/* Header Styles - Fully Responsive */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --accent: #ec4899;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #94a3b8;
    --gray-light: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: white;
    box-shadow: var(--shadow);
    transition: var(--transition);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    position: relative;
}

/* Logo Styles */
.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--dark);
    transition: var(--transition);
    height: 40px;
    flex-shrink: 0;
}

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

.logo-svg {
    display: none;
    width: 28px;
    height: 28px;
    transition: var(--transition);
}

.logo:hover .logo-svg {
    transform: rotate(15deg);
}

.logo-img {
    height: 100%;
    width: auto;
    max-width: 160px;
    transition: var(--transition);
    object-fit: contain;
}

.logo:hover .logo-img {
    transform: scale(1.05);
    opacity: 0.9;
}

.logo-text {
    display: none;
    font-size: 1.1rem;
    font-weight: 700;
}

/* Main Navigation */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 1rem;
    padding: 0;
    margin: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    position: relative;
    transition: var(--transition);
    font-size: 0.95rem;
    white-space: nowrap;
}

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

.nav-link svg {
    width: 14px;
    height: 14px;
    transition: var(--transition);
    flex-shrink: 0;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
    padding: 0.5rem 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}

.dropdown-item {
    display: block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--dark);
    transition: var(--transition);
    font-size: 0.9rem;
}

.dropdown-item:hover {
    background-color: var(--gray-light);
    color: var(--primary);
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-item:hover .nav-link svg {
    transform: rotate(180deg);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.95rem;
}

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

.header-phone svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 0.95rem;
    line-height: 1;
}

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.85rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: white;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    margin-left: 0.5rem;
}

.menu-line {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--dark);
    transition: var(--transition);
    transform-origin: center;
}

.menu-line:not(:last-child) {
    margin-bottom: 5px;
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: white;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

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

.mobile-nav-inner {
    padding: 1rem;
    padding-bottom: 2rem;
}

.mobile-nav-list {
    list-style: none;
    margin-bottom: 1rem;
    padding: 0;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 0;
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    border-bottom: 1px solid var(--gray-light);
    font-size: 1rem;
}

.mobile-dropdown-toggle {
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 0;
    color: var(--dark);
    font-weight: 500;
    font-size: 1rem;
    border-bottom: 1px solid var(--gray-light);
}

.mobile-dropdown-toggle svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

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

.mobile-dropdown-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding-left: 0.5rem;
}

.mobile-dropdown-menu.active {
    max-height: 500px;
}

.mobile-dropdown-item {
    display: block;
    padding: 0.75rem 0.5rem;
    text-decoration: none;
    color: var(--dark);
    font-size: 0.9375rem;
    border-bottom: 1px solid #f1f1f1;
}

.mobile-dropdown-item:hover {
    color: var(--primary);
}

.mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    .main-nav,
    .header-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .mobile-menu-toggle.active .menu-line:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .mobile-menu-toggle.active .menu-line:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active .menu-line:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 60px;
    }

    .mobile-nav {
        top: 60px;
        height: calc(100vh - 60px);
    }

    .logo {
        font-size: 1rem;
        gap: 0.4rem;
    }

    .logo-img {
        max-width: 140px;
    }

    .logo-svg {
        width: 24px;
        height: 24px;
    }
}

@media (max-width: 480px) {
    .header-inner {
        height: 56px;
    }

    .mobile-nav {
        top: 56px;
        height: calc(100vh - 56px);
    }

    .logo-img {
        max-width: 120px;
    }

    .btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.9rem;
    }

    .mobile-nav-inner {
        padding: 0.75rem;
    }

    .mobile-nav-link,
    .mobile-dropdown-toggle {
        padding: 0.75rem 0;
        font-size: 0.95rem;
    }

    .mobile-dropdown-item {
        padding: 0.625rem 0.5rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 360px) {
    .logo-img {
        max-width: 100px;
    }

    .mobile-menu-toggle {
        padding: 0.375rem;
    }

    .menu-line {
        width: 20px;
    }
}

/* iOS Viewport Fix */
@supports (-webkit-touch-callout: none) {
    .mobile-nav {
        height: -webkit-fill-available;
        height: fill-available;
    }
}

/* Edge/IE Fixes */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
    .header {
        position: absolute;
    }
    
    .dropdown-menu {
        display: none;
    }
    
    .nav-item:hover .dropdown-menu {
        display: block;
    }
}