/** * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 * 
 * Premium Navbar Styling
 * Stripe/Vercel-inspired navigation with refined glassmorphism,
 * modern typography, and polished micro-interactions.
 */

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    /* Navbar dimensions */
/*    --navbar-height: 72px;*/
    --navbar-height: 30px;
    --navbar-height-scrolled: 64px;
    --navbar-height-mobile: 30px;
    
    /* Content offset (navbar + buffer for visual breathing room) */
    --content-offset: calc(var(--navbar-height) + 8px);        /* 80px */
    --content-offset-mobile: calc(var(--navbar-height-mobile) + 8px); /* 72px */
    
    /* Colors */
    --navbar-bg: rgba(255, 255, 255, 0.78);
    --navbar-bg-scrolled: rgba(255, 255, 255, 0.92);
    --navbar-border: rgba(0, 0, 0, 0.06);
    --navbar-text: #1a1a2e;
    --navbar-text-muted: #64748b;
    --navbar-accent: #237465;
    --navbar-accent-light: rgba(35, 116, 101, 0.08);
    --navbar-accent-medium: rgba(35, 116, 101, 0.15);
    
    /* Typography */
    --navbar-font: 'Josefin Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --navbar-font-size: 15px;
    --navbar-font-weight: 500;
    --navbar-letter-spacing: 0.2px;
    
    /* Transitions */
    --navbar-transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --navbar-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --navbar-transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Blur */
    --navbar-blur: 16px;
    --navbar-blur-scrolled: 20px;
}

/* ========================================
   Navbar Container
   ======================================== */
#mainNav.navbar-premium {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    height: var(--navbar-height);
    padding: 0 24px;
    background: var(--navbar-bg);
    backdrop-filter: blur(var(--navbar-blur));
    -webkit-backdrop-filter: blur(var(--navbar-blur));
    border-bottom: 1px solid var(--navbar-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
    transition: 
        height var(--navbar-transition-slow),
        background var(--navbar-transition),
        backdrop-filter var(--navbar-transition),
        box-shadow var(--navbar-transition);
    font-family: var(--navbar-font);
}

/* Scrolled state */
#mainNav.navbar-premium.scrolled {
    height: var(--navbar-height-scrolled);
    background: var(--navbar-bg-scrolled);
    backdrop-filter: blur(var(--navbar-blur-scrolled));
    -webkit-backdrop-filter: blur(var(--navbar-blur-scrolled));
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
}

/* Container fluid adjustments */
#mainNav.navbar-premium > .container-fluid {
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0;
    max-width: 1800px;
    margin: 0 auto;
}

/* ========================================
   Logo Area
   ======================================== */
#mainNav.navbar-premium .navbar-brand-logo {
    flex-shrink: 0;
    margin-right: 32px;
    position: relative;
    /* Logo is displayed via img element in HTML, no background needed */
    background: none !important;
    height: 55px;
    display: flex;
    align-items: center;
}

#mainNav.navbar-premium .navbar-brand-logo .navbar-brand {
    display: flex;
    align-items: center;
    height: 100%;
}

#mainNav.navbar-premium .navbar-brand-logo .navbar-brand img {
    height: 30px;
    width: auto;
}

#mainNav.navbar-premium .navbar-brand-logo::after {
    content: '';
    position: absolute;
    right: -16px;
    top: 50%;
    transform: translateY(-50%);
    height: 28px;
    width: 1px;
    background: var(--navbar-border);
}

/* ========================================
   Navigation Collapse
   ======================================== */
#mainNav.navbar-premium .navbar-collapse {
    height: 100%;
    display: flex; /* Default to flex on desktop */
    align-items: center;
    justify-content: space-between;
    flex: 1;
    flex-basis: auto;
}

/* Override Bootstrap collapse behavior - only on screens >=1600px */
@media (min-width: 1600px) {
    #mainNav.navbar-premium .navbar-collapse,
    #mainNav.navbar-premium .navbar-collapse.collapse {
        display: flex !important;
    }
}

/* Hide desktop navigation on screens below 1600px */
@media (max-width: 1599px) {
    #mainNav.navbar-premium .navbar-collapse {
        display: none !important;
    }
}

#mainNav.navbar-premium .navbar-nav {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-direction: row;
}

