/**
 * @file
 * Section Navigator Component
 * 
 * Scroll-triggered reveal + sticky section navigation
 * Uses the EXACT same styling system as Basic Tabs
 * 
 * USAGE:
 * ------
 * <section class="section-navigator">
 *   <div class="section-navigator-header">
 *     <h2 class="section-navigator-title">Title</h2>
 *     <p class="section-navigator-description">Description...</p>
 *   </div>
 *   <div class="section-navigator-body">
 *     <nav class="section-navigator-nav gradient-smaragd-aquamarin basic-tabs-overlay-white">
 *       <a href="#section1" class="section-nav-item active" data-section="section1">Item 1</a>
 *       ...
 *     </nav>
 *     <div class="section-navigator-content">
 *       <div id="section1" class="section-navigator-section active">Content...</div>
 *       ...
 *     </div>
 *   </div>
 * </section>
 * 
 * MODES:
 * ------
 * Default (scroll-all): User scrolls through all sections
 * Tabs mode: Add class "section-navigator-tabs" - only shows active section
 * 
 * GRADIENT BACKGROUNDS (add to .section-navigator-nav):
 * ------------------------------------------------------
 * All gradients from gradients.css work automatically.
 * 
 * OVERLAY OPTIONS (same as Basic Tabs, add to .section-navigator-nav with gradient):
 * -----------------------------------------------------------------------------------
 *   - basic-tabs-overlay-white        → uniform white overlay (40%)
 *   - basic-tabs-overlay-white-center → white center vignette
 *   - basic-tabs-overlay-black        → uniform black overlay (40%)
 *   - basic-tabs-overlay-center       → dark center vignette
 * 
 * CUSTOM BACKGROUNDS (add inline style to .section-navigator):
 * ------------------------------------------------------------
 *   style="--section-navigator-bg: rgba(255,255,255,0.9);"        → Content area background
 *   style="--section-navigator-header-bg: rgba(100,200,180,0.2);" → Header area background
 * 
 * Example with custom backgrounds:
 *   <section class="section-navigator" style="--section-navigator-bg: #fff; --section-navigator-header-bg: transparent;">
 */

/* ==========================================================================
   CSS VARIABLES
   ========================================================================== */

.section-navigator {
    --section-navigator-bg: transparent; /* Default: transparent - override with inline style or preset class */
    --section-navigator-header-bg: transparent; /* Default: transparent */
    --section-navigator-accent: #0d9488;
    --section-navigator-accent-hover: #14b8a6;
    --section-navigator-accent-active: #2dd4bf;
}

/* ==========================================================================
   SECTION NAVIGATOR - Container
   ========================================================================== */

.section-navigator {
    position: relative;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
    animation: sectionNavAppear 0.5s ease-out forwards;
}

@keyframes sectionNavAppear {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   SECTION NAVIGATOR - Header
   ========================================================================== */

.section-navigator-header {
    text-align: center;
    margin-bottom: 2rem; /* Same gap as between menu and content */
    padding: 2rem;
    background: var(--section-navigator-header-bg);
    border-radius: 12px;
    /* Full width - no max-width constraint */
}

/* Title inherits page styles - only set margin */
.section-navigator-title {
    margin: 0 0 1rem 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Description inherits page styles - only set margin and color */
.section-navigator-description {
    color: #6B7280;
    margin: 0;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.6s ease-out 0.15s, transform 0.6s ease-out 0.15s;
}

.section-navigator.is-revealed .section-navigator-title,
.section-navigator.is-revealed .section-navigator-description {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   SECTION NAVIGATOR - Body Layout (Desktop: Sidebar + Content)
   ========================================================================== */

.section-navigator-body {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    align-items: start;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out 0.3s, transform 0.6s ease-out 0.3s;
}

.section-navigator.is-revealed .section-navigator-body {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   DESKTOP: Navigation (Vertical Sidebar with Green Line Indicator)
   ========================================================================== */

