/* ==========================================================================
   DESIGN SYSTEM & CSS VARIABLES (COPPER / BRONZE THEME)
   ========================================================================== */
:root {
    --bg-primary: #08080a;
    --bg-secondary: #0f1013;
    --bg-surface: rgba(20, 22, 28, 0.7);
    --bg-surface-hover: rgba(28, 31, 39, 0.9);
    
    --text-primary: #f8fafc;
    --text-secondary: #a0aec0;
    --text-muted: #64748b;
    
    /* Медный / Бронзовый акцент из логотипа Shaiva Records */
    --accent-copper: #c87a30;
    --accent-copper-light: #e5984c;
    --accent-copper-dark: #8c4f1a;
    --accent-glow: rgba(200, 122, 48, 0.15);
    
    --gradient-primary: linear-gradient(135deg, var(--accent-copper-light) 0%, var(--accent-copper-dark) 100%);
    --gradient-glow: linear-gradient(135deg, rgba(229, 152, 76, 0.3) 0%, rgba(140, 79, 26, 0.3) 100%);
    
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(200, 122, 48, 0.4);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* ==========================================================================
   BASE STYLES & RESET
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

html, body {
    width: 100%;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    position: relative;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Фоновое медное свечение */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.25;
}

.glow-1 {
    top: -100px;
    left: -100px;
    background: radial-gradient(circle, var(--accent-copper) 0%, transparent 70%);
}

.glow-2 {
    top: 800px;
    right: -150px;
    background: radial-gradient(circle, var(--accent-copper-dark) 0%, transparent 70%);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(8, 8, 10, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.navbar {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
}

/* Логотип в шапке и подвале (значок SR) */
.logo-icon-container {
    width: 42px;
    height: 42px;
    overflow: hidden;
    border-radius: 10px;
    border: 1px solid rgba(200, 122, 48, 0.3);
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px rgba(200, 122, 48, 0.1);
}

.logo-icon-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.logo-wrapper:hover .logo-icon-container img {
    transform: scale(1.1);
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

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

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    padding: 180px 0 100px;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* Центральный крупный логотип в Hero */
.hero-logo {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    border: 1px solid rgba(200, 122, 48, 0.4);
    margin-bottom: 2rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(200, 122, 48, 0.15);
    background: #000;
    overflow: hidden;
    display: inline-block;
    animation: floatAnim 4s ease-in-out infinite;
}

.hero-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 2.5rem;
    font-weight: 300;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 600;
    text-decoration: none;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 0 25px rgba(200, 122, 48, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 35px rgba(200, 122, 48, 0.5), 0 0 10px rgba(140, 79, 26, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    box-shadow: none;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    color: var(--text-primary);
    border-color: var(--accent-copper-light);
    background: rgba(200, 122, 48, 0.05);
    box-shadow: 0 0 20px rgba(200, 122, 48, 0.1);
}

/* ==========================================================================
   CATALOG SECTION
   ========================================================================== */
.catalog-section {
    padding: 80px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3.5rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    position: relative;
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 0.8rem;
    background: rgba(255, 255, 255, 0.02);
    padding: 0.4rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
}

.filter-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.6rem 1.4rem;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(200, 122, 48, 0.25);
}

/* Products Grid & Cards */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background: var(--bg-surface);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-normal);
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.01) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    transition: var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-8px);
    background: var(--bg-surface-hover);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(200, 122, 48, 0.08);
}

.product-card:hover::before {
    background: var(--gradient-glow);
}

.product-badge {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(200, 122, 48, 0.3);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-copper-light);
    z-index: 10;
    backdrop-filter: blur(5px);
}

/* Оптимизация размеров фото: контейнер фиксированной высоты + object-fit contain */
.product-image-container {
    position: relative;
    width: 100%;
    height: 230px; /* фиксированная высота контейнера */
    background: #040405; /* темная подложка */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.product-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain; /* картинка видна полностью без обрезки */
    transition: var(--transition-slow);
    padding: 0.75rem; /* отступы, чтобы скриншоты не упирались в края */
}

.product-card:hover .product-image {
    transform: scale(1.03);
}

/* Card Info */
.product-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-name {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.product-tagline {
    font-size: 0.95rem;
    color: var(--accent-copper);
    font-weight: 500;
    margin-bottom: 1.2rem;
}

.product-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* Card Features */
.product-features {
    list-style: none;
    margin-bottom: 2rem;
    margin-top: auto;
}

.product-features li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
}

.product-features li i {
    position: absolute;
    left: 0;
    top: 0.25rem;
    color: var(--accent-copper-light);
}

.product-features li strong {
    color: var(--text-primary);
}

/* Card Actions */
.product-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn-card-download {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    padding: 0.7rem;
}

.btn-card-download:hover {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 0 15px rgba(200, 122, 48, 0.3);
}

.btn-card-demo {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    padding: 0.7rem;
}

