/* ============================================
   ПЕРЕМЕННЫЕ
   ============================================ */
:root {
    --color-primary: #1A1A2E;
    --color-accent: rgb(54, 112, 226);
    --color-accent-hover: rgb(40, 90, 190);
    --color-text: #2D2D3A;
    --color-text-light: #6B7280;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F5F7FA;
    --color-border: #E5E7EB;
    --color-card-bg: #FFFFFF;
    --color-footer-bg: #1A1A2E;
    --color-footer-text: #A0A6B1;

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    --section-padding: 100px 0;
    --container-width: 1120px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

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

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: var(--color-accent);
    transition: color 0.2s;
}

a:hover {
    color: var(--color-accent-hover);
}

ul, ol {
    list-style: none;
}

/* ============================================
   УТИЛИТЫ
   ============================================ */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

/* ============================================
   КНОПКИ
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.25s;
    font-family: var(--font-main);
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(54, 112, 226, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-outline:hover {
    background: var(--color-accent);
    color: #fff;
}