/* ===== HEADER HIDE/SHOW ON SCROLL STYLES ===== */

/* Base navbar styles */
.navbar {
    background: transparent !important;
    backdrop-filter: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: none;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 1050 !important;
    transform: translateY(0);
}

/* Header visible state (default and when scrolling up) */
.navbar.header-visible,
nav.navbar.header-visible,
.navbar.navbar-expand-lg.header-visible {
    transform: translateY(0) !important;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1) !important;
    opacity: 1 !important;
    visibility: visible !important;
    display: block !important;
    position: fixed !important;
    top: 0 !important;
    z-index: 1050 !important;
}

/* Header hidden state (when scrolling down) */
.navbar.header-hidden,
nav.navbar.header-hidden,
.navbar.navbar-expand-lg.header-hidden {
    transform: translateY(-100%) !important;
    background: transparent !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

/* Transparent state (at top of page) */
.navbar.navbar-transparent {
    background: transparent !important;
    backdrop-filter: none;
    border-bottom: none;
    box-shadow: none;
}

/* Logo transitions */
.navbar-brand img {
    transition: all 0.3s ease;
    height: 40px;
    width: auto;
}

/* Nav link styles for transparent state */
.navbar-transparent .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.navbar-transparent .nav-link:hover {
    color: #ffffff !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

.navbar-transparent .nav-link.active {
    color: #ffffff !important;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* Nav link styles for visible state */
.navbar.header-visible .nav-link {
    color: #212529 !important;
    font-weight: 500;
    text-shadow: none;
    transition: all 0.3s ease;
}

.navbar.header-visible .nav-link:hover {
    color: #0078d4 !important;
}

.navbar.header-visible .nav-link.active {
    color: #0078d4 !important;
    font-weight: 600;
}

/* Dropdown menu adjustments */
.navbar-transparent .dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.navbar.header-visible .dropdown-menu {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* Dropdown item styles */
.dropdown-item {
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: rgba(0, 120, 212, 0.1);
    color: #0078d4;
}

/* Button styles in navbar */
.navbar-transparent .btn-outline-primary {
    border-color: rgba(255, 255, 255, 0.5);
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.navbar-transparent .btn-outline-primary:hover {
    border-color: rgba(255, 255, 255, 0.8);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.2);
}

.navbar.header-visible .btn-outline-primary {
    border-color: #0078d4;
    color: #0078d4;
    background: transparent;
}

.navbar.header-visible .btn-outline-primary:hover {
    border-color: #0078d4;
    color: #ffffff;
    background: #0078d4;
}

/* Navbar toggler for mobile */
.navbar-transparent .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.5);
}

.navbar-transparent .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-scrolled .navbar-toggler {
    border-color: rgba(0, 0, 0, 0.1);
}

.navbar-scrolled .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 37, 41, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Language selector adjustments */
.navbar-transparent .language-selector .btn {
    border-color: rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
}

.navbar-transparent .language-selector .btn:hover {
    border-color: rgba(255, 255, 255, 0.6);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.2);
}

.navbar-scrolled .language-selector .btn {
    border-color: #0078d4;
    color: #0078d4;
    background: transparent;
}

.navbar-scrolled .language-selector .btn:hover {
    border-color: #0078d4;
    color: #ffffff;
    background: #0078d4;
}

/* Theme toggle adjustments */
.navbar-transparent .theme-toggle-header .btn {
    border-color: rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
}

.navbar-transparent .theme-toggle-header .btn:hover {
    border-color: rgba(255, 255, 255, 0.6);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.2);
}

.navbar.header-visible .theme-toggle-header .btn {
    border-color: #0078d4;
    color: #0078d4;
    background: transparent;
}

.navbar.header-visible .theme-toggle-header .btn:hover {
    border-color: #0078d4;
    color: #ffffff;
    background: #0078d4;
}

/* Smooth transitions for all navbar elements */
.navbar * {
    transition: all 0.3s ease;
}

/* Dark mode compatibility */
[data-theme="dark"] .navbar-scrolled {
    background: rgba(30, 30, 30, 0.95) !important;
    border-bottom-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .navbar-scrolled .nav-link {
    color: #ffffff !important;
}

[data-theme="dark"] .navbar-scrolled .nav-link:hover,
[data-theme="dark"] .navbar-scrolled .nav-link.active {
    color: #4fc3f7 !important;
}

[data-theme="dark"] .navbar-scrolled .dropdown-menu {
    background: rgba(30, 30, 30, 0.98);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .navbar-scrolled .btn-outline-primary {
    border-color: #4fc3f7;
    color: #4fc3f7;
}

[data-theme="dark"] .navbar-scrolled .btn-outline-primary:hover {
    background: #4fc3f7;
    color: #000000;
}

/* Mobile responsiveness */
@media (max-width: 991px) {
    .navbar-transparent,
    .navbar-scrolled {
        background: rgba(255, 255, 255, 0.95) !important;
        backdrop-filter: blur(10px);
    }
    
    .navbar-transparent .nav-link {
        color: #212529 !important;
        text-shadow: none;
    }
    
    .navbar-transparent .nav-link:hover,
    .navbar-transparent .nav-link.active {
        color: #0078d4 !important;
    }
    
    [data-theme="dark"] .navbar-transparent,
    [data-theme="dark"] .navbar-scrolled {
        background: rgba(30, 30, 30, 0.95) !important;
    }
    
    [data-theme="dark"] .navbar-transparent .nav-link {
        color: #ffffff !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .navbar-transparent {
        background: rgba(0, 0, 0, 0.8) !important;
    }
    
    .navbar-transparent .nav-link {
        color: #ffffff !important;
        text-shadow: none;
    }
    
    .navbar-scrolled {
        background: #ffffff !important;
        border-bottom: 2px solid #000000;
    }
    
    .navbar-scrolled .nav-link {
        color: #000000 !important;
    }
}

/* Reduce motion support */
@media (prefers-reduced-motion: reduce) {
    .navbar,
    .navbar *,
    .navbar-brand img {
        transition: none !important;
    }
}