/* ==========================================================================
   CSS VARIABLES - PALET BIRU PREMIUM & SISTEM DESAIN
   ========================================================================== */
:root {
    /* Palet Biru Utama (Tingkat Kedalaman) */
    --clr-blue-000: #ffffff;
    --clr-blue-050: #f0f7ff;
    --clr-blue-100: #e0f2fe;
    --clr-blue-200: #bae6fd;
    --clr-blue-300: #7dd3fc;
    --clr-blue-400: #38bdf8;
    --clr-blue-500: #0ea5e9;
    --clr-blue-600: #0284c7;
    --clr-blue-700: #0369a1;
    --clr-blue-800: #075985;
    --clr-blue-900: #0c4a6e;
    --clr-blue-950: #082f49;
    --clr-blue-glow: rgba(14, 165, 233, 0.4);
    
    /* Aksen netral dan hangat di dalam struktur */
    --clr-text-main: #1e293b;
    --clr-text-muted: #64748b;
    --clr-text-light: #f8fafc;
    --clr-star-gold: #f59e0b;
    --clr-verify-amber: #d97706;

    /* Bayangan kompleks (Layered Shadows) */
    --shadow-soft: 0 4px 20px rgba(12, 74, 110, 0.05);
    --shadow-medium: 0 10px 30px rgba(12, 74, 110, 0.08), 0 4px 10px rgba(12, 74, 110, 0.04);
    --shadow-heavy: 0 20px 40px rgba(12, 74, 110, 0.12), 0 8px 16px rgba(12, 74, 110, 0.06);
    --shadow-glow: 0 0 30px var(--clr-blue-glow);
    --shadow-btn: 0 10px 25px rgba(2, 132, 199, 0.4), inset 0 2px 0 rgba(255, 255, 255, 0.2);
    --shadow-btn-hover: 0 15px 35px rgba(2, 132, 199, 0.5), inset 0 2px 0 rgba(255, 255, 255, 0.3);

    /* Border Radius & Spacing */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-pill: 9999px;

    /* Animasi & Transisi */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.2s var(--ease-out-expo);
    --transition-base: 0.4s var(--ease-out-expo);
    --transition-slow: 0.8s var(--ease-out-expo);
}

/* ==========================================================================
   RESET & DASAR
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.site-body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--clr-blue-050);
    color: var(--clr-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

::selection {
    background-color: var(--clr-blue-500);
    color: var(--clr-blue-000);
}

/* ==========================================================================
   ANIMASI KEYFRAMES
   ========================================================================== */
@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.02); }
}

@keyframes floatReverse {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(20px) scale(0.98); }
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

@keyframes buttonShine {
    0% { left: -100%; opacity: 0; }
    20% { opacity: 0.5; }
    100% { left: 200%; opacity: 0; }
}

@keyframes imageReveal {
    0% { opacity: 0; transform: scale(0.96) translateY(10px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

/* ==========================================================================
   LATAR BELAKANG DEKORATIF
   ========================================================================== */
.bg-decorative-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
    background: linear-gradient(135deg, var(--clr-blue-050) 0%, var(--clr-blue-100) 100%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
}

.orb-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: var(--clr-blue-200);
    animation: float 15s ease-in-out infinite;
}

.orb-2 {
    top: 40%;
    right: -15%;
    width: 40vw;
    height: 40vw;
    background: var(--clr-blue-300);
    animation: floatReverse 18s ease-in-out infinite;
    opacity: 0.4;
}

.orb-3 {
    bottom: -20%;
    left: 20%;
    width: 60vw;
    height: 60vw;
    background: var(--clr-blue-100);
    animation: float 20s ease-in-out infinite reverse;
}

.bg-grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(2, 132, 199, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(2, 132, 199, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 1;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(14, 165, 233, 0.15);
    box-shadow: 0 4px 20px rgba(12, 74, 110, 0.03);
    transition: var(--transition-base);
}

.header-container {
    max-w-7xl mx-auto;
    position: relative;
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.25rem 1.5rem;
}

.header-logo-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--clr-blue-050), var(--clr-blue-100));
    border: 1px solid var(--clr-blue-200);
    border-radius: var(--radius-pill);
    box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.8), 0 2px 8px rgba(2, 132, 199, 0.05);
}

.badge-icon {
    color: var(--clr-blue-600);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.badge-icon svg {
    width: 100%;
    height: 100%;
}