.section-navigator-nav {
    position: sticky;
    top: 120px;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0;
    background: transparent;
    border-radius: 0;
    border: none;
    z-index: 10;
    /* Animation */
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.5s ease-out 0.4s, transform 0.5s ease-out 0.4s;
}

.section-navigator.is-revealed .section-navigator-nav {
    opacity: 1;
    transform: translateX(0);
}

/* ==========================================================================
   DESKTOP: Nav Items (Vertical List with Left Green Line)
   ========================================================================== */

.section-nav-item {
    display: block;
    position: relative;
    padding: 0.75rem 1rem 0.75rem 1.25rem;
    font-family: Figtree, sans-serif;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.4;
    color: #6B7280;
    text-decoration: none;
    background: transparent;
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-align: left;
    z-index: 2;
}

/* Green line indicator on the left */
.section-nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #e5e7eb;
    border-radius: 3px;
    transition: background-color 0.25s ease, width 0.25s ease;
}

.section-nav-item:hover {
    color: #14b8a6;
}

.section-nav-item:hover::before {
    background: #14b8a6;
}

/* Active state - Desktop */
.section-nav-item.active {
    color: #0d9488;
    font-weight: 600;
}

.section-nav-item.active::before {
    background: #0d9488;
    width: 4px;
}

/* ==========================================================================
   DESKTOP: Gradient Nav Background (Refined Vertical Pills)
   When gradient class is applied, switch to pill style
   ========================================================================== */

.section-navigator-nav[class*="gradient-"] {
    padding: 8px !important;
    border-radius: 12px;
    gap: 0;
    position: sticky;
    top: 120px;
    display: flex;
    flex-direction: column;
}

/* Reset paragraph inside nav (Drupal WYSIWYG adds <p> tags) */
.section-navigator-nav p {
    margin: 0 !important;
    padding: 0 !important;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Reset the green line for gradient mode */
.section-navigator-nav[class*="gradient-"] .section-nav-item::before {
    display: none;
}

/* Inactive items on gradient: transparent with white border */
.section-navigator-nav[class*="gradient-"] .section-nav-item {
    padding: 1rem 1.25rem;
    background: transparent;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    border-radius: 10px;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
    text-align: left;
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    margin: 0 0 8px 0 !important;
    box-sizing: border-box;
    display: block; /* Ensure block display for vertical stacking */
}

/* Remove margin from last item */
.section-navigator-nav[class*="gradient-"] .section-nav-item:last-child {
    margin-bottom: 0 !important;
}

/* Hover: semi-transparent white fill */
.section-navigator-nav[class*="gradient-"] .section-nav-item:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.7);
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
    transform: translateX(2px);
}

/* Active: solid white with dark text */
.section-navigator-nav[class*="gradient-"] .section-nav-item.active {
    background: #ffffff;
    border: 1.5px solid #ffffff;
    color: #1F2937;
    text-shadow: none;
    font-weight: 600;
    box-shadow: none; /* Remove shadow that may add visual space */
}

.section-navigator-nav[class*="gradient-"] .section-nav-item.active:hover {
    background: #ffffff;
    transform: translateX(2px);
}

/* Dark text variant for light gradients */
.section-navigator-nav[class*="gradient-"].section-nav-text-dark .section-nav-item {
    color: #1F2937;
    text-shadow: none;
    border-color: rgba(31, 41, 55, 0.3);
}

.section-navigator-nav[class*="gradient-"].section-nav-text-dark .section-nav-item:hover {
    color: #1F2937;
    border-color: rgba(31, 41, 55, 0.6);
    background: rgba(255, 255, 255, 0.5);
}

.section-navigator-nav[class*="gradient-"].section-nav-text-dark .section-nav-item.active {
    color: #1F2937;
    border-color: #1F2937;
}

/* ==========================================================================
   NAV OVERLAY OPTIONS (REUSE Basic Tabs overlay classes)
   ========================================================================== */

