/**
 * Kit Section Styles - Refactored from kit_section.css
 * Compact & efficient design with modern kit showcase
 * 
 * @author: Senior Software Engineer
 * @version: 2.0.0
 * @description: Comprehensive kit section with items grid, features, and collection info
 */

/* ============================================
   CSS VARIABLES & BASE
   ============================================ */
:root {
    --kit-primary: #0a2540;
    --kit-secondary: #007bff;
    --kit-accent: #ffc107;
    --kit-accent-secondary: #17a2b8;
    --kit-success: #28a745;
    --kit-danger: #dc3545;
    --kit-info: #17a2b8;
    --kit-dark: #212529;
    --kit-light: #f8f9fa;
    --kit-white: #ffffff;
    --kit-gray-50: #f8f9fa;
    --kit-gray-100: #e9ecef;
    --kit-gray-200: #dee2e6;
    --kit-gray-300: #ced4da;
    --kit-gray-400: #adb5bd;
    --kit-gray-500: #6c757d;
    --kit-gray-600: #495057;
    --kit-gray-700: #343a40;

    /* Beautiful Gradient System */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-secondary: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warning: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-danger: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-info: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --gradient-ocean: linear-gradient(135deg, #2196F3 0%, #21CBF3 100%);
    --gradient-sunset: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    --gradient-forest: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%);
    --gradient-royal: linear-gradient(135deg, #141e30 0%, #243b55 100%);
    --gradient-fire: linear-gradient(135deg, #f12711 0%, #f5af19 100%);
    --gradient-ice: linear-gradient(135deg, #a8e6cf 0%, #dcedc1 100%);

    /* Kit shadows */
    --kit-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.1);
    --kit-shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
    --kit-shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Kit radius */
    --kit-radius: 0.75rem;
    --kit-radius-lg: 1rem;
    --kit-radius-xl: 1.5rem;
    --kit-radius-2xl: 2rem;
}

/* ============================================
   KIT SECTION BASE - ULTRA COMPACT
   ============================================ */
#kit {
    background: linear-gradient(135deg, #f8fafc 0%, #e3f2fd 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

#kit::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cpattern id='hexagons' width='30' height='30' patternUnits='userSpaceOnUse'%3E%3Cpolygon points='15,5 25,12 25,23 15,30 5,23 5,12' fill='none' stroke='%23ffffff' stroke-width='1' opacity='0.1'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100' height='100' fill='url(%23hexagons)'/%3E%3C/svg%3E") repeat;
    pointer-events: none;
    z-index: 1;
}

#kit .container {
    position: relative;
    z-index: 2;
}

/* ============================================
   SECTION HEADER - COMPACT
   ============================================ */
.section-header {
    margin-bottom: 60px;
    text-align: center;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 20px;
    color: var(--kit-gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ============================================
   KIT CONTENT LAYOUT
   ============================================ */
.kit-content {
    max-width: 1200px;
    margin: 0 auto;
}

/* ============================================
   MAIN KIT IMAGE
   ============================================ */
.kit-hero {
    margin-bottom: 60px;
}

/* ============================================
   KIT SHOWCASE - COMPACT
   ============================================ */
.kit-showcase {
    margin-bottom: 1.5rem; /* Reduced from 2rem */
}

/* Kit Image Container - Smaller */
.kit-image-container {
    position: relative;
    border-radius: var(--kit-radius-2xl);
    overflow: hidden;
    box-shadow: var(--kit-shadow-xl);
    transition: all 0.3s ease;
}

.kit-image-container:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.2);
}

.kit-main-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.kit-image-container:hover .kit-main-image {
    transform: scale(1.05);
}

.kit-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.1) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 2rem;
}

.kit-value-badge {
    background: var(--gradient-primary);
    color: white;
    padding: 20px 30px;
    border-radius: var(--kit-radius-xl);
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.kit-value-amount {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.kit-value-label {
    font-size: 0.9rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================
   KIT ITEMS SECTION
   ============================================ */
.kit-items-container {
    margin-bottom: 60px;
}

.kit-items-header {
    margin-bottom: 40px;
    text-align: center;
}

.kit-items-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--kit-dark);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.kit-items-title i {
    color: var(--kit-primary);
}