/* ========================================
   Primary Navigation Group
   ======================================== */
.navbar-nav-primary {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ========================================
   Secondary Navigation Group
   ======================================== */
.navbar-nav-secondary {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
    padding-left: 24px;
    position: relative;
}

.navbar-nav-secondary::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 28px;
    width: 1px;
    background: var(--navbar-border);
}

/* ========================================
   CTA Group
   ======================================== */
.navbar-nav-cta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 24px;
    padding-left: 24px;
    position: relative;
}

.navbar-nav-cta::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 28px;
    width: 1px;
    background: var(--navbar-border);
}

/* ========================================
   Nav Items - Base Styles
   ======================================== */
#mainNav.navbar-premium .nav-item {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

#mainNav.navbar-premium .nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 16px;
    font-family: var(--navbar-font);
    font-size: var(--navbar-font-size);
    font-weight: var(--navbar-font-weight);
    letter-spacing: var(--navbar-letter-spacing);
    line-height: 1;
    color: var(--navbar-text);
    text-decoration: none;
    text-transform: none; /* Sentence case - override uppercase */
    border-radius: 8px;
    transition: 
        color var(--navbar-transition-fast),
        background-color var(--navbar-transition-fast);
    position: relative;
    white-space: nowrap;
}

/* Remove default Bootstrap nav-link padding */
#mainNav.navbar-premium .navbar-nav .nav-link {
    padding: 0 16px;
}

/* ========================================
   Nav Items - Hover State
   ======================================== */
#mainNav.navbar-premium .nav-link:hover {
    color: var(--navbar-accent);
    background-color: var(--navbar-accent-light);
}

/* ========================================
   Nav Items - Active State
   ======================================== */
#mainNav.navbar-premium .nav-link.active,
#mainNav.navbar-premium .nav-item.active > .nav-link {
    color: var(--navbar-accent);
}

/* Active underline indicator */
#mainNav.navbar-premium .nav-link.active::after,
#mainNav.navbar-premium .nav-item.active > .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--navbar-accent);
    border-radius: 2px;
    animation: navUnderlineIn 300ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes navUnderlineIn {
    from {
        transform: scaleX(0);
        opacity: 0;
    }
    to {
        transform: scaleX(1);
        opacity: 1;
    }
}

/* ========================================
   Nav Items with Dropdowns (Mega Menu)
   ======================================== */
#mainNav.navbar-premium .nav-item.has-megamenu > .nav-link {
    gap: 8px;
}

/* Inline caret for dropdown items */
#mainNav.navbar-premium .nav-item.has-megamenu .nav-caret {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    opacity: 0.6;
    transition: transform var(--navbar-transition-fast), opacity var(--navbar-transition-fast);
    flex-shrink: 0;
}

#mainNav.navbar-premium .nav-item.has-megamenu:hover .nav-caret {
    transform: rotate(180deg);
    opacity: 0.9;
}

/* Caret for regular dropdowns (More menu) */
#mainNav.navbar-premium .nav-item.dropdown .nav-caret {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    opacity: 0.6;
    transition: transform var(--navbar-transition-fast), opacity var(--navbar-transition-fast);
    flex-shrink: 0;
}

#mainNav.navbar-premium .nav-item.dropdown.show .nav-caret {
    transform: rotate(180deg);
    opacity: 0.9;
}

/* ========================================
   Premium Dropdown Menu (More Menu)
   ======================================== */
#mainNav.navbar-premium .dropdown-menu-premium {
    min-width: 220px;
    padding: 12px;
    margin-top: 12px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 14px;
    box-shadow: 
        0 4px 6px rgba(0, 0, 0, 0.02),
        0 12px 24px rgba(0, 0, 0, 0.06),
        0 24px 48px rgba(0, 0, 0, 0.04);
    animation: dropdownFadeIn 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/*
    Hover-bridge for dropdown menus
    Prevents accidental close when moving the cursor from the toggle to the menu
    across the visual gap created by `margin-top`.
*/
#mainNav.navbar-premium .dropdown-menu-premium::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: -12px; /* Must match `.dropdown-menu-premium { margin-top }` */
    height: 12px;
}

