/* ==========================================================================
   CSS Variables: Emerald & Sage Glassmorphism Palette
   ========================================================================== */
:root {
    /* Основная зеленая палитра */
    --color-green-50: #f0fdf4;
    --color-green-100: #dcfce7;
    --color-green-200: #bbf7d0;
    --color-green-300: #86efac;
    --color-green-400: #4ade80;
    --color-green-500: #22c55e;
    --color-green-600: #16a34a;
    --color-green-700: #15803d;
    --color-green-800: #166534;
    --color-green-900: #14532d;
    --color-green-950: #052e16;

    /* Кастомные акценты */
    --color-emerald-deep: #064e3b;
    --color-mint-soft: #ecfdf5;
    --color-neon-accent: #059669;
    --color-sage-bg: #f4fcf7;
    
    /* Текстовые цвета */
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-light: #94a3b8;

    /* Градиенты */
    --gradient-primary: linear-gradient(135deg, var(--color-green-600) 0%, var(--color-green-800) 100%);
    --gradient-glow: linear-gradient(45deg, var(--color-green-300), var(--color-green-500), var(--color-green-200));
    --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.6) 100%);

    /* Тени */
    --shadow-sm: 0 2px 8px rgba(5, 46, 22, 0.04);
    --shadow-md: 0 8px 24px rgba(5, 46, 22, 0.08);
    --shadow-lg: 0 20px 40px -8px rgba(5, 46, 22, 0.12);
    --shadow-glow: 0 0 30px rgba(74, 222, 128, 0.2);
    --shadow-btn: 0 10px 20px -5px rgba(22, 163, 74, 0.4);

    /* Скругления */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    /* Тайминги */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

::selection {
    background-color: var(--color-green-200);
    color: var(--color-green-950);
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

@keyframes pulse-soft {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

@keyframes shine {
    0% { left: -100%; opacity: 0; }
    50% { opacity: 0.5; }
    100% { left: 200%; opacity: 0; }
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes blob-spin {
    from { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.2); }
    to { transform: rotate(360deg) scale(1); }
}

/* ==========================================================================
   Ambient Background (Декоративные формы)
   ========================================================================== */
.ambient-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    filter: blur(80px);
    opacity: 0.4;
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: var(--color-green-100);
    animation-delay: 0s;
}

.blob-2 {
    top: 40%;
    right: -20%;
    width: 60vw;
    height: 60vw;
    background: var(--color-green-50);
    animation-delay: -5s;
}

.blob-3 {
    bottom: -20%;
    left: 20%;
    width: 40vw;
    height: 40vw;
    background: var(--color-mint-soft);
    animation-delay: -10s;
}

/* ==========================================================================
   Header Styles
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(22, 163, 74, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
    padding: 1rem 0;
    transition: var(--transition-smooth);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-icon {
    width: 28px;
    height: 28px;
    color: var(--color-green-600);
}

.header-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-emerald-deep);
    letter-spacing: -0.02em;
}

.header-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-mint-soft);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-green-700);
    border: 1px solid var(--color-green-200);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-green-500);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    animation: pulse-soft 2s infinite;
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

/* ==========================================================================
   Hero / Product Card Styles
   ========================================================================== */
.product-section {
    position: relative;
    width: 100%;
    animation: fade-in-up 0.8s ease-out forwards;
}

.product-card {
    position: relative;
    background: var(--gradient-card);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    z-index: 10;
}

.card-glow {
    position: absolute;
    inset: -2px;
    background: var(--gradient-glow);
    border-radius: calc(var(--radius-xl) + 2px);
    z-index: -2;
    opacity: 0.3;
    filter: blur(15px);
}

.card-border-gradient {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 2px;
    background: linear-gradient(135deg, rgba(167, 243, 208, 0.8), rgba(255,255,255,0) 50%, rgba(134, 239, 172, 0.5));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: -1;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

/* ==========================================================================
   CSS-Only Gallery (Логика и Стили)
   ========================================================================== */
.gallery-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: sticky;
    top: 6rem;
}

.gallery-radio {
    display: none;
}

.main-image-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-green-50);
    overflow: hidden;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-frame {
    position: relative;
    width: 100%;
    height: 100%;
}

