/**
 * Header Styles — Enhanced
 */

/* Main Header */
#main-header {
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

#main-header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
    background: rgba(255, 255, 255, 0.97);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

#main-header.hidden-header {
    transform: translateY(-100%);
}

/* Navigation Links */
.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.1rem;
    color: #475569;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 0.88rem;
    text-decoration: none;
    transition: color 0.25s ease, background 0.25s ease;
    white-space: nowrap;
    border-radius: 8px;
}

.nav-link:hover {
    color: #1d4ed8;
    background: rgba(37, 99, 235, 0.04);
}

.nav-link.active {
    color: #1d4ed8;
    font-weight: 600;
    background: rgba(37, 99, 235, 0.06);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2.5px;
    background: linear-gradient(to right, #2563eb, #7c3aed);
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 20px;
}

.nav-link.active::after {
    width: 24px;
}

/* Mega Menu */
.mega-menu {
    box-shadow: 0 25px 60px -12px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: 16px;
    overflow: hidden;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    animation: megaMenuIn 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes megaMenuIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile Menu */
#mobile-menu {
    box-shadow: 10px 0 40px rgba(0, 0, 0, 0.15);
}

#mobile-menu.open {
    transform: translateX(0);
}

#mobile-menu-backdrop.show {
    display: block;
    animation: fade-in 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Search Overlay */
#search-overlay {
    animation: fade-in 0.3s ease;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

#search-overlay.show {
    display: flex;
}

/* Header Buttons */
.btn-header {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.4rem;
    border-radius: 12px;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-header:hover::before {
    left: 100%;
}

.btn-header-primary {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: white;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.btn-header-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.4);
    color: white;
}

.btn-header-primary:active {
    transform: translateY(0) scale(0.98);
}

/* Dropdown Animations */
.dropdown-enter {
    animation: slide-down 0.2s ease-out;
}

@keyframes slide-down {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Logo Animation */
.logo-wrapper {
    transition: transform 0.3s ease;
}

.logo-wrapper:hover {
    transform: scale(1.03);
}

/* Nav Badge */
.nav-badge {
    position: absolute;
    top: -2px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: #ef4444;
    color: white;
    border-radius: 20px;
    font-size: 0.65rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    animation: pulse-badge 2s ease-in-out infinite;
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.4);
    font-family: 'Poppins', sans-serif;
}

@keyframes pulse-badge {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.12); }
}

/* Mobile Menu Toggle Animation */
#mobile-menu-toggle {
    position: relative;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1.5px solid #e2e8f0;
    background: #ffffff;
    cursor: pointer;
    transition: all 0.25s ease;
}

#mobile-menu-toggle:hover {
    border-color: #2563eb;
    background: rgba(37, 99, 235, 0.04);
}

#mobile-menu-toggle .bar {
    display: block;
    width: 20px;
    height: 2px;
    background: #475569;
    margin: 3.5px 0;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

#mobile-menu-toggle.active {
    border-color: #2563eb;
    background: rgba(37, 99, 235, 0.06);
}

#mobile-menu-toggle.active .bar {
    background: #1d4ed8;
}

#mobile-menu-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

#mobile-menu-toggle.active .bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#mobile-menu-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Header Top Bar */
.top-bar {
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    color: white;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.82rem;
    letter-spacing: 0.01em;
}

.top-bar a {
    color: rgba(255, 255, 255, 0.85);
    transition: color 0.2s ease;
}

.top-bar a:hover {
    color: #fed7aa;
}

/* Search Form in Header */
.header-search {
    position: relative;
    display: flex;
    align-items: center;
    background: #f1f5f9;
    border-radius: 12px;
    padding: 4px;
    border: 1.5px solid transparent;
    transition: all 0.3s ease;
}

.header-search:focus-within {
    background: white;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.1);
    border-color: #2563eb;
}

.header-search input {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.88rem;
    background: transparent;
    border: none;
    outline: none;
    padding: 0.45rem 0.8rem;
    flex: 1;
    min-width: 180px;
    color: #1e293b;
}

.header-search input::placeholder {
    color: #94a3b8;
}

/* Active Page Indicator */
.nav-link.active {
    color: #1d4ed8;
    font-weight: 600;
}

.nav-link.active::after {
    width: 24px;
    background: linear-gradient(to right, #2563eb, #7c3aed);
    height: 2.5px;
}

/* Responsive */
@media (max-width: 1024px) {
    #main-header {
        backdrop-filter: blur(20px);
    }

    .nav-link {
        padding: 0.7rem 1rem;
        font-size: 0.9rem;
    }

    .nav-link::after {
        display: none;
    }

    .nav-link.active {
        background: rgba(37, 99, 235, 0.08);
        border-left: 3px solid #2563eb;
        border-radius: 0 8px 8px 0;
    }
}

@media (max-width: 400px) {
    .btn-header {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }

    .header-search input {
        min-width: 140px;
        font-size: 0.82rem;
    }
}

/* Focus visible */
.nav-link:focus-visible,
.btn-header:focus-visible,
#mobile-menu-toggle:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

/* Selection */
#main-header ::selection {
    background: rgba(37, 99, 235, 0.15);
    color: #1d4ed8;
}