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

/* Premium dropdown item */
#mainNav.navbar-premium .dropdown-item-premium {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--navbar-text);
    text-decoration: none;
    font-family: var(--navbar-font);
    font-size: 14px;
    font-weight: 500;
    transition: 
        background-color var(--navbar-transition-fast),
        color var(--navbar-transition-fast);
}

#mainNav.navbar-premium .dropdown-item-premium:hover {
    background-color: var(--navbar-accent-light);
    color: var(--navbar-accent);
    text-decoration: none;
}

#mainNav.navbar-premium .dropdown-item-premium.featured {
    color: var(--navbar-accent);
}

#mainNav.navbar-premium .dropdown-item-premium.featured:hover {
    background-color: var(--navbar-accent);
    color: #ffffff;
}

/* Dropdown item icon */
#mainNav.navbar-premium .dropdown-item-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 8px;
    font-size: 14px;
    color: var(--navbar-accent);
    flex-shrink: 0;
    transition: 
        background var(--navbar-transition-fast),
        color var(--navbar-transition-fast);
}

#mainNav.navbar-premium .dropdown-item-premium:hover .dropdown-item-icon {
    background: var(--navbar-accent);
    color: #ffffff;
}

#mainNav.navbar-premium .dropdown-item-premium.featured .dropdown-item-icon {
    background: var(--navbar-accent-light);
}

#mainNav.navbar-premium .dropdown-item-premium.featured:hover .dropdown-item-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

/* Dropdown item text */
#mainNav.navbar-premium .dropdown-item-text {
    flex: 1;
}

/* Premium divider */
#mainNav.navbar-premium .dropdown-divider-premium {
    height: 1px;
    margin: 8px 14px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.08), transparent);
}

/* ========================================
   Social Icons
   ======================================== */
#mainNav.navbar-premium .navbar-social {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: 16px;
    padding-right: 16px;
    position: relative;
}

#mainNav.navbar-premium .navbar-social::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 24px;
    width: 1px;
    background: var(--navbar-border);
}

#mainNav.navbar-premium .navbar-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    color: var(--navbar-text-muted);
    transition: 
        color var(--navbar-transition-fast),
        background-color var(--navbar-transition-fast);
}

#mainNav.navbar-premium .navbar-social a:hover {
    color: var(--navbar-accent);
    background-color: var(--navbar-accent-light);
}

#mainNav.navbar-premium .navbar-social a i {
    font-size: 16px !important;
}

/* ========================================
   CTA Buttons
   ======================================== */
/* Primary CTA - Upload RAW */
#mainNav.navbar-premium .btn-navbar-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 20px;
    font-family: var(--navbar-font);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    color: #ffffff;
    background: var(--navbar-accent);
    border: none;
    border-radius: 8px;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(35, 116, 101, 0.25);
    transition: 
        transform var(--navbar-transition-fast),
        box-shadow var(--navbar-transition-fast),
        background-color var(--navbar-transition-fast);
}

#mainNav.navbar-premium .btn-navbar-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(35, 116, 101, 0.35);
    background: #1a574c;
    color: #ffffff;
    text-decoration: none;
}

#mainNav.navbar-premium .btn-navbar-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(35, 116, 101, 0.25);
}

/* Secondary CTA - Dashboard/Login */
#mainNav.navbar-premium .btn-navbar-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 20px;
    font-family: var(--navbar-font);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    color: var(--navbar-accent);
    background: transparent;
    border: 1.5px solid var(--navbar-accent);
    border-radius: 8px;
    text-decoration: none;
    transition: 
        color var(--navbar-transition-fast),
        background-color var(--navbar-transition-fast),
        border-color var(--navbar-transition-fast);
}

#mainNav.navbar-premium .btn-navbar-secondary:hover {
    color: #ffffff;
    background: var(--navbar-accent);
    border-color: var(--navbar-accent);
    text-decoration: none;
}

/* Text link style for secondary nav items */
#mainNav.navbar-premium .nav-link-text {
    height: auto;
    padding: 8px 12px;
    font-size: 14px;
    color: var(--navbar-text-muted);
}

#mainNav.navbar-premium .nav-link-text:hover {
    color: var(--navbar-accent);
    background: transparent;
}