.header-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--clr-blue-900);
    letter-spacing: -0.01em;
}

.header-progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 100%;
    background: linear-gradient(90deg, var(--clr-blue-300), var(--clr-blue-600), var(--clr-blue-300));
    background-size: 200% 100%;
    animation: gradientFlow 3s linear infinite;
    opacity: 0.8;
}

@keyframes gradientFlow {
    0% { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

/* ==========================================================================
   HERO / PRODUCT CARD SECTION
   ========================================================================== */
.site-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
    position: relative;
    z-index: 10;
}

.product-hero-section {
    margin-bottom: 5rem;
}

.product-card-premium {
    background: var(--clr-blue-000);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-heavy);
    position: relative;
    padding: 0.5rem;
    overflow: hidden;
}

.product-card-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-xl);
    padding: 2px;
    background: linear-gradient(135deg, var(--clr-blue-200), transparent 50%, var(--clr-blue-400));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.product-card-inner {
    background: linear-gradient(to bottom right, #ffffff, var(--clr-blue-050));
    border-radius: calc(var(--radius-xl) - 4px);
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    overflow: hidden;
}

/* ==========================================================================
   CSS-ONLY GALLERY LOGIC
   ========================================================================== */
.product-gallery-wrapper {
    padding: 2.5rem;
    background: radial-gradient(circle at center, var(--clr-blue-000) 0%, var(--clr-blue-050) 100%);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
}

.product-gallery-wrapper::after {
    content: '';
    position: absolute;
    right: 0;
    top: 10%;
    bottom: 10%;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--clr-blue-200), transparent);
    display: none;
}

.gallery-radio {
    display: none;
}

/* Main Image Viewer */
.main-image-viewer {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-lg);
    background: var(--clr-blue-000);
    box-shadow: var(--shadow-medium);
    z-index: 1;
}

.main-image-frame {
    position: absolute;
    inset: 1rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #fdfdfd;
}

.image-layer {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: opacity 0.5s var(--ease-out-expo), transform 0.6s var(--ease-out-expo), visibility 0s 0.6s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-layer img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    mix-blend-mode: multiply;
}

.image-overlay-shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 20%, rgba(255,255,255,0.4) 50%, transparent 80%);
    transform: translateX(-100%);
    pointer-events: none;
}

/* Gallery Logic Connections */
#thumb-1:checked ~ .main-image-viewer .layer-1,
#thumb-2:checked ~ .main-image-viewer .layer-2,
#thumb-3:checked ~ .main-image-viewer .layer-3,
#thumb-4:checked ~ .main-image-viewer .layer-4 {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    transition: opacity 0.5s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
    z-index: 10;
}

#thumb-1:checked ~ .main-image-viewer .layer-1 .image-overlay-shine,
#thumb-2:checked ~ .main-image-viewer .layer-2 .image-overlay-shine,
#thumb-3:checked ~ .main-image-viewer .layer-3 .image-overlay-shine,
#thumb-4:checked ~ .main-image-viewer .layer-4 .image-overlay-shine {
    animation: shineSweep 1.5s var(--ease-out-expo) forwards;
}

@keyframes shineSweep {
    100% { transform: translateX(100%); }
}

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

.thumb-item {
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: 4px;
    background: transparent;
    transition: var(--transition-fast);
    position: relative;
}

.thumb-inner {
    aspect-ratio: 1 / 1;
    border-radius: calc(var(--radius-sm) - 2px);
    overflow: hidden;
    position: relative;
    background: var(--clr-blue-000);
    box-shadow: 0 2px 8px rgba(12, 74, 110, 0.05);
}

.thumb-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.thumb-active-ring {
    position: absolute;
    inset: 0;
    border: 2px solid var(--clr-blue-500);
    border-radius: calc(var(--radius-sm) - 2px);
    opacity: 0;
    transform: scale(0.9);
    transition: var(--transition-fast);
}

.thumb-item:hover .thumb-inner img {
    transform: scale(1.1);
}

/* Thumbnail Active States via Radio Logic */
#thumb-1:checked ~ .thumbnail-navigation .item-1,
#thumb-2:checked ~ .thumbnail-navigation .item-2,
#thumb-3:checked ~ .thumbnail-navigation .item-3,
#thumb-4:checked ~ .thumbnail-navigation .item-4 {
    background: var(--clr-blue-100);
    transform: translateY(-2px);
}

