transparent;
    transition: border-color var(--transition-fast), transform var(--transition-medium);
    cursor: pointer;
    z-index: 110;
}

.btn-menu-close span {
    display: block;
    position: absolute;
    width: 18px;
    height: 1.5px;
    background-color: var(--color-text-primary);
    transition: background-color var(--transition-fast);
}

.btn-menu-close span:nth-child(1) {
    transform: rotate(45deg);
}

.btn-menu-close span:nth-child(2) {
    transform: rotate(-45deg);
}

.btn-menu-close:hover {
    border-color: var(--color-accent-purple);
    transform: scale(1.05);
}

.btn-menu-close:hover span {
    background-color: var(--color-accent-purple);
}