/* ==========================================================================
   1. CSS VARIABLES (Strictly bounded to the Blue Palette requested)
   ========================================================================== */
:root {
    /* Primary Blue Palette */
    --c-blue-50: #f0f8ff;
    --c-blue-100: #e0f0fe;
    --c-blue-200: #b9e0fe;
    --c-blue-300: #7cc5fd;
    --c-blue-400: #36a6fa;
    --c-blue-500: #0b8bf0;
    --c-blue-600: #006cce;
    --c-blue-700: #0056a8;
    --c-blue-800: #02498b;
    --c-blue-900: #083d73;
    --c-blue-950: #05264b;

    /* Neutrals & Text */
    --c-white: #ffffff;
    --c-gray-50: #f8fafc;
    --c-gray-100: #f1f5f9;
    --c-gray-200: #e2e8f0;
    --c-gray-300: #cbd5e1;
    --c-gray-400: #94a3b8;
    --c-gray-500: #64748b;
    --c-gray-600: #475569;
    --c-gray-700: #334155;
    --c-gray-800: #1e293b;
    --c-gray-900: #0f172a;

    /* Amazon Specific Accents (Used only where strictly needed for reviews) */
    --c-amazon-orange: #ffa41c;
    --c-amazon-orange-dark: #cc8012;

    /* Semantic Colors based on Blue Palette */
    --bg-main: var(--c-gray-50);
    --bg-card: var(--c-white);
    --text-main: var(--c-gray-700);
    --text-heading: var(--c-blue-950);
    --text-muted: var(--c-gray-500);

    /* Gradients */
    --grad-primary: linear-gradient(135deg, var(--c-blue-600) 0%, var(--c-blue-800) 100%);
    --grad-light: linear-gradient(135deg, var(--c-white) 0%, var(--c-blue-50) 100%);
    --grad-cta: linear-gradient(to right, var(--c-blue-500), var(--c-blue-700));
    --grad-glass: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);

    /* Shadows (Multi-layered for depth) */
    --shadow-sm: 0 1px 2px 0 rgba(8, 61, 115, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(8, 61, 115, 0.1), 0 2px 4px -1px rgba(8, 61, 115, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(8, 61, 115, 0.1), 0 4px 6px -2px rgba(8, 61, 115, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(8, 61, 115, 0.15), 0 10px 10px -5px rgba(8, 61, 115, 0.04);
    --shadow-card: 0 24px 50px -12px rgba(8, 61, 115, 0.25);
    --shadow-glow: 0 0 20px rgba(11, 139, 240, 0.3);
    --shadow-glow-strong: 0 0 30px rgba(11, 139, 240, 0.5);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    /* Radii */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;

    /* Transitions */
    --trans-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --trans-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --trans-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --trans-bounce: 400ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ==========================================================================
   2. GLOBAL RESETS & BASE
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--c-blue-200);
    color: var(--c-blue-900);
}

.custom-scrollbar::-webkit-scrollbar {
    width: 10px;
}
.custom-scrollbar::-webkit-scrollbar-track {
    background: var(--c-gray-100);
}
.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--c-blue-300);
    border-radius: var(--radius-full);
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--c-blue-500);
}

/* Ambient Background Elements */
.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.4;
    pointer-events: none;
    animation: pulseGlow 10s infinite alternate ease-in-out;
}
.glow-1 {
    top: -10%; left: -10%; width: 50vw; height: 50vw;
    background: radial-gradient(circle, var(--c-blue-200) 0%, transparent 70%);
}
.glow-2 {
    bottom: -20%; right: -10%; width: 60vw; height: 60vw;
    background: radial-gradient(circle, var(--c-blue-100) 0%, transparent 70%);
    animation-delay: -5s;
}
.glow-3 {
    top: 40%; left: 30%; width: 40vw; height: 40vw;
    background: radial-gradient(circle, var(--c-blue-50) 0%, transparent 70%);
    opacity: 0.2;
}

/* ==========================================================================
   3. HEADER STYLES
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    transition: background var(--trans-normal);
}