#thumb-1:checked ~ .thumbnail-navigation .item-1 .thumb-active-ring,
#thumb-2:checked ~ .thumbnail-navigation .item-2 .thumb-active-ring,
#thumb-3:checked ~ .thumbnail-navigation .item-3 .thumb-active-ring,
#thumb-4:checked ~ .thumbnail-navigation .item-4 .thumb-active-ring {
    opacity: 1;
    transform: scale(1);
}

/* ==========================================================================
   PRODUCT INFO SECTION
   ========================================================================== */
.product-info-wrapper {
    padding: 3rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.info-header {
    margin-bottom: 2.5rem;
    position: relative;
}

.badge-premium {
    display: inline-block;
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clr-blue-700);
    background: var(--clr-blue-100);
    border-radius: var(--radius-pill);
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(14, 165, 233, 0.15);
}

.product-h1-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--clr-blue-950);
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.title-underline-decorative {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--clr-blue-400), var(--clr-blue-600));
    border-radius: 2px;
}

.product-description-blocks {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.desc-feature-block {
    display: flex;
    gap: 1.25rem;
    padding: 1.25rem;
    background: var(--clr-blue-000);
    border-radius: var(--radius-md);
    border: 1px solid var(--clr-blue-050);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.desc-feature-block:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    border-color: var(--clr-blue-100);
}

.desc-feature-block::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(to bottom, var(--clr-blue-300), var(--clr-blue-500));
    opacity: 0;
    transition: var(--transition-fast);
}

.desc-feature-block:hover::before {
    opacity: 1;
}

.feature-icon-wrapper {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--clr-blue-050);
    color: var(--clr-blue-600);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 0 1px var(--clr-blue-100);
}

.feature-icon-wrapper svg {
    width: 20px;
    height: 20px;
}

.feature-text-content {
    flex-grow: 1;
}

.feature-heading {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--clr-blue-900);
    margin-bottom: 0.4rem;
}

.feature-paragraph {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
    line-height: 1.6;
}

.feature-paragraph strong {
    color: var(--clr-blue-700);
}

/* ==========================================================================
   MASSIVE CTA SECTION
   ========================================================================== */
.cta-massive-section {
    position: relative;
    margin: 4rem 0;
    padding: 5rem 2rem;
    background: linear-gradient(135deg, var(--clr-blue-900), var(--clr-blue-700));
    border-radius: var(--radius-xl);
    text-align: center;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
}

.cta-background-animations {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.cta-background-animations .wave {
    position: absolute;
    bottom: -50%;
    left: 50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 40%;
    transform-origin: 50% 50%;
}

.wave-1 {
    animation: rotateWave 15s infinite linear;
}

.wave-2 {
    background: rgba(14, 165, 233, 0.1);
    animation: rotateWave 20s infinite linear reverse;
}

@keyframes rotateWave {
    from { transform: translate(-50%, 0) rotate(0deg); }
    to { transform: translate(-50%, 0) rotate(360deg); }
}

.cta-content-core {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
}

.cta-headline {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--clr-blue-000);
    margin-bottom: 2.5rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.btn-amazon-massive {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem 3.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-blue-000);
    background: linear-gradient(180deg, var(--clr-blue-400), var(--clr-blue-600));
    border-radius: var(--radius-pill);
    text-decoration: none;
    box-shadow: var(--shadow-btn);
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
}

.btn-amazon-massive::before {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.4);
    pointer-events: none;
}

.btn-shine-effect {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transform: skewX(-20deg);
    animation: buttonShine 4s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-amazon-massive:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-btn-hover);
    background: linear-gradient(180deg, var(--clr-blue-300), var(--clr-blue-500));
}

.btn-amazon-massive:active {
    transform: translateY(2px);
    box-shadow: 0 5px 15px rgba(2, 132, 199, 0.3), inset 0 4px 10px rgba(0,0,0,0.1);
}

/* ==========================================================================
   AMAZON-STYLE REVIEWS (PREMIUM)
   ========================================================================== */
.reviews-premium-section {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 0;
}

.reviews-section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.reviews-h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--clr-blue-950);
    display: inline-block;
    position: relative;
}

.reviews-header-line {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--clr-blue-500), transparent);
    margin: 1rem auto 0;
    border-radius: 2px;
}