/* White transparent overlay */
.section-navigator-nav.basic-tabs-overlay-white::before {
    content: '';
    position: absolute;
    inset: 0;
    background-color: rgba(255, 255, 255, 0.4);
    border-radius: inherit;
    pointer-events: none;
    z-index: 1;
}

/* White center vignette */
.section-navigator-nav.basic-tabs-overlay-white-center::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 70% 60% at center,
        rgba(255, 255, 255, 0.5) 0%,
        rgba(255, 255, 255, 0.4) 30%,
        rgba(255, 255, 255, 0.2) 60%,
        rgba(255, 255, 255, 0) 100%
    );
    border-radius: inherit;
    pointer-events: none;
    z-index: 1;
}

/* Black transparent overlay */
.section-navigator-nav.basic-tabs-overlay-black::before {
    content: '';
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    border-radius: inherit;
    pointer-events: none;
    z-index: 1;
}

/* Dark center vignette */
.section-navigator-nav.basic-tabs-overlay-center::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 70% 60% at center,
        rgba(0, 0, 0, 0.5) 0%,
        rgba(0, 0, 0, 0.4) 30%,
        rgba(0, 0, 0, 0.2) 60%,
        rgba(0, 0, 0, 0) 100%
    );
    border-radius: inherit;
    pointer-events: none;
    z-index: 1;
}

/* ==========================================================================
   SECTION NAVIGATOR - Content Area
   ========================================================================== */

.section-navigator-content {
    background: var(--section-navigator-bg);
    padding: 2rem;
    min-height: 400px;
    border-radius: 12px;
}

/* Individual sections */
.section-navigator-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.section-navigator.is-revealed .section-navigator-section {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation */
.section-navigator.is-revealed .section-navigator-section:nth-child(1) { transition-delay: 0.5s; }
.section-navigator.is-revealed .section-navigator-section:nth-child(2) { transition-delay: 0.6s; }
.section-navigator.is-revealed .section-navigator-section:nth-child(3) { transition-delay: 0.7s; }
.section-navigator.is-revealed .section-navigator-section:nth-child(4) { transition-delay: 0.8s; }
.section-navigator.is-revealed .section-navigator-section:nth-child(5) { transition-delay: 0.9s; }

/* Section spacing */
.section-navigator-section + .section-navigator-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

/* Section title - inherit page styles, only set margin */
.section-navigator-section-title {
    margin: 0 0 1rem 0;
}

/* Section content - inherit page styles */
.section-navigator-section-content p {
    margin: 0 0 1rem 0;
}

.section-navigator-section-content p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   TABS MODE - Only show active section
   ========================================================================== */

.section-navigator.section-navigator-tabs .section-navigator-section {
    display: none;
    opacity: 0;
    transform: translateY(0);
}

.section-navigator.section-navigator-tabs .section-navigator-section.active {
    display: block;
    opacity: 1;
    animation: sectionFadeIn 0.4s ease-out forwards;
}

@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-navigator.section-navigator-tabs .section-navigator-section + .section-navigator-section {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

/* ==========================================================================
   BACKGROUND COLOR OPTIONS
   ========================================================================== */

.section-navigator.section-navigator-bg-white {
    --section-navigator-bg: #ffffff;
}

.section-navigator.section-navigator-bg-gray {
    --section-navigator-bg: #f3f4f6;
}

.section-navigator.section-navigator-bg-transparent {
    --section-navigator-bg: transparent;
}

.section-navigator.section-navigator-bg-beige {
    --section-navigator-bg: rgba(245, 241, 235, 0.8);
}

/* Content with shadow (like cards) - shadow on ALL sides */
.section-navigator.section-navigator-content-shadow .section-navigator-content {
    background: #ffffff;
    box-shadow: 
        0 0 10px rgba(0, 0, 0, 0.08),
        0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
}