.header-container {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-logo-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.header-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--c-blue-900);
    letter-spacing: -0.025em;
    text-transform: uppercase;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.header-decoration {
    width: 30px;
    height: 2px;
    background: var(--c-blue-200);
    border-radius: 2px;
    position: relative;
}
.header-decoration::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-blue-500);
    top: -2px;
}
.header-decoration.left::after { right: -3px; }
.header-decoration.right::after { left: -3px; }

.header-border-gradient {
    height: 3px;
    width: 100%;
    background: linear-gradient(90deg, transparent 0%, var(--c-blue-400) 50%, transparent 100%);
    opacity: 0.5;
}

/* ==========================================================================
   4. HERO / PRODUCT SECTION
   ========================================================================== */
.hero-section {
    padding: 4rem 0;
    position: relative;
}

.product-card {
    background: var(--grad-glass);
    border-radius: var(--radius-3xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.card-glow-inner {
    position: absolute;
    top: 0; left: 0; right: 0; height: 300px;
    background: linear-gradient(180deg, var(--c-blue-50) 0%, transparent 100%);
    z-index: 0;
    pointer-events: none;
}

.card-pattern-overlay {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(var(--c-blue-200) 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.15;
    z-index: 0;
    pointer-events: none;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

@media (min-width: 1024px) {
    .product-grid {
        grid-template-columns: 1fr 1.2fr;
        gap: 4rem;
        align-items: start;
    }
}

/* ==========================================================================
   5. CSS-ONLY GALLERY
   ========================================================================== */
.gallery-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
}

.gallery-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
}

/* Hide Radios */
.gallery-radio {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* Main Display Area */
.gallery-main-display {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: var(--c-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md), var(--shadow-inner);
    border: 1px solid var(--c-blue-100);
    overflow: hidden;
}

.gallery-main-item {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--trans-slow), transform var(--trans-slow);
    transform: scale(0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.img-zoom-wrapper {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--trans-slow);
}

.img-zoom-wrapper:hover {
    transform: scale(1.05);
}

.main-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 10px 15px rgba(0,0,0,0.1));
}

/* Thumbnails */
.gallery-thumbnails {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.thumb-label {
    cursor: pointer;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 1 / 1;
    transition: all var(--trans-normal);
}

.thumb-inner {
    width: 100%;
    height: 100%;
    background: var(--c-white);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--trans-normal);
    position: relative;
}

.thumb-inner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--c-blue-900);
    opacity: 0.05;
    transition: opacity var(--trans-normal);
}

.thumb-label:hover .thumb-inner {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.thumb-label:hover .thumb-inner::after {
    opacity: 0;
}

.thumb-inner img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* CSS Logic for Gallery */
#img1:checked ~ .gallery-main-display .item-1,
#img2:checked ~ .gallery-main-display .item-2,
#img3:checked ~ .gallery-main-display .item-3,
#img4:checked ~ .gallery-main-display .item-4 {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

#img1:checked ~ .gallery-thumbnails .thumb-1 .thumb-inner,
#img2:checked ~ .gallery-thumbnails .thumb-2 .thumb-inner,
#img3:checked ~ .gallery-thumbnails .thumb-3 .thumb-inner,
#img4:checked ~ .gallery-thumbnails .thumb-4 .thumb-inner {
    border-color: var(--c-blue-500);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}
#img1:checked ~ .gallery-thumbnails .thumb-1 .thumb-inner::after,
#img2:checked ~ .gallery-thumbnails .thumb-2 .thumb-inner::after,
#img3:checked ~ .gallery-thumbnails .thumb-3 .thumb-inner::after,
#img4:checked ~ .gallery-thumbnails .thumb-4 .thumb-inner::after {
    opacity: 0;
}

.gallery-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-blue-500);
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

@media (min-width: 1024px) {
    .gallery-hint {
        display: none;
    }
}

/* ==========================================================================
   6. PRODUCT DETAILS
   ========================================================================== */
.details-column {
    display: flex;
    flex-direction: column;
}

.details-header {
    margin-bottom: 2rem;
    position: relative;
}

.badge-wrapper {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.product-badge {
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-sm);
}

.product-badge.premium {
    background: var(--c-blue-900);
    color: var(--c-white);
}