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

.review-card-modern {
    display: flex;
    gap: 1.5rem;
    background: var(--clr-blue-000);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-base);
    border: 1px solid var(--clr-blue-050);
}

.review-card-modern:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
    border-color: var(--clr-blue-100);
}

.review-avatar-col {
    flex-shrink: 0;
}

.avatar-ring {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    padding: 3px;
    background: linear-gradient(135deg, var(--clr-blue-200), var(--clr-blue-500));
    box-shadow: 0 4px 10px rgba(14, 165, 233, 0.2);
}

.avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--clr-blue-000);
}

.review-content-col {
    flex-grow: 1;
}

.reviewer-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--clr-blue-950);
    display: block;
    margin-bottom: 0.25rem;
}

.review-rating-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

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

.star-icon {
    width: 18px;
    height: 18px;
    color: var(--clr-star-gold);
}

.review-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--clr-text-main);
}

.review-date-location {
    font-size: 0.85rem;
    color: var(--clr-text-muted);
    margin-bottom: 0.25rem;
}

.review-specs-line {
    font-size: 0.85rem;
    color: var(--clr-blue-700);
    margin-bottom: 0.5rem;
}

.review-badges {
    margin-bottom: 1rem;
}

.badge-verified {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--clr-verify-amber);
    background: rgba(217, 119, 6, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
}

.verify-icon {
    width: 14px;
    height: 14px;
}

.review-body-text {
    font-size: 0.95rem;
    color: var(--clr-text-main);
    line-height: 1.7;
}

.review-attached-media {
    margin-top: 1.5rem;
}

.attached-img-frame {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    border: 2px solid var(--clr-blue-100);
    cursor: pointer;
}

.attached-img-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.attached-img-frame:hover img {
    transform: scale(1.1);
}

.img-hover-zoom {
    position: absolute;
    inset: 0;
    background: rgba(12, 74, 110, 0.2);
    opacity: 0;
    transition: var(--transition-fast);
}

.attached-img-frame:hover .img-hover-zoom {
    opacity: 1;
}

.review-separator {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--clr-blue-100), transparent);
    margin: 0 2rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    background: var(--clr-blue-950);
    position: relative;
    padding: 4rem 0 2rem;
    margin-top: 6rem;
}

.footer-gradient-border {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--clr-blue-400), var(--clr-blue-600), var(--clr-blue-400));
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--clr-blue-000);
    letter-spacing: 1px;
}

.footer-nav {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-link {
    color: var(--clr-blue-200);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--clr-blue-000);
}

.link-underline {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--clr-blue-400);
    transition: width var(--transition-base);
}

.footer-link:hover .link-underline {
    width: 100%;
}

.footer-copyright {
    color: var(--clr-blue-400);
    font-size: 0.8rem;
    margin-top: 2rem;
    opacity: 0.6;
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVE ADAPTATION)
   ========================================================================== */
@media screen and (min-width: 1024px) {
    .product-card-inner {
        grid-template-columns: 1fr 1fr;
    }
    
    .product-gallery-wrapper::after {
        display: block;
    }

    .product-info-wrapper {
        padding: 4rem 3rem;
    }

    .product-h1-title {
        font-size: 2.5rem;
    }
}

@media screen and (max-width: 1023px) {
    .product-gallery-wrapper {
        padding: 2rem 1.5rem;
    }

    .main-image-viewer {
        max-width: 500px;
        margin: 0 auto;
    }

    .thumbnail-navigation {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media screen and (max-width: 768px) {
    .site-main {
        padding: 1.5rem 1rem;
    }

    .product-h1-title {
        font-size: 1.75rem;
    }

    .desc-feature-block {
        flex-direction: column;
        gap: 0.75rem;
    }

    .cta-massive-section {
        padding: 3rem 1.5rem;
        margin: 2rem 0;
    }

    .cta-headline {
        font-size: 1.6rem;
    }

    .btn-amazon-massive {
        width: 100%;
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }

    .review-card-modern {
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
    }

    .avatar-ring {
        width: 50px;
        height: 50px;
    }

    .footer-nav {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
}

@media screen and (max-width: 375px) {
    .product-gallery-wrapper {
        padding: 1rem;
    }
    
    .product-info-wrapper {
        padding: 1.5rem 1rem;
    }

    .feature-icon-wrapper {
        width: 32px;
        height: 32px;
    }

    .cta-headline {
        font-size: 1.4rem;
    }
}