.main-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1;
}

/* Логика переключения главного фото */
#thumb-1:checked ~ .main-image-container .img-1,
#thumb-2:checked ~ .main-image-container .img-2,
#thumb-3:checked ~ .main-image-container .img-3,
#thumb-4:checked ~ .main-image-container .img-4 {
    opacity: 1;
    transform: scale(1);
    z-index: 2;
}

.image-badge {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    background: var(--color-green-100);
    color: var(--color-green-800);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 10;
    border: 1px solid var(--color-green-200);
    box-shadow: var(--shadow-sm);
}

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

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

.thumb-inner {
    background: #ffffff;
    border-radius: calc(var(--radius-md) - 4px);
    aspect-ratio: 1 / 1;
    padding: 0.75rem;
    border: 2px solid var(--color-green-50);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
    overflow: hidden;
}

.thumb-inner img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.thumb-label:hover .thumb-inner {
    border-color: var(--color-green-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Активное состояние миниатюр */
#thumb-1:checked ~ .thumbnails-container .t-1 .thumb-inner,
#thumb-2:checked ~ .thumbnails-container .t-2 .thumb-inner,
#thumb-3:checked ~ .thumbnails-container .t-3 .thumb-inner,
#thumb-4:checked ~ .thumbnails-container .t-4 .thumb-inner {
    border-color: var(--color-green-500);
    box-shadow: 0 0 0 4px var(--color-green-100);
}

/* ==========================================================================
   Product Info Styles
   ========================================================================== */
.product-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.info-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.product-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-emerald-deep);
    letter-spacing: -0.03em;
}

.title-underline {
    width: 80px;
    height: 6px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

.product-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    font-weight: 400;
    max-width: 90%;
}

.features-block {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--color-green-100);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: inset 0 2px 10px rgba(255,255,255,1);
}

.features-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-green-900);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: #ffffff;
    padding: 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-green-400);
    transition: var(--transition-fast);
}

.feature-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-green-600);
}

.feature-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-green-500);
    margin-top: 2px;
}

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

.feature-text strong {
    color: var(--text-main);
    display: block;
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

/* ==========================================================================
   CTA Section Styles
   ========================================================================== */
.cta-section {
    width: 100%;
    margin-top: 2rem;
}

.cta-container {
    position: relative;
    background: var(--color-emerald-deep);
    border-radius: var(--radius-xl);
    padding: 5rem 2rem;
    text-align: center;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* Декоративные элементы CTA */
.cta-decor {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    z-index: 1;
}

.cta-decor.circle-1 {
    width: 300px;
    height: 300px;
    background: var(--color-green-600);
    top: -100px;
    left: -100px;
    opacity: 0.6;
}

.cta-decor.circle-2 {
    width: 400px;
    height: 400px;
    background: var(--color-green-400);
    bottom: -150px;
    right: -100px;
    opacity: 0.4;
}

.cta-content {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.cta-heading {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.cta-subheading {
    font-size: 1.25rem;
    color: var(--color-green-100);
    max-width: 600px;
    margin: 0 auto 1.5rem auto;
}

.cta-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: var(--gradient-primary);
    color: #ffffff;
    font-size: 1.125rem;
    font-weight: 700;
    padding: 1.25rem 3rem;
    border-radius: 9999px;
    text-decoration: none;
    overflow: hidden;
    box-shadow: var(--shadow-btn);
    transition: var(--transition-bounce);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

/* Блик на кнопке */
.cta-button::after {
    content: '';
    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: shine 4s infinite;
}

.cta-button:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 30px -5px rgba(22, 163, 74, 0.6);
    background: linear-gradient(135deg, var(--color-green-500) 0%, var(--color-green-700) 100%);
}

.cta-button:active {
    transform: translateY(1px);
    box-shadow: 0 5px 10px rgba(22, 163, 74, 0.4);
}

.cta-button:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px var(--color-sage-bg), 0 0 0 8px var(--color-green-500);
}

.btn-icon {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-smooth);
}

.cta-button:hover .btn-icon {
    transform: translateX(4px);
}

/* ==========================================================================
   Reviews Section Styles (Beautiful Amazon-style)
   ========================================================================== */
.reviews-section {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 4rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-green-50);
}

