/* ================================================
   4 SEASONS - RESPONSIVE HEADER (Mobile-First)
   Professional, Consistent, Accessible Design
   ================================================ */

/* iOS Rubber-Band Scroll Fix */
html, body {
    background-color: #ffffff;   /* voorkomt doorschijn bij rubber-band scroll iOS */
}

/* CSS Variables for Header Consistency Across All Pages */
:root {
    /* Header Dimensions */
    --header-height: 75px;
    --header-height-tablet: 80px;
    --header-height-desktop: 85px;
    
    /* Colors - Navy Blue Branding - WCAG AA Compliant */
    --header-bg: #ffffff;
    --header-border: #e5e7eb;
    --header-text: #000000;
    --header-text-hover: #0d47a1;
    --button-primary: #0d47a1;
    --button-primary-hover: #0a3a7f;
    --button-primary-active: #081e47;
    
    /* Typography */
    --header-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --header-font-size: 15px;
    --header-font-size-tablet: 15px;
    --header-font-size-desktop: 16px;
    --header-font-weight: 500;
    --header-font-weight-bold: 600;
    
    /* Spacing */
    --header-padding-x: 1rem;
    --header-padding-x-tablet: 1.5rem;
    --header-padding-x-desktop: 2rem;
    --header-gap: 1rem;
    --header-gap-desktop: 2rem;
    
    /* Effects */
    --header-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --header-shadow-active: 0 4px 12px rgba(0, 0, 0, 0.12);
    --header-backdrop: saturate(180%) blur(12px);
    
    /* Animation */
    --header-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================================================
   BASE HEADER STYLES (MOBILE-FIRST)
   ================================================ */

.nav {
    position: -webkit-sticky;    /* Safari-prefix */
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #ffffff !important;          /* FORCE white on ALL devices */
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    height: 75px;
    min-height: 75px;
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--header-padding-x);
    height: 100%;
    gap: var(--header-gap);
    
    /* Ensure proper vertical centering on all devices */
    min-height: var(--header-height);
}

/* ================================================
   LOGO BUTTON - Robust, Protected Container
   Master CSS: Overrides ALL global picture/img rules
   Strategy: flex container with width:auto + overflow:visible
   ================================================ */

.navbar-brand.logo-button {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 8px 12px !important;
    border-radius: 5px !important;
    cursor: pointer !important;
    width: auto !important;                    /* Dwing width af op basis van logo */
    max-width: none !important;                /* Geen verborgen restricties */
    background-color: transparent !important;  /* Transparante knop op witte header */
    overflow: visible !important;              /* Laat niets afsnijden */
    border: none !important;                   /* Geen button borders */
    text-decoration: none !important;
    flex-shrink: 0;                            /* Niet krimpen in flex container */
    order: -1;                                 /* Logo eerste element */
    line-height: 0;                            /* Verwijder baseline spacing */
}

/* Logo afbeelding binnen de knop */
.navbar-brand.logo-button img {
    height: 54px !important;                   /* Mobile (75px header) */
    width: auto !important;                    /* Schaal automatisch */
    max-width: 280px !important;               /* Ruimte voor volledige tekst op desktop */
    max-height: none !important;
    object-fit: contain !important;
    display: block !important;
    border: none !important;
}
/* ================================================
   NAVIGATION LINKS (MOBILE - HIDDEN BY DEFAULT)
   ================================================ */

.nav-links {
    /* Hidden on mobile */
    display: none;
    list-style: none;
    align-items: center;
    gap: var(--header-gap);
    margin: 0;
    padding: 0;
}

.nav-links a,
.nav-links a:link,
.nav-links a:visited {
    color: #000000;
    text-decoration: none;
    font-size: var(--header-font-size);
    font-weight: var(--header-font-weight);
    transition: var(--header-transition);
    padding: 0.5rem 0;
    user-select: none;
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--header-text-hover);
    outline: 2px solid var(--header-text-hover);
    outline-offset: 2px;
}

/* ================================================
   BUTTON STYLING (Offerte)
   ================================================ */

.btn-nav {
    background-color: var(--button-primary);
    color: #ffffff;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-weight: var(--header-font-weight-bold);
    font-size: var(--header-font-size);
    transition: var(--header-transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(13, 71, 161, 0.15);
}

.btn-nav:hover,
.btn-nav:focus {
    background-color: var(--button-primary-hover);
    box-shadow: 0 4px 12px rgba(13, 71, 161, 0.25);
    transform: translateY(-2px);
}

.btn-nav:active {
    background-color: var(--button-primary-active);
    transform: translateY(0);
}

.btn-nav:focus {
    outline: 2px solid var(--button-primary-hover);
    outline-offset: 2px;
}

/* ================================================
   BUTTON SPECIFICITY - Override .nav-links a styles
   High-specificity selector ensures button appearance
   ================================================ */

.nav-links a.btn-nav,
.nav-links a.btn-nav:link,
.nav-links a.btn-nav:visited {
    color: #ffffff;
    background-color: #0d47a1;
    -webkit-text-fill-color: #ffffff !important;  /* iOS Safari quirk: KEEP */
}

.nav-links a.btn-nav:hover,
.nav-links a.btn-nav:focus {
    background-color: #0a3a7f;
    color: #ffffff;
}

.nav-links a.btn-nav:active {
    background-color: #081e47;
    color: #ffffff;
}

/* ================================================
   HAMBURGER MENU (MOBILE)
   ================================================ */

.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    width: 28px;
    height: 20px;
    background: none !important;  /* KEEP: utility class pattern */
    border: none;
    cursor: pointer;
    padding: 0;
    margin: 0;
    flex-shrink: 0;
    z-index: 1001;
    min-width: 48px;
    min-height: 48px;
    position: relative;
}