.product-badge.natural {
    background: var(--c-blue-100);
    color: var(--c-blue-800);
    border: 1px solid var(--c-blue-200);
}

.product-main-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--c-blue-950);
    line-height: 1.1;
    margin-bottom: 1rem;
}

.title-highlight {
    position: relative;
    display: inline-block;
}

.title-underline {
    width: 60px;
    height: 4px;
    background: var(--c-blue-500);
    border-radius: 2px;
    margin-top: 1rem;
    position: relative;
}
.title-underline::after {
    content: '';
    position: absolute;
    left: 70px;
    top: 0;
    width: 10px;
    height: 4px;
    background: var(--c-blue-300);
    border-radius: 2px;
}

.benefits-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: var(--c-white);
    padding: 1.25rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--c-blue-50);
    box-shadow: var(--shadow-sm);
    transition: transform var(--trans-normal), box-shadow var(--trans-normal), border-color var(--trans-normal);
}

.benefit-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--c-blue-200);
}

.benefit-icon-wrapper {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.25rem;
}

.benefit-icon {
    width: 100%;
    height: 100%;
}

.benefit-text {
    font-size: 0.95rem;
    color: var(--c-gray-700);
    line-height: 1.6;
}

.benefit-text strong {
    color: var(--c-blue-900);
    display: block;
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.health-notice {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    background: linear-gradient(to right, var(--c-blue-50), var(--c-white));
    border-left: 4px solid var(--c-blue-400);
    padding: 1.25rem;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    align-items: center;
}

.health-icon {
    flex-shrink: 0;
    color: var(--c-blue-500);
    width: 24px;
    height: 24px;
}

.health-notice p {
    font-size: 0.9rem;
    color: var(--c-gray-600);
    font-style: italic;
    margin: 0;
}

@media (max-width: 768px) {
    .product-main-title { font-size: 2rem; }
    .product-card { padding: 1.5rem; }
}

/* ==========================================================================
   7. CTA SECTION
   ========================================================================== */
.cta-section {
    padding: 6rem 0;
    background: var(--c-blue-950);
    color: var(--c-white);
    margin: 2rem 0;
}

.cta-bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    opacity: 0.5;
}

.cta-bg-shape.shape-1 {
    width: 300px; height: 300px;
    background: var(--c-blue-500);
    top: -100px; left: -100px;
}
.cta-bg-shape.shape-2 {
    width: 400px; height: 400px;
    background: var(--c-blue-800);
    bottom: -150px; right: -150px;
}

.cta-content-wrapper {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cta-heading {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta-subheading {
    font-size: 1.125rem;
    color: var(--c-blue-200);
    margin-bottom: 3rem;
}

.cta-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 3rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--c-white);
    background: var(--grad-cta);
    border-radius: var(--radius-full);
    text-decoration: none;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(11, 139, 240, 0.4), inset 0 -3px 0 rgba(0,0,0,0.1);
    transition: transform var(--trans-bounce), box-shadow var(--trans-normal);
    z-index: 1;
}

.cta-button:hover, .cta-button:focus {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 30px rgba(11, 139, 240, 0.6), inset 0 -3px 0 rgba(0,0,0,0.1);
    outline: none;
}

.cta-button:active {
    transform: translateY(2px) scale(0.98);
    box-shadow: 0 5px 10px rgba(11, 139, 240, 0.4), inset 0 -1px 0 rgba(0,0,0,0.1);
}

.cta-button-text {
    position: relative;
    z-index: 2;
}

.cta-button-icon {
    width: 24px;
    height: 24px;
    position: relative;
    z-index: 2;
    transition: transform var(--trans-normal);
}

.cta-button:hover .cta-button-icon {
    transform: translateX(5px);
}

.cta-button-shine {
    position: absolute;
    top: 0; left: -100%;
    width: 50%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.3), transparent);
    transform: skewX(-25deg);
    animation: shineEffect 4s infinite;
    z-index: 1;
}

@media (max-width: 480px) {
    .cta-button {
        width: 100%;
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
    }
    .cta-heading { font-size: 1.75rem; }
}