.btn-card-demo:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: rgba(200, 122, 48, 0.05);
    box-shadow: 0 0 15px rgba(200, 122, 48, 0.1);
}


/* ==========================================================================
   IN DEVELOPMENT SECTION
   ========================================================================== */
.in-development-section {
    padding: 100px 0 80px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.dev-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2.5rem;
    margin-top: 3rem;
    justify-content: center;
}

.dev-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: var(--transition-normal);
    width: 100%;
    max-width: 380px; /* Match ready product card width exactly */
}

.dev-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(200, 122, 48, 0.05);
}

.dev-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(8, 8, 10, 0.85);
    backdrop-filter: blur(8px);
    border: 1px solid var(--accent-copper-light);
    color: var(--accent-copper-light);
    padding: 0.35rem 0.8rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 10;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.dev-badge i {
    animation: devPulse 1.5s infinite;
}

@keyframes devPulse {
    0% { opacity: 0.4; }
    50% { opacity: 1; }
    100% { opacity: 0.4; }
}

.dev-image-container {
    position: relative;
    height: 250px;
    overflow: hidden;
    background: #09090b; /* Very dark background to blend with mockups */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
}

.dev-image {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Full mockup visibility without cropping */
    transition: var(--transition-slow);
    filter: brightness(0.9);
}

.dev-card:hover .dev-image {
    transform: scale(1.05);
    filter: brightness(1);
}

.dev-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.dev-name {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.dev-tagline {
    font-size: 0.9rem;
    color: var(--accent-copper-light);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dev-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.dev-features {
    list-style: none;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.dev-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.dev-features li:last-child {
    margin-bottom: 0;
}

.dev-features li i {
    color: var(--accent-copper);
    margin-top: 0.25rem;
    font-size: 0.85rem;
}

/* ==========================================================================
   ABOUT SECTION & EXPLANATION OF INSTRUMENTS
   ========================================================================== */
.about-section {
    padding: 100px 0 80px;
    background: linear-gradient(180deg, transparent 0%, var(--bg-secondary) 100%);
    border-top: 1px solid var(--border-color);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1rem;
    font-weight: 300;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--border-hover);
    transform: translateX(5px);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* Раздел: Что мы делаем (Объяснение типов инструментов) */
.edu-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.edu-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 16px;
    transition: var(--transition-normal);
}

.edu-card:hover {
    border-color: rgba(200, 122, 48, 0.2);
    background: rgba(255, 255, 255, 0.02);
}

.edu-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--accent-copper-light);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.edu-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   DONATION SECTION (WIDGET)
   ========================================================================== */
.donation-section {
    padding: 80px 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.donation-card {
    max-width: 650px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(200, 122, 48, 0.2);
    border-radius: 24px;
    padding: 3rem;
    text-align: center;
    backdrop-filter: blur(10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), 0 0 25px rgba(200, 122, 48, 0.05);
}

.donation-icon {
    font-size: 2.5rem;
    color: var(--accent-copper-light);
    margin-bottom: 1.5rem;
    animation: heartbeat 2s infinite;
    display: inline-block;
}

.donation-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.donation-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
    font-weight: 300;
}

.donation-methods {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    align-items: center;
}

/* Поле с картой и кнопкой копирования */
.card-number-box {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.6rem 0.6rem 1.2rem;
    border-radius: 50px;
    width: 100%;
    max-width: 420px;
    justify-content: space-between;
    transition: var(--transition-normal);
}

.card-number-box:hover, .card-number-box.focused {
    border-color: rgba(200, 122, 48, 0.5);
}

.card-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-value {
    font-family: monospace;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.btn-copy {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition-normal);
    position: relative;
}

.btn-copy:hover {
    transform: scale(1.03);
    box-shadow: 0 0 15px rgba(200, 122, 48, 0.4);
}

/* Tooltip "Скопировано" */
.tooltip {
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    background: #000;
    color: var(--accent-copper-light);
    border: 1px solid rgba(200, 122, 48, 0.4);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
}

.tooltip.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.donation-recipient {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
}

/* Кнопка ЮMoney */
.btn-yoomoney {
    background: #8b3ffd; /* фирменный цвет ЮMoney */
    color: #fff;
    width: 100%;
    max-width: 420px;
    border-radius: 50px;
    padding: 0.9rem;
    box-shadow: 0 4px 15px rgba(139, 63, 253, 0.25);
}

.btn-yoomoney:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 63, 253, 0.4);
    background: #9955ff;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background: #050506;
    padding: 80px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    gap: 3rem;
}

.footer-info {
    max-width: 360px;
}

.footer-info .logo-wrapper {
    margin-bottom: 1.2rem;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1.2rem;
    text-decoration: none;
    transition: var(--transition-normal);
}