.kit-items-subtitle {
    font-size: 1.1rem;
    color: var(--kit-gray-600);
    margin: 0;
    max-width: 500px;
    margin: 0 auto;
}

/* ============================================
   KIT TOGGLE BAR
   ============================================ */
.kit-toggle-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--kit-white);
    border: 1.5px solid var(--kit-gray-200);
    border-radius: var(--kit-radius);
    padding: 10px 16px;
    cursor: pointer;
    user-select: none;
    transition: box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    margin-bottom: 10px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.kit-toggle-bar:hover {
    border-color: #93c5fd;
    background: #f0f7ff;
    box-shadow: 0 2px 10px rgba(37,99,235,0.08);
}

.kit-toggle-bar--open {
    border-color: #93c5fd;
    background: #eff6ff;
    box-shadow: 0 2px 10px rgba(37,99,235,0.10);
    justify-content: center;
}

.kit-toggle-bar--open .kit-toggle-right {
    margin-left: 0;
}

.kit-toggle-bar:focus-visible {
    outline: 2px solid var(--kit-secondary);
    outline-offset: 2px;
}

.kit-toggle-icons {
    display: flex;
    gap: 5px;
    flex-wrap: nowrap;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    opacity: 1;
    max-width: 100%;
    transition: opacity 0.22s ease, max-width 0.32s ease, margin 0.28s ease, gap 0.28s ease;
}

/* Expanded kit: hide preview chips — full list shows icons in the grid */
.kit-toggle-bar--open .kit-toggle-icons {
    flex: 0 1 0;
    max-width: 0;
    opacity: 0;
    gap: 0;
    margin: 0;
    pointer-events: none;
}

.kit-chip {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--kit-white);
    flex-shrink: 0;
}

.kit-chip-1  { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.kit-chip-2  { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.kit-chip-3  { background: linear-gradient(135deg, #fa709a, #fee140); }
.kit-chip-4  { background: linear-gradient(135deg, #a8edea, #fed6e3); color: #475569; }
.kit-chip-5  { background: linear-gradient(135deg, #ff9a9e, #fecfef); color: #475569; }
.kit-chip-6  { background: linear-gradient(135deg, #56ab2f, #a8e063); }
.kit-chip-7  { background: linear-gradient(135deg, #667eea, #764ba2); }
.kit-chip-8  { background: linear-gradient(135deg, #f093fb, #f5576c); }
.kit-chip-9  { background: linear-gradient(135deg, #ffd89b, #19547b); color: #fff; }
.kit-chip-10 { background: linear-gradient(135deg, #89f7fe, #66a6ff); }

/**
 * Ordinal tones: same palette as toggle chips, applied to each .kit-item-card via kit-tone-*.
 * Keeps row icons and preview chips visually aligned.
 */
.kit-tone-1  { --kit-tone-bg: linear-gradient(135deg, #4facfe, #00f2fe); --kit-tone-solid: #38bdf8; --kit-tone-fg: #fff; }
.kit-tone-2  { --kit-tone-bg: linear-gradient(135deg, #43e97b, #38f9d7); --kit-tone-solid: #34d399; --kit-tone-fg: #fff; }
.kit-tone-3  { --kit-tone-bg: linear-gradient(135deg, #fa709a, #fee140); --kit-tone-solid: #f472b6; --kit-tone-fg: #fff; }
.kit-tone-4  { --kit-tone-bg: linear-gradient(135deg, #a8edea, #fed6e3); --kit-tone-solid: #5eead4; --kit-tone-fg: #475569; }
.kit-tone-5  { --kit-tone-bg: linear-gradient(135deg, #ff9a9e, #fecfef); --kit-tone-solid: #fb7185; --kit-tone-fg: #475569; }
.kit-tone-6  { --kit-tone-bg: linear-gradient(135deg, #56ab2f, #a8e063); --kit-tone-solid: #65a30d; --kit-tone-fg: #fff; }
.kit-tone-7  { --kit-tone-bg: linear-gradient(135deg, #667eea, #764ba2); --kit-tone-solid: #6366f1; --kit-tone-fg: #fff; }
.kit-tone-8  { --kit-tone-bg: linear-gradient(135deg, #f093fb, #f5576c); --kit-tone-solid: #e879f9; --kit-tone-fg: #fff; }
.kit-tone-9  { --kit-tone-bg: linear-gradient(135deg, #ffd89b, #19547b); --kit-tone-solid: #0e7490; --kit-tone-fg: #fff; }
.kit-tone-10 { --kit-tone-bg: linear-gradient(135deg, #89f7fe, #66a6ff); --kit-tone-solid: #38bdf8; --kit-tone-fg: #fff; }