.hamburger:focus {
    outline: 2px solid var(--header-text-hover);
    outline-offset: 2px;
    border-radius: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 3px;
    background-color: #000000;  /* removed !important: direct element style is specific enough */
    border-radius: 2px;
    transition: var(--header-transition);
    transform-origin: center center;
}

/* Hamburger Animation - Active State */
.hamburger.active span:nth-child(1) {
    transform: translateY(8.75px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-8.75px) rotate(-45deg);
}



/* ================================================
   MOBILE MENU DROPDOWN (HIDDEN BY DEFAULT)
   ================================================ */

@media (max-width: 767px) {
    /* Mobile menu overlay - slides down from header */
    .nav-links {
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        
        /* Force white background on all mobile browsers */
        background-color: #ffffff !important;
        background: #ffffff !important;
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
        
        border-bottom: 1px solid var(--header-border);
        padding: 0;
        max-height: calc(100vh - var(--header-height));
        overflow-y: auto;
        
        /* Hidden by default */
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        pointer-events: none;
        
        transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
        
        box-shadow: var(--header-shadow-active);
    }
    
    /* Show mobile menu when active */
    .nav-links.active {
        display: flex;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }
    
    /* Mobile menu items */
    .nav-links li {
        border-bottom: 1px solid var(--header-border);
        margin: 0;
    }
    
    .nav-links li:last-child {
        border-bottom: none;
    }
    
    .nav-links a {
        display: block;
        padding: 15px var(--header-padding-x);
        font-size: 15px;
        font-weight: 500;
    }
    
    .nav-links a:active {
        background-color: #f3f4f6;
    }
    
    /* Button in mobile menu */
    .nav-links .btn-nav {
        color: #ffffff;  /* removed !important: specificity via .nav-links .btn-nav */
        background-color: var(--button-primary);
        margin: 0.75rem var(--header-padding-x);
        padding: 0.75rem 1.5rem;
        width: calc(100% - 2rem);
        text-align: center;
    }
}

/* ================================================
   TABLET BREAKPOINT (768px - 1023px)
   ================================================ */

@media (min-width: 768px) {
    :root {
        --header-height: var(--header-height-tablet);
        --header-padding-x: var(--header-padding-x-tablet);
        --header-font-size: var(--header-font-size-tablet);
    }
    
    .nav-links {
        display: flex;
    }
    
    .hamburger {
        display: none;
    }
    
    /* Tablet: Show essential links + button */
    .nav-links {
        flex: 1;
        justify-content: flex-end;
        margin-left: auto;
    }
    
    .navbar-brand.logo-button {
        flex: 0 0 auto !important;
        order: -1;
        width: auto !important;
        min-width: 0;
    }

    .navbar-brand.logo-button img {
        height: 60px !important;   /* Tablet (80px header): ~60px logo */
        width: auto !important;
        max-width: 320px !important;
        object-fit: contain !important;
    }
}

@media (min-width: 1024px) {
    :root {
        --header-height: var(--header-height-desktop);
        --header-padding-x: var(--header-padding-x-desktop);
        --header-font-size: var(--header-font-size-desktop);
    }
    
    .nav__inner {
        gap: var(--header-gap-desktop);
    }
    
    .navbar-brand.logo-button {
        flex: 0 0 auto !important;
        order: -1;
        width: auto !important;
        min-width: 0;
    }

    .navbar-brand.logo-button img {
        height: 65px !important;   /* Desktop (85px header): ~65px logo */
        width: auto !important;
        max-width: 360px !important;
        object-fit: contain !important;
    }

    /* Desktop: Full navigation */
    .nav-links {
        gap: var(--header-gap-desktop);
        flex: 1;
        justify-content: center;
        margin-left: auto;
    }
    
    /* Perfect spacing: Logo - Nav Links - Button */
    .nav-links a {
        position: relative;
        padding: 0.5rem 0.75rem;
    }
    
    /* Underline hover effect for desktop */
    .nav-links a::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 0;
        height: 2px;
        background-color: var(--header-text-hover);
        transition: width 0.3s ease;
    }
    
    .nav-links a:hover::after {
        width: 100%;
    }
    
    /* Button gets focus before links */
    .btn-nav {
        order: 10;
    }
}

/* ================================================
   ACCESSIBILITY & PRINT
   ================================================ */

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .nav,
    .nav-links,
    .logo img,
    .hamburger span,
    .btn-nav,
    .nav-links a::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .nav {
        position: static;
    }
    
    .hamburger {
        display: none;
    }
    
    .nav-links {
        display: none;
    }
}

/* ================================================
   HIGH CONTRAST MODE SUPPORT
   ================================================ */

@media (prefers-contrast: more) {
    .nav {
        border-bottom: 2px solid var(--header-text);
    }
    
    .nav-links a {
        font-weight: var(--header-font-weight-bold);
    }
    
    .btn-nav {
        border: 2px solid transparent;
    }
}

/* ================================================
   DARK MODE SUPPORT (Optional)
   ================================================ */

@media (prefers-color-scheme: dark) {
    :root {
        --header-bg: #1a1a2e;
        --header-border: #334155;
        --header-text: #f8fafc;
        --header-text-hover: #60a5fa;
        --button-primary: #1e40af;
        --button-primary-hover: #1e3a8a;
    }
    
    .nav {
        background: rgba(26, 26, 46, 0.95);
    }
    
    .nav-links {
        background: rgba(26, 26, 46, 0.98);
    }
}