.social-icons a:hover {
    color: #fff;
    background: var(--gradient-primary);
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(200, 122, 48, 0.3);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.02);
    padding-top: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* ==========================================================================
   MODAL (YOUTUBE POPUP PLAYER)
   ========================================================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(4, 4, 5, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 800px;
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 1px solid rgba(200, 122, 48, 0.2);
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg), 0 0 50px rgba(200, 122, 48, 0.15);
}

.modal.active .modal-content {
    transform: scale(1);
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    color: var(--text-secondary);
    font-size: 2.2rem;
    font-weight: 300;
    cursor: pointer;
    z-index: 1010;
    transition: var(--transition-fast);
    line-height: 1;
}

.close-modal:hover {
    color: var(--text-primary);
}

.video-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 aspect ratio */
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ==========================================================================
   KEYFRAME ANIMATIONS
   ========================================================================== */
@keyframes rotateVinyl {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes floatAnim {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}


/* Card Support Note Link */
.product-support-note {
    font-size: 0.82rem;
    margin-bottom: 1rem;
    text-align: center;
    border-top: 1px dashed var(--border-color);
    padding-top: 0.8rem;
    margin-top: auto;
}

.card-support-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 500;
}

.card-support-link:hover {
    color: var(--accent-copper-light);
}

.card-support-link i {
    color: var(--accent-copper);
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.card-support-link:hover i {
    transform: scale(1.2);
    color: var(--accent-copper-light);
}

/* ==========================================================================
   BILINGUAL SYSTEM & LANGUAGE SWITCHER
   ========================================================================== */
html[lang="en"] .lang-ru {
    display: none !important;
}
html[lang="ru"] .lang-en {
    display: none !important;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    border: 1px solid var(--border-color);
    padding: 0.15rem 0.35rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.02);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    padding: 0.2rem 0.4rem;
    border-radius: 12px;
    transition: var(--transition-fast);
}

.lang-btn.active {
    color: var(--accent-copper-light);
    background: rgba(200, 122, 48, 0.15);
}

.lang-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* Mobile Actions in Header */
.mobile-actions {
    display: none;
    align-items: center;
    gap: 0.8rem;
}

.btn-support-icon {
    color: var(--accent-copper-light);
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(200, 122, 48, 0.3);
    background: rgba(200, 122, 48, 0.05);
    box-shadow: 0 0 10px rgba(200, 122, 48, 0.1);
    transition: var(--transition-normal);
}

.btn-support-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(200, 122, 48, 0.3);
    background: rgba(200, 122, 48, 0.15);
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .edu-cards {
        grid-template-columns: 1fr;
    }
    .dev-grid {
        gap: 1.5rem;
    }
    .dev-image-container {
        height: 220px;
    }
}

@media (max-width: 768px) {
    .navbar {
        height: 70px;
    }
    .bg-glow {
        display: none; /* Hide performance-heavy background glow divs on mobile to prevent overflow-x */
    }
    .nav {
        display: none;
    }
    .logo-text {
        font-size: 1.1rem;
    }
    .logo-icon-container {
        width: 32px;
        height: 32px;
    }
    .logo-wrapper {
        gap: 0.5rem;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .filter-bar {
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
        border-radius: 14px;
        padding: 0.4rem;
    }
    .filter-btn {
        width: 100%;
        padding: 0.6rem 0.5rem;
        text-align: center;
        font-size: 0.82rem;
        border-radius: 8px;
    }
    .mobile-actions {
        display: flex;
    }
    .products-grid {
        grid-template-columns: 1fr;
    }
    .container {
        padding: 0 1.2rem;
    }
    .donation-card {
        padding: 2rem 1rem;
    }
    .card-value {
        font-size: 1rem;
    }
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 2rem;
    }
    .footer-info {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none; /* Hide text on small screens so that Mobile Actions (heart & lang toggle) fit nicely */
    }
    .card-number-box {
        flex-direction: column;
        gap: 0.8rem;
        border-radius: 16px;
        padding: 1rem;
        text-align: center;
    }
    .card-value {
        font-size: 1.25rem;
        letter-spacing: 2px;
    }
    .btn-copy {
        width: 100%;
        justify-content: center;
    }
}

/* Sampler Notice Box & Mirror Links */
.sampler-notice-box {
    background: rgba(200, 122, 48, 0.05);
    border: 1px solid rgba(200, 122, 48, 0.2);
    border-radius: 14px;
    padding: 0.8rem 1.2rem;
    margin: 0rem 0 2.5rem 0;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.sampler-notice-box i {
    color: var(--accent-copper-light);
    margin-right: 0.4rem;
}

.sampler-notice-box .notice-link {
    color: var(--accent-copper-light);
    text-decoration: underline;
    font-weight: 600;
    transition: var(--transition-normal);
}

.sampler-notice-box .notice-link:hover {
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.product-mirror-note {
    text-align: center;
    margin-top: 0.8rem;
    font-size: 0.8rem;
}

.mirror-link {
    color: var(--text-muted);
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.mirror-link:hover {
    color: var(--accent-copper-light);
    text-decoration: underline;
}