.kit-chip-img {
    width: 26px;
    height: 26px;
    object-fit: cover;
    border-radius: 5px;
}

.kit-toggle-right {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
    margin-left: auto;
}

.kit-toggle-label {
    font-size: 0.78rem;
    font-weight: 500;
    color: #64748b;
    white-space: nowrap;
}

.kit-toggle-chevron {
    font-size: 0.8rem;
    color: #94a3b8;
    transition: transform 0.2s ease;
}

.kit-toggle-bar--open .kit-toggle-chevron {
    transform: rotate(-180deg);
}

/* Kit Items Grid */
.kit-items-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 40px;
    overflow: hidden;
    max-height: 4000px;
    opacity: 1;
    visibility: visible;
    transition:
        max-height 0.4s cubic-bezier(0.33, 1, 0.68, 1),
        opacity 0.28s ease,
        margin-bottom 0.28s ease,
        visibility 0s linear 0s;
}

.kit-items-grid.kit-grid--collapsed {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    margin-bottom: 0;
    pointer-events: none;
    visibility: hidden;
    transition:
        max-height 0.36s cubic-bezier(0.33, 1, 0.68, 1),
        opacity 0.22s ease,
        margin-bottom 0.26s ease,
        visibility 0s linear 0.32s;
}

.kit-item-card {
    background: var(--kit-white);
    border-radius: var(--kit-radius);
    padding: 14px 16px;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    text-align: left;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
    border: 1px solid var(--kit-gray-200);
    position: relative;
    overflow: hidden;
}

.kit-item-card:hover {
    box-shadow: var(--kit-shadow);
    border-color: var(--kit-secondary);
}

.kit-item-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: var(--kit-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--kit-tone-fg, var(--kit-white));
    transition: transform 0.2s ease;
    background: var(--kit-tone-bg, linear-gradient(135deg, #667eea, #764ba2));
}

.kit-item-card .kit-item-icon i {
    color: var(--kit-tone-fg, var(--kit-white));
}

/* Gallery rows: no small icon — show the same ordinal accent on the media strip */
.kit-item-card[data-item-id] .kit-item-media {
    box-shadow: inset 0 3px 0 0 var(--kit-tone-solid, #94a3b8);
}

.kit-item-card:hover .kit-item-icon {
    transform: scale(1.08);
}

.kit-item-image {
    width: 44px;
    height: 44px;
    object-fit: cover;
    border-radius: var(--kit-radius);
    flex-shrink: 0;
}

.kit-item-content {
    flex: 1;
    min-width: 0;
}

.kit-item-content h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--kit-dark);
    margin: 0 0 3px;
    line-height: 1.3;
}

.kit-item-content p,
.kit-item-content .item-description {
    color: var(--kit-gray-500);
    font-size: 0.82rem;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   KIT FEATURES
   ============================================ */
.kit-features {
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--kit-white);
    border-radius: var(--kit-radius-xl);
    padding: 30px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    transition: all 0.3s ease;
    border: 1px solid var(--kit-gray-200);
    box-shadow: var(--kit-shadow);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--kit-shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--kit-white);
    flex-shrink: 0;
}

.feature-card:nth-child(1) .feature-icon {
    background: var(--gradient-success);
}

.feature-card:nth-child(2) .feature-icon {
    background: var(--gradient-warning);
}

.feature-card:nth-child(3) .feature-icon {
    background: var(--gradient-danger);
}

.feature-content h5 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--kit-dark);
    margin-bottom: 10px;
}

.feature-content p {
    color: var(--kit-gray-600);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   KIT COLLECTION INFO
   ============================================ */
.kit-collection-info {
    margin-top: 30px;
}

.collection-card {
    background: var(--kit-white);
    border-radius: var(--kit-radius-lg);
    padding: 24px;
    box-shadow: var(--kit-shadow);
    position: relative;
    overflow: hidden;
}

