/* ===========================================================================
   Header Styles — Mobile-First
   =========================================================================== 
   
   Header Structure:
   - Logo (hidden by default, shown on index page only)
   - Hero text (index page only, controlled by $show_hero_text)
   - Navigation (unified across all pages, expanded by default on mobile)
   
   Column-Specific Color System:
   - POOLS column: Blue glow (--glow-blue, --primary-blue)
   - SPAS column: Red glow (--glow-red, --error-color)
   - EXTRAS column: Green glow (--glow-green, --success-color-solid)
   
   Mobile: Column-specific colors applied by default to nav items
   Desktop: Column-specific colors only on hover
   =========================================================================== */

/* ===========================================================================
   BASE STYLES (Mobile First)
   =========================================================================== */

/* Header canvas wrapper - positioned over header */
.canvas-wrapper {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
    z-index: var(--z-canvas);
    pointer-events: none;
    background: var(--page-background-strong);
    will-change: transform;
    transform: translateZ(0);
    isolation: isolate;
    border-radius: var(--border-radius);
}

#ripple-canvas {
    width: 100%;
    height: 100%;
    display: block;
    pointer-events: none;
    background-color: transparent;
    position: absolute;
    top: 0;
    left: 0;
    z-index: var(--z-canvas);
    will-change: transform;
    transform: translateZ(0);
}

@media (prefers-reduced-motion: reduce) {
    #ripple-canvas {
        display: none;
    }
}

.header {
    position: relative;
    z-index: var(--z-header);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
    height: auto;
    padding: var(--spacing-unit);
    isolation: isolate;
    border: var(--border-std);
    border-radius: var(--border-radius);
    gap: var(--spacing-unit);
}

/* ===========================================================================
   LOGO STYLES
   =========================================================================== */

.logo {
    display: none; /* Hidden by default - mobile-first */
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: var(--z-header);
    width: var(--logo-size);
    height: var(--logo-size);
    max-width: var(--logo-size);
    transition: filter 0.3s ease, transform 0.3s ease;
    border-radius: var(--border-radius-full);
    isolation: isolate;
    margin: auto;
    padding: 0;
    overflow: hidden;
    flex: 0 0 auto;
    align-self: center;
}

/* Show logo only on index page */
.index-page .logo {
    display: flex;
}

.logo-link {
    width: 100%;
    height: 100%;
    border-radius: var(--border-radius-full);
    transition: filter 0.3s ease, transform 0.3s ease;
    margin: 0;
    padding: 0;
    position: relative;
    z-index: var(--z-header);
}

.logo-image {
    display: block;
    width: 100%;
    height: 100%;
    max-width: var(--logo-size);
    max-height: var(--logo-size);
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    padding: 0;
    position: relative;
    z-index: var(--z-header);
    overflow: hidden;
    object-fit: contain;
    object-position: center;
    border-radius: var(--border-radius-full);
    border: var(--border-std);
    border-color: var(--primary-blue);
    background: var(--glass-effect);
    box-shadow: var(--box-shadow);
    filter: brightness(1.0);
    transition: transform var(--transition-normal) ease, filter var(--transition-normal) ease;
    will-change: transform;
}

.logo-image:hover {
    transform: scale(clamp(1.02, 1.03, 1.05));
    will-change: transform;
    filter: brightness(1.4);
}

.hero-heading {
    font-weight: var(--font-weight-bold);
    text-align: center;
    padding: var(--spacing-unit);
    margin: var(--spacing-unit);
    font-size: clamp(1rem, 2.5vw + 0.7rem, 1.8rem);
    line-height: 1.2;
    text-shadow: var(--text-shadow);
}

/* ===========================================================================
   HERO TEXT - Only shown on index page
   =========================================================================== */

.hero-text {
    display: none; /* Hidden by default on all pages */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    text-shadow: var(--text-shadow);
    font-style: italic;
    text-align: center;
    z-index: var(--z-base);
    width: 100%;
}

/* Only show hero-text on index page */
.index-page .hero-text {
    display: flex;
}

.hero-text h1 {
    font-size: clamp(1.2rem, 3.5vw + 0.8rem, 2.2rem);
    line-height: 1.2;
    margin: 0;
    text-shadow: var(--text-shadow);
}

/* ===========================================================================
   UNIFIED HEADER LAYOUT - Same for All Pages
   =========================================================================== */

.header-content-grid {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.hero-nav-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.main-nav {
    position: relative;
    z-index: var(--z-nav);
    width: 95%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 var(--spacing-sm);
    margin: var(--spacing-sm) auto;
    justify-content: center;
}

/* ===========================================================================
   NAVIGATION ITEMS
   =========================================================================== */

.nav-item {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: var(--z-nav);
    width: 100%;
    margin: var(--spacing-xs) auto;
    border: var(--border-std);
    border-radius: var(--border-radius);
    transition: transform var(--transition-normal) var(--transition-smooth), 
                box-shadow var(--transition-normal) var(--transition-smooth);
    min-height: var(--nav-btn-height);
    padding: 0;
    max-width: none;
    will-change: transform;
    backdrop-filter: blur(10px);
    box-shadow: none; /* No box-shadow by default, only on hover */
}

