/* ========================================
   TOPBAR
   ======================================== */
.topbar {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1001;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.topbar-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
}

.topbar-item i {
    color: var(--color-accent);
    font-size: 0.75rem;
}

.topbar-divider {
    color: rgba(255, 255, 255, 0.2);
}

.topbar-right {
    display: flex;
    align-items: center;
}

.topbar-social {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.topbar-social a {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-circle);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
    transition: all var(--transition-base);
}

.topbar-social a:hover {
    background: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-1px);
}

/* ========================================
   HEADER
   ======================================== */
.header {
    background: var(--color-white);
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-base);
    border-bottom: 1px solid var(--color-border-light);
}

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

/* --- Logo --- */
.header-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.header-logo img {
    height: 50px;
    width: auto;
}

.header-logo .logo-light {
    display: none;
}

/* --- Navigation --- */
.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link:hover,
.nav-item.active .nav-link {
    color: var(--color-accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-item.active .nav-link::after {
    width: 60%;
}

.nav-link i {
    font-size: 0.65rem;
    transition: transform var(--transition-base);
}

.has-dropdown:hover .nav-link i {
    transform: rotate(180deg);
}

/* --- Mega Menu --- */
.has-dropdown {
    position: relative;
}

.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    padding: var(--space-xl);
    min-width: 640px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all var(--transition-base);
    border: 1px solid var(--color-border-light);
    z-index: 100;
}

/* Görünmez köprü — nav link ile mega menu arasındaki boşluğu kapatır */
.mega-menu::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
}

.has-dropdown:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
    transform: translateX(-50%) translateY(0);
}

.mega-menu-inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.mega-menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
}

.mega-menu-item:hover {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.mega-menu-item i {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    font-size: 0.9rem;
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.mega-menu-item:hover i {
    background: var(--color-accent);
    color: var(--color-white);
}

.mega-menu-cta {
    background: var(--color-bg);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mega-menu-cta p {
    margin-bottom: 0;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
}

/* --- Header Right --- */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.header-phone {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.header-phone:hover {
    color: var(--color-accent);
}

.header-phone i {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: var(--radius-circle);
    font-size: 0.85rem;
}

/* --- Hamburger --- */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1002;
}

.hamburger-line {
    width: 26px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* --- Mobile Menu --- */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: var(--color-white);
    z-index: 1200;
    overflow-y: auto;
    transition: right var(--transition-slow);
    box-shadow: var(--shadow-2xl);
}

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

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

.mobile-menu-header img {
    height: 40px;
    width: auto;
}

.mobile-menu-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-circle);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 1.1rem;
    transition: all var(--transition-base);
}

.mobile-menu-close:hover {
    background: var(--color-danger);
    color: var(--color-white);
}

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

.mobile-nav-link {
    display: block;
    padding: 14px var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-item.active .mobile-nav-link {
    color: var(--color-accent);
    background: var(--color-accent-light);
    border-left-color: var(--color-accent);
}

.mobile-nav-link-wrap {
    display: flex;
    align-items: center;
}

.mobile-nav-link-wrap .mobile-nav-link {
    flex: 1;
}

.mobile-dropdown-toggle {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    transition: all var(--transition-base);
}

.mobile-dropdown-toggle.active {
    color: var(--color-accent);
}

.mobile-dropdown-toggle.active i {
    transform: rotate(180deg);
}

.mobile-dropdown {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(135deg, #f8f9fc 0%, #f1f3f8 100%);
    margin: 0 var(--space-md);
    border-radius: var(--radius-md);
}

.mobile-dropdown.open {
    max-height: 600px;
    margin-top: 4px;
    margin-bottom: 4px;
}

.mobile-dropdown li {
    margin: 0;
}

.mobile-dropdown li:first-child a {
    padding-top: 12px;
}

.mobile-dropdown li:last-child a {
    padding-bottom: 12px;
}

.mobile-dropdown li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 16px 9px 12px;
    margin: 0 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    transition: all 0.25s ease;
    border-radius: var(--radius-sm);
    border-left: 3px solid transparent;
    line-height: 1.3;
}

.mobile-dropdown li a:hover,
.mobile-dropdown li a:active {
    color: var(--color-accent);
    background: rgba(232, 130, 42, 0.08);
    border-left-color: var(--color-accent);
}

.mobile-dropdown li a i {
    width: 32px;
    height: 32px;
    min-width: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    font-size: 0.8rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    transition: all 0.25s ease;
}

.mobile-dropdown li a:hover i,
.mobile-dropdown li a:active i {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 2px 8px rgba(232, 130, 42, 0.3);
    transform: scale(1.05);
}

.mobile-menu-contact {
    padding: var(--space-xl);
    border-top: 1px solid var(--color-border-light);
    margin-top: var(--space-md);
}

.mobile-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 10px 0;
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.mobile-contact-item i {
    color: var(--color-accent);
    width: 20px;
    text-align: center;
}

/* --- Scroll to Top --- */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 900;
    cursor: pointer;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(232, 130, 42, 0.4);
}