/* ==========================================================================
   8. REVIEWS SECTION
   ========================================================================== */
.reviews-section {
    padding: 4rem 0 6rem;
    position: relative;
}

.reviews-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.reviews-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--c-blue-950);
    margin-bottom: 0.5rem;
}

.reviews-subtitle {
    font-size: 1.125rem;
    color: var(--c-blue-600);
    position: relative;
    display: inline-block;
}
.reviews-subtitle::after {
    content: '';
    display: block;
    width: 50%;
    height: 3px;
    background: var(--c-blue-400);
    margin: 0.5rem auto 0;
    border-radius: 2px;
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.review-card {
    background: var(--c-white);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-blue-50);
    transition: all var(--trans-normal);
    position: relative;
    overflow: hidden;
}

.review-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--c-blue-300);
    opacity: 0;
    transition: opacity var(--trans-normal);
}

.review-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.review-card:hover::before {
    opacity: 1;
}

.review-card-inner {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.review-user {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

.review-avatar-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--c-blue-100);
    box-shadow: var(--shadow-sm);
}

.review-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.review-author {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--c-gray-900);
}

.review-rating-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.review-stars {
    display: flex;
    gap: 2px;
}

.star {
    color: var(--c-gray-300);
    font-size: 1.25rem;
    line-height: 1;
}
.star.filled {
    color: var(--c-amazon-orange);
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.review-title {
    font-weight: 700;
    color: var(--c-gray-900);
    font-size: 1.05rem;
}

.review-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.review-attributes {
    font-size: 0.8rem;
    color: var(--c-gray-400);
    margin-top: -0.25rem;
}

.review-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--c-amazon-orange-dark);
    margin-top: 0.25rem;
}
.review-badge svg {
    width: 14px; height: 14px;
}

.review-content {
    margin-top: 0.5rem;
    color: var(--c-gray-800);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Attached Photos */
.review-photos {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.photo-thumbnail {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    border: 1px solid var(--c-gray-200);
    box-shadow: var(--shadow-sm);
}

.photo-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--trans-normal);
}

.photo-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.1);
    opacity: 0;
    transition: opacity var(--trans-normal);
}

.photo-thumbnail:hover img {
    transform: scale(1.1);
}
.photo-thumbnail:hover .photo-overlay {
    opacity: 1;
}

@media (max-width: 640px) {
    .review-card { padding: 1.5rem; }
    .review-rating-row { flex-direction: column; align-items: flex-start; gap: 0.25rem; }
}

/* ==========================================================================
   9. FOOTER
   ========================================================================== */
.site-footer {
    background: var(--c-blue-950);
    color: var(--c-blue-100);
    position: relative;
}

.footer-gradient-top {
    height: 4px;
    width: 100%;
    background: linear-gradient(90deg, var(--c-blue-400), var(--c-blue-600), var(--c-blue-400));
}

.footer-content {
    padding: 4rem 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--c-white);
    margin-bottom: 2rem;
    letter-spacing: 1px;
}

.footer-nav {
    margin-bottom: 2.5rem;
    width: 100%;
}

.footer-links {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--c-blue-200);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--trans-fast);
    position: relative;
    padding: 0.25rem 0;
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; width: 100%; height: 1px;
    background: var(--c-white);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--trans-normal);
}

.footer-link:hover, .footer-link:focus {
    color: var(--c-white);
    outline: none;
}

.footer-link:hover::after, .footer-link:focus::after {
    transform: scaleX(1);
    transform-origin: left;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--c-blue-400);
    border-top: 1px solid rgba(255,255,255,0.1);
    width: 100%;
    padding-top: 1.5rem;
}

@media (max-width: 640px) {
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

/* ==========================================================================
   10. ANIMATIONS & KEYFRAMES
   ========================================================================== */
@keyframes pulseGlow {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.1); opacity: 0.5; }
}

@keyframes shineEffect {
    0% { left: -100%; }
    20% { left: 200%; }
    100% { left: 200%; }
}

/* Focus visibility for accessibility */
*:focus-visible {
    outline: 2px solid var(--c-blue-400);
    outline-offset: 2px;
}