/* Stronger shadow option - shadow on ALL sides */
.section-navigator.section-navigator-content-shadow-lg .section-navigator-content {
    background: #ffffff;
    box-shadow: 
        0 0 15px rgba(0, 0, 0, 0.1),
        0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
}

/* Header background presets */
.section-navigator.section-navigator-header-teal {
    --section-navigator-header-bg: rgba(77, 182, 172, 0.15);
}

.section-navigator.section-navigator-header-white {
    --section-navigator-header-bg: rgba(255, 255, 255, 0.6);
}

.section-navigator.section-navigator-header-beige {
    --section-navigator-header-bg: rgba(245, 241, 235, 0.8);
}

/* ==========================================================================
   RESPONSIVE - Tablet
   ========================================================================== */

@media (max-width: 1024px) {
    .section-navigator {
        padding: 3rem 1.5rem;
    }
    
    .section-navigator-body {
        grid-template-columns: 200px 1fr;
        gap: 1.5rem;
    }
    
    .section-navigator-title {
        font-size: 2rem;
    }
    
    .section-nav-item {
        padding: 0.625rem 0.875rem 0.625rem 1rem;
        font-size: 0.875rem;
    }
    
    .section-navigator-nav[class*="gradient-"] {
        padding: 8px !important;
    }
    
    .section-navigator-nav[class*="gradient-"] .section-nav-item {
        padding: 0.875rem 1rem;
        font-size: 0.875rem;
        margin: 0 0 8px 0 !important;
    }
    
    .section-navigator-nav[class*="gradient-"] .section-nav-item:last-child {
        margin-bottom: 0 !important;
    }
    
    .section-navigator-content {
        padding: 1.5rem;
    }
}

/* ==========================================================================
   RESPONSIVE - Mobile (Horizontal Nav - EXACTLY like Basic Tabs)
   ========================================================================== */

@media (max-width: 768px) {
    .section-navigator {
        padding: 2rem 1rem;
    }
    
    .section-navigator-header {
        margin-bottom: 8px; /* Same gap as between menu and content */
    }
    
    .section-navigator-title {
        font-size: 1.75rem;
    }
    
    .section-navigator-description {
        font-size: 1rem;
    }
    
    .section-navigator-body {
        display: flex !important;
        flex-direction: column !important;
        gap: 8px;
    }
    
    /* =====================================================
       Mobile Nav - BASE STYLES (no gradient - gray bg)
       ===================================================== */
    .section-navigator-nav {
        order: 1 !important;
        position: relative !important;
        top: auto !important;
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
        padding: 8px;
        border-radius: 8px;
        margin-bottom: 0;
        opacity: 1;
        transform: none;
        width: 100%;
    }
    
    /* Content comes after nav */
    .section-navigator-content {
        order: 2 !important;
    }
    
    /* Reset paragraph inside nav for mobile - HORIZONTAL layout */
    .section-navigator-nav p {
        margin: 0 !important;
        padding: 0 !important;
        display: flex;
        flex-direction: row !important;
        flex-wrap: nowrap;
        gap: 8px;
        width: 100%;
        justify-content: stretch;
    }
    
    /* Only set gray background when NO gradient class is present */
    .section-navigator-nav:not([class*="gradient-"]) {
        background: #e5e7eb;
    }
    
    .section-navigator.is-revealed .section-navigator-nav {
        opacity: 1;
        transform: none;
    }
    
    /* Hide the green line on mobile - use pill style instead */
    .section-nav-item::before {
        display: none;
    }
    
    /* Mobile nav items - FLEXIBLE SIZE for equal gaps */
    .section-nav-item {
        flex: 1 1 0;
        min-width: 0;
        padding: 0.625rem 0.5rem;
        font-size: 0.875rem;
        font-weight: 500;
        border-radius: 6px;
        text-align: center;
        margin: 0 !important;
        display: block;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    /* Non-gradient nav item styling */
    .section-navigator-nav:not([class*="gradient-"]) .section-nav-item {
        color: #1F2937;
        background: #e5e7eb;
        border: 1px solid #e5e7eb;
    }
    
