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

:root {
    /* Цветовая палитра */
    --color-bg-main: #0b111a;
    --color-bg-secondary: #16202c;
    --color-bg-card: #1f2b3b;
    --color-primary: #2289e4;
    --color-primary-hover: #4fa4f0;
    --color-accent: #ffc107;
    --color-text-main: #ffffff;
    --color-text-secondary: #94a3b8;
    --color-border: #2d3748;
    
    /* Градиенты */
    --gradient-primary: linear-gradient(135deg, #2289e4 0%, #1a6cb5 100%);
    --gradient-glow: linear-gradient(135deg, rgba(34, 137, 228, 0.2) 0%, rgba(34, 137, 228, 0) 100%);

    /* Типографика */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.25rem;
    --fs-xl: clamp(1.5rem, 4vw, 2.5rem);
    
    /* Отступы и размеры */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 2rem;
    
    /* Эффекты */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(34, 137, 228, 0.3);
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-main);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Сетка и Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.row-center {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.col-xs-12 {
    width: 100%;
    flex: 0 0 100%;
}

.center {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* Header Styles */
header.bg-bk {
    background: radial-gradient(circle at top center, var(--color-bg-secondary), var(--color-bg-main));
    padding: var(--spacing-lg) 0;
    position: relative;
    border-bottom: 1px solid var(--color-border);
}

.logo {
    width: clamp(150px, 30vw, 220px);
    height: auto;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 10px rgba(34, 137, 228, 0.4));
    transition: var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 20px rgba(34, 137, 228, 0.6));
}

h1 {
    font-size: var(--fs-xl);
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 span {
    color: var(--color-primary);
    display: block;
    font-size: 1.2em;
    text-shadow: 0 0 20px rgba(34, 137, 228, 0.5);
}

/* Promo Card Block */
.item-promo-kod {
    background: rgba(31, 43, 59, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    align-items: center;
    max-width: 900px;
    width: 100%;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.item-promo-kod:hover {
    box-shadow: var(--shadow-glow);
    border-color: rgba(34, 137, 228, 0.3);
}

.item-name {
    text-align: left;
    padding: 0 var(--spacing-sm);
}

.item-title {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.item-title.color {
    color: var(--color-primary);
}

.item-text {
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--color-text-main);
}

/* Copy Section styling */
.item-copy {
    background: rgba(0, 0, 0, 0.2);
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
    text-align: center;
}

.item-copy:hover {
    background: rgba(34, 137, 228, 0.1);
    transform: translateY(-2px);
}

.item-copy:active {
    transform: translateY(0);
    background: rgba(34, 137, 228, 0.2);
}

.item-copy p {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
}

.promo-text {
    font-family: monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.1em;
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    background: var(--gradient-primary);
    color: white;
    font-weight: 700;
    font-size: 1.125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-base);
    box-shadow: 0 4px 15px rgba(34, 137, 228, 0.4);
    border: none;
    position: relative;
    overflow: hidden;
    margin-top: var(--spacing-sm);
}

.button::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(34, 137, 228, 0.6);
}

.button:hover::after {
    opacity: 1;
}

.button:active {
    transform: translateY(-1px);
}

/* Main Content Styling */
.content {
    padding: var(--spacing-lg) 0;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--color-text-main);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: 1rem;
    border-left: 4px solid var(--color-primary);
}

p {
    margin-bottom: 1.5rem;
    color: #cbd5e1;
    font-size: 1.1rem;
}

ul {
    list-style: none;
    margin-bottom: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

ul li {
    position: relative;
    padding-left: 2rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    color: var(--color-text-main);
    padding-right: 1rem;
    transition: var(--transition-base);
    border: 1px solid transparent;
}

ul li:hover {
    border-color: rgba(34, 137, 228, 0.3);
    transform: translateX(5px);
}

ul li::before {
    content: '✓';
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.2em;
}

/* Images */
.img {
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    position: relative;
}

.img img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.img:hover img {
    transform: scale(1.02);
}

/* Text center wrapper override */
.text-center {
    text-align: center;
    margin: var(--spacing-md) 0;
}

/* Footer */
footer {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

footer p {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 0;
    opacity: 0.7;
    max-width: 800px;
}

/* Адаптивность (Mobile) */
@media (max-width: 768px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2.5rem;
    }

    .item-promo-kod {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .item-name {
        text-align: center;
        border-bottom: 1px solid rgba(255,255,255,0.05);
        padding-bottom: var(--spacing-sm);
    }
    
    .item-name:last-of-type {
        border-bottom: none;
    }

    h1 span {
        font-size: 1.1em;
    }

    ul {
        grid-template-columns: 1fr;
    }

    .button {
        width: 100%;
        max-width: 320px;
    }
}

/* Анимации появления */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.content > div {
    animation: fadeIn 0.8s ease-out;
}