.collection-card::before { display: none; }

.collection-header {
    margin-bottom: 18px;
    text-align: center;
}

.collection-header h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--kit-dark);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.collection-header i {
    font-size: 1.3rem;
    color: var(--kit-primary);
    opacity: 0.8;
}

.collection-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.collection-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--kit-light);
    border-radius: var(--kit-radius);
    transition: all 0.3s ease;
}

.collection-item:hover {
    background: var(--kit-white);
    transform: translateY(-3px);
    box-shadow: var(--kit-shadow);
}

.collection-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--kit-white);
    flex-shrink: 0;
}

.collection-item:nth-child(1) .collection-icon {
    background: var(--gradient-success);
}

.collection-item:nth-child(2) .collection-icon {
    background: var(--gradient-warning);
}

.collection-item:nth-child(3) .collection-icon {
    background: var(--gradient-info);
}

.collection-text {
    flex: 1;
}

.collection-text strong {
    display: block;
    font-weight: 600;
    color: var(--kit-dark);
    margin-bottom: 5px;
}

.collection-note {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border: 1px solid #f59e0b;
    border-radius: var(--kit-radius);
    padding: 12px 16px;
    margin-top: 16px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.collection-note i {
    font-size: 1.1rem;
    color: #d97706;
    margin-top: 2px;
    flex-shrink: 0;
}

.collection-note p {
    color: #92400e;
    font-weight: 500;
    margin: 0;
    line-height: 1.5;
}

/* ============================================
   KIT PLACEHOLDER (when no kit image available)
   ============================================ */
.kit-placeholder {
    text-align: center;
    padding: 60px 30px;
    background: var(--kit-light);
    border-radius: var(--kit-radius-2xl);
    border: 2px dashed var(--kit-gray-300);
}

.placeholder-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
    background: var(--kit-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--kit-gray-400);
    box-shadow: var(--kit-shadow);
}

.kit-placeholder h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--kit-gray-600);
    margin-bottom: 15px;
}

.kit-placeholder p {
    color: var(--kit-gray-500);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.placeholder-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.placeholder-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--kit-gray-600);
    font-weight: 500;
}

.placeholder-feature i {
    color: var(--kit-primary);
    font-size: 1.2rem;
}

.placeholder-feature span {
    font-size: 0.95rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    #kit {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 18px;
    }

    .kit-toggle-bar {
        min-height: 44px;
        padding: 8px 14px;
    }

    .kit-toggle-label {
        font-size: 0.85rem;
    }

    /* Hide extra chips beyond 5 on mobile so they don't overflow */
    .kit-chip:nth-child(n+6) {
        display: none;
    }

    .kit-items-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .kit-item-card {
        padding: 12px 14px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 25px;
    }
    
    .collection-card {
        padding: 30px;
    }
    
    .collection-details {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .collection-item {
        padding: 15px;
    }
    
    .kit-main-image {
        height: 300px;
    }
    
    .kit-image-overlay {
        padding: 1.5rem;
    }
    
    .kit-value-badge {
        padding: 15px 20px;
    }
    
    .kit-value-amount {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .kit-items-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .kit-item-card {
        padding: 12px 14px;
    }

    .kit-item-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .collection-details {
        gap: 10px;
    }
    
    .placeholder-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .placeholder-features {
        gap: 15px;
    }
}

/* ============================================
   ACCESSIBILITY & MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .kit-item-card,
    .feature-card,
    .collection-item,
    .kit-image-container,
    .kit-items-grid,
    .kit-toggle-icons {
        transition: none !important;
    }
    
    .kit-item-card::before {
        display: none;
    }
}

@media (prefers-contrast: high) {
    .kit-item-card,
    .feature-card,
    .collection-card {
        border: 2px solid var(--kit-dark);
    }
    
    .kit-placeholder {
        border: 2px solid var(--kit-dark);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .kit-image-overlay {
        display: none;
    }
    
    .kit-item-card,
    .feature-card,
    .collection-card {
        box-shadow: none;
        border: 1px solid var(--kit-gray-300);
        break-inside: avoid;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.kit-text-sm { font-size: 0.8rem; }
.kit-text-xs { font-size: 0.7rem; }
.kit-mb-sm { margin-bottom: 0.5rem; }
.kit-mb-md { margin-bottom: 1rem; }
.kit-p-sm { padding: 0.5rem; }
.kit-p-md { padding: 1rem; }