/* ===== NAVIGATION STYLES ===== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 0;
    /* Safe area for notched devices */
    padding-top: env(safe-area-inset-top, 0);
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo-img {
    height: 28px;
    width: auto;
    display: block;
}

.nav-logo-text {
    margin: 0;
    font-family: var(--font-family-logo);
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.nav-menu li {
    position: relative;
}

.nav-link {
    color: #333;
    font-weight: 500;
    font-size: 1rem;
    text-decoration: none;
    padding: 0.5rem 0;
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #a0aec0 0%, #cbd5e0 100%);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: #4a5568;
}

/* Hide mobile auth on desktop (must be before media query) */
.nav-auth-mobile {
    display: none;
}

/* Language Selector */
.language-selector {
    padding: 0.5rem 0.75rem;
    background: rgba(45, 55, 72, 0.1);
    border: 1px solid rgba(45, 55, 72, 0.2);
    border-radius: 6px;
    color: #2d3748;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-right: 1rem;
}

.language-selector:hover {
    background: rgba(45, 55, 72, 0.15);
    border-color: rgba(45, 55, 72, 0.3);
}

.language-selector option {
    background: white;
    color: #2d3748;
    padding: 0.5rem;
}

/* Mobile Language Selector (inside hamburger menu) */
.language-selector-mobile {
    display: none;
}

@media (max-width: 1024px) {
    .language-selector-mobile {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .language-selector-mobile .language-selector-wrapper {
        width: 100%;
    }
    
    .language-selector-mobile .language-selector {
        width: 100%;
        padding: 0.75rem 1rem;
        background: rgba(45, 55, 72, 0.08);
        border: 1px solid rgba(45, 55, 72, 0.15);
        border-radius: 8px;
        font-size: 1rem;
        min-height: 48px;
        text-align: center;
    }
    
    .language-selector-mobile .language-selector:hover {
        background: rgba(45, 55, 72, 0.12);
    }
}

/* Hamburger Menu */
.hamburger {
    flex-direction: column;
    cursor: pointer;
    padding: 0.75rem;
    gap: 5px;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
    align-items: center;
    display: flex; /* Default: visible (mobile-first) */
}

/* Desktop: hide hamburger */
@media (min-width: 1025px) {
    .hamburger {
        display: none !important;
    }
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    border-radius: 3px;
    transition: all 0.3s ease;
    transform-origin: center;
}

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

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
@media (max-width: 1024px) {
    .nav-container {
        height: 60px;
        padding: 0 1rem;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

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

    .nav-menu li {
        text-align: center;
    }

    .nav-link {
        font-size: 1.2rem;
        padding: 1rem 0;
        display: block;
    }

    /* Hide underline effect on mobile */
    .nav-link::after {
        display: none;
    }

    /* Hamburger already visible by default (mobile-first) */

    /* Hide desktop auth buttons, show mobile ones */
    .nav-auth-desktop {
        display: none;
    }

    .nav-auth-mobile {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        margin-top: 1rem;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
    }

    .nav-auth-mobile .btn-signin,
    .nav-auth-mobile .btn-register {
        width: 100%;
        padding: 1rem 2rem;
        font-size: 1rem;
        min-height: 48px;
        border-radius: 8px;
    }

    .nav-auth-mobile .btn-signin {
        background: transparent;
        color: #2d3748;
        border: 2px solid #a0aec0;
    }

    .nav-auth-mobile .btn-register {
        background: linear-gradient(135deg, #a0aec0 0%, #cbd5e0 100%);
        color: white;
        border: none;
    }
}

/* Navigation Progress Indicator */
.nav-progress {
    position: fixed;
    top: 79px;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(160, 174, 192, 0.2);
    z-index: 999;
}

@media (max-width: 1024px) {
    .nav-progress {
        top: 59px;
    }
}

/* Hide progress bar in landscape mode - too distracting on short viewports */
@media (max-height: 500px), (max-width: 896px) and (orientation: landscape) {
    .nav-progress {
        display: none;
    }
}

.nav-progress-bar {
    height: 100%;
    background: linear-gradient(135deg, #a0aec0 0%, #cbd5e0 100%);
    width: 0%;
    transition: width 0.1s ease;
}