    .section-navigator-nav:not([class*="gradient-"]) .section-nav-item:hover {
        color: #ffffff;
        background: #14b8a6;
        border-color: #14b8a6;
    }
    
    /* Active state - Mobile (same as Basic Tabs) - non-gradient */
    .section-navigator-nav:not([class*="gradient-"]) .section-nav-item.active {
        color: #ffffff;
        background: #2dd4bf;
        border-color: #2dd4bf;
        font-weight: 500;
        box-shadow: 
            0 0 0 2px #5eead4,
            0 4px 12px rgba(45, 212, 191, 0.3);
    }
    
    .section-navigator-nav:not([class*="gradient-"]) .section-nav-item.active:hover {
        background: #14b8a6;
        border-color: #14b8a6;
    }
    
    /* =====================================================
       Mobile Nav - WITH GRADIENT (pill style like Basic Tabs)
       Higher specificity to override base mobile styles
       ===================================================== */
    .section-navigator-nav[class*="gradient-"] {
        /* Don't set background here - let gradient class apply */
        position: relative;
        padding: 8px;
        gap: 8px;
    }
    
    .section-navigator-nav[class*="gradient-"] p {
        gap: 8px;
    }
    
    .section-navigator-nav[class*="gradient-"] .section-nav-item {
        flex: 1 1 0;
        min-width: 0;
        padding: 0.625rem 0.5rem;
        font-size: 0.875rem;
        background: transparent;
        border: 2px solid rgba(255, 255, 255, 0.6);
        border-radius: 8px;
        color: #ffffff;
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        text-align: center;
        margin: 0 !important;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .section-navigator-nav[class*="gradient-"] .section-nav-item:hover {
        background: rgba(255, 255, 255, 0.3);
        border-color: rgba(255, 255, 255, 0.9);
        color: #1F2937;
        text-shadow: none;
    }
    
    .section-navigator-nav[class*="gradient-"] .section-nav-item.active {
        background: #ffffff;
        border: 2px solid #ffffff;
        color: #1F2937;
        text-shadow: none;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    }
    
    .section-navigator-nav[class*="gradient-"] .section-nav-item.active:hover {
        background: #ffffff;
    }
    
    /* =====================================================
       Mobile Content Area
       ===================================================== */
    .section-navigator-content {
        border-radius: 8px;
        padding: 1.5rem 1rem;
        margin-top: 0; /* Gap handled by parent flex gap */
        width: 100%;
    }
    
    .section-navigator-section-title {
        font-size: 1.25rem;
    }
    
    .section-navigator-section + .section-navigator-section {
        margin-top: 1.5rem;
        padding-top: 1.5rem;
    }
    
    /* Mobile overlay adjustments */
    .section-navigator-nav.basic-tabs-overlay-white-center::before {
        background: radial-gradient(
            ellipse 90% 70% at center,
            rgba(255, 255, 255, 0.5) 0%,
            rgba(255, 255, 255, 0.4) 35%,
            rgba(255, 255, 255, 0.2) 65%,
            rgba(255, 255, 255, 0) 100%
        );
    }
    
    .section-navigator-nav.basic-tabs-overlay-center::before {
        background: radial-gradient(
            ellipse 90% 70% at center,
            rgba(0, 0, 0, 0.5) 0%,
            rgba(0, 0, 0, 0.4) 35%,
            rgba(0, 0, 0, 0.2) 65%,
            rgba(0, 0, 0, 0) 100%
        );
    }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .section-navigator,
    .section-navigator-title,
    .section-navigator-description,
    .section-navigator-body,
    .section-navigator-nav,
    .section-navigator-section {
        opacity: 1;
        transform: none;
        transition: none;
        animation: none;
    }
}