.reviews-header {
    text-align: center;
    margin-bottom: 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.reviews-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-emerald-deep);
}

.reviews-underline {
    width: 60px;
    height: 4px;
    background: var(--color-green-400);
    border-radius: 2px;
}

.reviews-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.review-card {
    background: var(--color-sage-bg);
    border: 1px solid var(--color-green-100);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.review-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-green-300);
    transition: var(--transition-smooth);
    opacity: 0.5;
}

.review-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: #ffffff;
}

.review-card:hover::before {
    background: var(--color-green-500);
    opacity: 1;
}

.review-meta-top {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.reviewer-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.avatar-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--color-green-200);
    background: var(--color-green-50);
    padding: 2px;
}

.avatar-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.reviewer-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-main);
}

.review-rating-block {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.stars {
    color: #f59e0b; /* Сохраняем классический цвет звезд для конверсии, но можно и зеленый */
    font-size: 1.25rem;
    letter-spacing: 2px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.review-headline {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--color-green-950);
}

.review-context {
    margin-bottom: 0.75rem;
}

.review-date {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 500;
}

.review-specs {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    background: var(--color-green-50);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    border: 1px solid var(--color-green-100);
}

.spec-color {
    color: var(--text-muted);
    font-weight: 600;
}

.spec-divider {
    color: var(--color-green-200);
}

.spec-verified {
    color: var(--color-neon-accent);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.spec-verified::before {
    content: '✓';
    display: inline-block;
    background: var(--color-neon-accent);
    color: white;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    font-size: 10px;
    line-height: 14px;
    text-align: center;
}

.review-body {
    color: var(--text-main);
    font-size: 1rem;
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* ==========================================================================
   Footer Styles
   ========================================================================== */
.site-footer {
    position: relative;
    background: var(--color-green-950);
    padding: 4rem 2rem;
    margin-top: 4rem;
    border-top: 4px solid var(--color-green-700);
    overflow: hidden;
}

.footer-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 200px;
    background: var(--color-green-800);
    filter: blur(80px);
    opacity: 0.5;
    border-radius: 50%;
}

.footer-container {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
    text-align: center;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: #ffffff;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-desc {
    color: var(--color-green-300);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

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

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-green-400);
    transition: var(--transition-smooth);
}

.footer-link:hover {
    color: #ffffff;
}

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

/* ==========================================================================
   Media Queries (Mobile-First Adaptations)
   ========================================================================== */

/* Tablet & Mobile Adjustments */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .gallery-wrapper {
        position: relative;
        top: 0;
        max-width: 600px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 2rem 1rem;
        gap: 4rem;
    }

    .product-card {
        padding: 2rem 1.5rem;
        border-radius: var(--radius-lg);
    }

    .product-title {
        text-align: center;
    }
    
    .title-underline {
        margin: 0 auto;
    }

    .product-subtitle {
        text-align: center;
        max-width: 100%;
    }

    .features-block {
        padding: 1.5rem;
    }

    .cta-container {
        padding: 4rem 1.5rem;
        border-radius: var(--radius-lg);
    }

    .reviews-section {
        padding: 2.5rem 1.5rem;
    }

    .review-meta-top {
        align-items: flex-start;
    }
    
    .review-rating-block {
        gap: 0.5rem;
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-links {
        flex-direction: column;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .header-badge {
        display: none; /* Прячем бейдж на очень маленьких экранах для чистоты */
    }

    .header-title {
        font-size: 1.1rem;
    }

    .thumbnails-container {
        gap: 0.5rem;
    }

    .thumb-inner {
        padding: 0.25rem;
    }

    .feature-item {
        padding: 1rem;
        flex-direction: column;
        gap: 0.75rem;
    }

    .cta-heading {
        font-size: 1.75rem;
    }

    .cta-button {
        width: 100%;
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }

    .review-card {
        padding: 1.5rem;
    }

    .review-specs {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .spec-divider {
        display: none;
    }
}

/* Very small screens */
@media (max-width: 320px) {
    .product-card {
        padding: 1.5rem 1rem;
    }
    .reviews-section {
        padding: 2rem 1rem;
    }
}