.nav-item:hover {
    transform: var(--button-hover-transform);
    box-shadow: var(--glow-blue);
}

.nav-item a {
    align-content: center;
    align-items: center;
    justify-content: center;
    display: flex;
    width: 100%;
    min-height: var(--nav-btn-height);
    padding: var(--nav-btn-padding);
    text-decoration: none;
    background: none;
    border: none;
    font-family: var(--font-ui);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    text-shadow: var(--text-shadow);
}

/* ===========================================================================
   MOBILE NAVIGATION TOGGLE (Hamburger Menu)
   =========================================================================== */

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: clamp(44px, 50px, 56px);
    height: clamp(44px, 50px, 56px);
    min-width: 44px;
    min-height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: relative;
    z-index: var(--z-toast);
    margin: 0 auto var(--spacing-sm) auto;
    color: var(--text-color);
    align-self: center;
}

.nav-toggle span {
    width: 100%;
    height: 5px;
    background: var(--text-color);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal) ease;
    box-shadow: black 0.1em 0.1em 0.2em;
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
}

.nav-toggle.active {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
}

/* ===========================================================================
   NAVIGATION DROPDOWNS
   =========================================================================== */

.nav-dropdown {
    display: flex;
    width: 100%;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.nav-dropdown .nav-item a {
    color: var(--text-color);
}

/* Hide dropdowns when collapsed (mobile with JS) - only apply when JS has initialized */
.nav-item-with-dropdown.js-collapsed:not(.active) > .nav-dropdown {
    display: none;
}

.nav-item-with-dropdown.active .nav-column-header .toggle-indicator {
    transform: rotate(45deg);
}

.nav-dropdown .nav-item {
    box-shadow: none; /* No box-shadow by default, only on hover */
}

.nav-dropdown .nav-item:hover {
    background: var(--primary-gradient);
    color: var(--text-color);
    border: var(--border-std);
    border-color: var(--text-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.nav-dropdown .nav-item a:hover,
.nav-dropdown .nav-item a:focus-visible {
    text-decoration: underline;
}

/* Mobile: Column-specific default colors for nav items (no hover on mobile) */
/* Box-shadow removed - keeping colored borders to match column headers */
#pools-column .nav-dropdown .nav-item {
    box-shadow: none;
    border-color: var(--border-color-solid); /* Blue border to match POOLS header */
}

#spas-column .nav-dropdown .nav-item {
    box-shadow: none;
    border-color: var(--error-color); /* Red border to match SPAS header */
}

#extras-column .nav-dropdown .nav-item {
    box-shadow: none;
    border-color: var(--success-color-solid); /* Green border to match EXTRAS header */
}

/* ===========================================================================
   NAVIGATION COLUMNS (Mobile)
   =========================================================================== */

.nav-columns {
    display: flex; 
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
    margin: 0 auto;
    background: transparent;
}

.nav-columns.active {
    display: flex; /* Keep for consistency with toggle functionality */
    width: 100%;
}

/* ===========================================================================
   NAVIGATION COLUMN HEADERS
   =========================================================================== */

/* Nav: column-specific borders - box-shadow only on hover */
#pools-column .nav-column-header {
    /* blue border for POOLS */
    border-color: var(--border-color-solid);
    box-shadow: none;
}

#spas-column .nav-column-header {
    /* error border for SPAS */
    border-color: var(--error-color);
    box-shadow: none;
}

#extras-column .nav-column-header {
    /* green border for EXTRAS */
    border-color: var(--success-color-solid);
    box-shadow: none;
}

/* Desktop: Column-specific hover colors for nav items (overrides mobile defaults on hover) */
#pools-column .nav-dropdown .nav-item:hover {
    box-shadow: var(--glow-blue);
}

#spas-column .nav-dropdown .nav-item:hover {
    box-shadow: var(--glow-red);
}

#extras-column .nav-dropdown .nav-item:hover {
    box-shadow: var(--glow-green);
}

.nav-column-header {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: var(--nav-btn-height);
    padding: var(--nav-btn-padding);
    text-decoration: none;
    border: var(--border-std);
    border-color: var(--text-color);
    border-radius: var(--border-radius);
    box-shadow: none;
    transition: all var(--transition-normal) ease;
    text-transform: uppercase;
    cursor: pointer;
    position: relative;
    text-shadow: var(--text-shadow);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    letter-spacing: 0.03em;
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    backdrop-filter: blur(var(--backdrop-blur));
    background: var(--primary-gradient);
}

/* Toggle indicator for nav column headers - mobile only */
.nav-column-header .toggle-indicator {
    display: none; /* Hidden by default, shown with JS */
    width: 0.6em;
    height: 0.6em;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(-45deg);
    transition: transform var(--transition-fast) var(--transition-smooth);
    position: absolute;
    right: var(--spacing-unit);
    flex-shrink: 0;
}