/* ========================================
   Mobile Toggle Button
   ======================================== */
#mainNav.navbar-premium .navbar-toggler,
#mainNav.navbar-premium #mobileNavToggle {
    width: 44px;
    height: 44px;
    padding: 0;
    display: none; /* Hidden by default on large desktop (>=1600px) */
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1.5px solid var(--navbar-border);
    border-radius: 10px;
    color: var(--navbar-text);
    transition: 
        background-color var(--navbar-transition-fast),
        border-color var(--navbar-transition-fast),
        color var(--navbar-transition-fast);
}

#mainNav.navbar-premium .navbar-toggler:hover,
#mainNav.navbar-premium #mobileNavToggle:hover {
    background: var(--navbar-accent-light);
    border-color: var(--navbar-accent);
    color: var(--navbar-accent);
}

#mainNav.navbar-premium .navbar-toggler i,
#mainNav.navbar-premium #mobileNavToggle i {
    font-size: 18px;
}

/* Ensure mobile toggle is visible below 1600px - override any Bootstrap defaults */
@media (max-width: 1599.98px) {
    .navbar-expand-custom #mobileNavToggle,
    .navbar.navbar-expand-custom #mobileNavToggle,
    #mainNav #mobileNavToggle {
        display: flex !important;
    }
    
    /* Keep responsive toggle hidden on all screens below 1600px */
    .navbar-expand-custom #responsiveNavToggle,
    #mainNav #responsiveNavToggle {
        display: none !important;
    }
}

/* ========================================
   Responsive - Large Desktop (1600px+)
   ======================================== */
@media (min-width: 1600px) {
    #mainNav.navbar-premium {
        padding: 0 48px;
    }
    
    #mainNav.navbar-premium .navbar-brand-logo {
        margin-right: 48px;
    }
    
    #mainNav.navbar-premium .nav-link {
        padding: 0 18px;
    }
    
    /* Hide all togglers on large desktop */
    #mainNav.navbar-premium .navbar-toggler {
        display: none !important;
    }
    
    /* Ensure navbar is always shown on large desktop */
    #mainNav.navbar-premium .navbar-collapse,
    #mainNav.navbar-premium .navbar-collapse.collapse {
        display: flex !important;
    }
}

/* ========================================
   Responsive - Tablet/Mobile (<1600px)
   ======================================== */
@media (max-width: 1599px) {
    #mainNav.navbar-premium {
        height: var(--navbar-height-mobile);
        padding: 0 16px;
    }
    
    #mainNav.navbar-premium > .container-fluid {
        justify-content: space-between;
    }
    
    #mainNav.navbar-premium .navbar-brand-logo {
        margin-right: 0;
    }
    
    #mainNav.navbar-premium .navbar-brand-logo::after {
        display: none;
    }
    
    /* Hide desktop nav on mobile */
    #mainNav.navbar-premium .navbar-collapse,
    #mainNav.navbar-premium .navbar-collapse.collapse {
        display: none !important;
    }
    
    /* Show ONLY the mobile toggle - hide the responsive toggle */
    #mainNav.navbar-premium #mobileNavToggle {
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    /* Ensure responsive toggle stays hidden on mobile */
    #mainNav.navbar-premium #responsiveNavToggle {
        display: none !important;
    }
}

/* ========================================
   Responsive - Small Mobile (<480px)
   ======================================== */
@media (max-width: 479px) {
    #mainNav.navbar-premium {
        padding: 0 12px;
    }
    
    #mainNav.navbar-premium .navbar-brand-logo {
        width: 140px !important;
        background-size: 140px !important;
    }
}

/* ========================================
   Accessibility
   ======================================== */
#mainNav.navbar-premium .nav-link:focus-visible {
    outline: 2px solid var(--navbar-accent);
    outline-offset: 2px;
}

#mainNav.navbar-premium .btn-navbar-primary:focus-visible,
#mainNav.navbar-premium .btn-navbar-secondary:focus-visible {
    outline: 2px solid var(--navbar-accent);
    outline-offset: 2px;
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    #mainNav.navbar-premium,
    #mainNav.navbar-premium .nav-link,
    #mainNav.navbar-premium .btn-navbar-primary,
    #mainNav.navbar-premium .btn-navbar-secondary {
        transition: none;
    }
    
    @keyframes navUnderlineIn {
        from, to {
            transform: scaleX(1);
            opacity: 1;
        }
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    #mainNav.navbar-premium {
        display: none;
    }
}