/* Show toggle indicator when JS is available */
html.js-enabled .nav-column-header .toggle-indicator {
    display: inline-block;
}

.nav-column-header:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    background: var(--primary-blue);
    color: var(--text-color);
}

/* ===========================================================================
   DESKTOP MEDIA QUERY (min-width: 769px)
   =========================================================================== */

@media (min-width: 769px) {
    .header {
        overflow: visible; /* Allow overflow on desktop for dropdowns */
        min-height: 266px;
    }
    
    /* Desktop: Make header sticky */
    #header-container {
        position: sticky;
        top: 0;
        z-index: var(--z-header);
        background: var(--body-color);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
    
    /* Desktop: hero-nav-container stays as row */
    .hero-nav-container {
        flex-direction: row;
    }
    
    /* Index page: logo and hero-text side by side */
    .index-page .hero-nav-container {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        width: 88%;
        max-width: 100%;
        margin: 0 auto;
    }
   
    .index-page .hero-nav-container .logo {
        flex: 0 0 auto;
        align-self: center;
        margin: 0;
    }

    .index-page .hero-nav-container .hero-text {
        flex: 1;
        align-self: center;
        margin: 0;
        text-align: center;
    }
    
    .index-page .header-content-grid .main-nav {
        margin: 0 auto;
    }
    


    .emoji-desktop {
        display: inline-block;
        margin-right: 0.4ch;
        font-size: 1em;
        line-height: 1;
        vertical-align: text-bottom;
    }

    .nav-columns {
        display: flex;
        flex-direction: row;
        gap: var(--spacing-unit);
        width: 100%;
        margin-top: 0%;
    }

    .nav-column {
        flex: 1;
    }

    .nav-menu {
        position: relative;
        z-index: var(--z-nav);
        width: 100%;
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: var(--spacing-sm);
        list-style: none;
        margin: 0;
        overflow: visible;
        -ms-overflow-style: none;
        padding: var(--spacing-unit);
    }

    .nav-menu::-webkit-scrollbar {
        display: none;
    }
    
    .nav-toggle {
        display: none;
    }

    /* Desktop: nav dropdowns in row layout for all pages */
    .nav-dropdown {
        display: flex;
        width: 100%;
        flex-direction: row;
        gap: var(--spacing-xs);
    }
    
    .nav-column-header {
        margin: var(--spacing-xs) auto;
        font-weight: var(--font-weight-semibold);
    }

    .nav-column-header,
    .nav-dropdown .nav-item a {
        font-weight: var(--font-weight-semibold);
    }
    
    /* Desktop: Colored borders to match column headers, box-shadow only on hover */
    #pools-column .nav-dropdown .nav-item {
        box-shadow: none;
        border-color: var(--border-color-solid); /* Blue border to match POOLS header */
    }
    
    #spas-column .nav-dropdown .nav-item {
        box-shadow: none;
        border-color: var(--error-color); /* Red border to match SPAS header */
    }
    
    #extras-column .nav-dropdown .nav-item {
        box-shadow: none;
        border-color: var(--success-color-solid); /* Green border to match EXTRAS header */
    }
    
    /* Desktop: Column-specific hover colors for nav items and headers */
    #pools-column .nav-column-header:hover {
        box-shadow: 0 0 20px var(--primary-blue);
    }
    
    #pools-column .nav-dropdown .nav-item a:hover {
        box-shadow: var(--glow-blue);
    }
    
    #spas-column .nav-column-header:hover {
        box-shadow: 0 0 20px var(--error-color);
    }
    
    #spas-column .nav-dropdown .nav-item a:hover {
        box-shadow: var(--glow-red);
    }
    
    #extras-column .nav-column-header:hover {
        box-shadow: 0 0 20px var(--success-color-solid);
    }
    
    #extras-column .nav-dropdown .nav-item a:hover {
        box-shadow: var(--glow-green);
    }
    
    .nav-dropdown .nav-item:hover,
    .nav-item:hover,
    .btn-effect:hover {
        transform: var(--button-hover-transform);
    }
    
    .btn-effect:hover {
        box-shadow: var(--glow-blue);
    }

    .logo {
        width: clamp(96px, 180px, 220px);
        height: clamp(96px, 180px, 220px);
        max-width: clamp(96px, 180px, 220px);
        margin: 0;
    }

    .logo-link,
    .logo-link a {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .logo-image {
        width: 100%;
        height: 100%;
        object-fit: contain;
        object-position: center;
        border-radius: var(--border-radius-full);
        transition: transform var(--transition-normal) ease;
    }

    .hero-heading {
        font-weight: var(--font-weight-bold);
        text-align: center;
        padding: 0;
        margin: 0;
    }

    .main-nav {
        display: flex;
        flex-direction: row;
        padding: 0;
        margin-bottom: var(--spacing-sm);
        width: 100%;
    }

    .nav-columns.active {
        flex-direction: row;
    }
}