/* ========================================
   CSS Variables (Design Tokens)
   ======================================== */
:root {
    /* Colors - DARK MODE */
    --background: #000000;
    --foreground: #fafafa;
    --card: #000000;
    --card-foreground: #fafafa;
    --primary: #fafafa;
    --primary-foreground: #000000;
    --secondary: #000000;
    --secondary-foreground: #fafafa;
    --muted: #000000;
    --muted-foreground: #a1a1aa;
    --accent: #02ada1;
    --accent-foreground: #000000;
    --border: rgba(250, 250, 250, 0.1);
    --input: rgba(250, 250, 250, 0.2);
    --ring: #fafafa;

    /* Spacing */
    --spacing-0: 0px;
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-9: 36px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-20: 80px;
    --spacing-24: 96px;
    --spacing-32: 128px;
    --spacing-48: 192px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    --radius-full: 9999px;

    /* Typography */
    --font-rubik: 'Rubik', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-inter: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-base: all 0.2s ease-in-out;
    --transition-slow: all 0.3s ease-in-out;
}

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

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

body {
    font-family: var(--font-rubik);
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.5;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-base);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   Container
   ======================================== */
.container {
    max-width: 1312px;
    margin: 0 auto;
    padding-left: var(--spacing-8);
    padding-right: var(--spacing-8);
    width: 100%;
}

@media (max-width: 768px) {
    .container {
        padding-left: var(--spacing-4);
        padding-right: var(--spacing-4);
    }
}

/* ========================================
   Typography
   ======================================== */
.section-title {
    font-family: 'Rubik';
    font-style: normal;
    font-weight: 500;
    font-size: 48px;
    line-height: 100%;
    display: flex;
    align-items: center;
    color: #FAFAFA;
    flex: none;
    order: 0;
    flex-grow: 0;
}

/* Заголовок для features-grid */
.features-grid .section-title {
    width: 783px;
    height: 48px;
    max-width: 100%;
}

.section-title-large {
    font-family: var(--font-rubik);
    font-size: 60px;
    font-weight: 500;
    line-height: 1;
    color: var(--foreground);
    text-align: center;
    text-shadow: 0px 25px 50px rgba(0, 0, 0, 0.25);
    background: linear-gradient(180deg, var(--foreground) 0%, var(--muted-foreground) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-family: var(--font-rubik);
    font-size: 20px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--muted-foreground);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-12);
}

@media (max-width: 768px) {
    .section-title {
        font-size: 32px;
    }

    .section-title-large {
        font-size: 36px;
    }

    .section-description {
        font-size: 16px;
    }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-family: var(--font-rubik);
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    border-radius: 25px;
    transition: var(--transition-base);
    white-space: nowrap;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(180deg, #fafafa 0%, #e4e4e7 100%);
    color: #18181b;
    box-shadow: 0px 1px 2px -1px rgba(0, 0, 0, 0.1), 0px 1px 3px 0px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--muted-foreground);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--secondary);
    color: var(--secondary-foreground);
}

.btn-lg {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: 14px;
}

.btn-cta {
    padding: 10px var(--spacing-4);
    font-size: 24px;
    line-height: 32px;
    border-radius: 45px;
    background: linear-gradient(180deg, #fafafa 0%, #e4e4e7 100%);
    color: #18181b;
}

.btn-cta:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl);
}

.btn-pricing {
    width: 100%;
    padding: 10px var(--spacing-4);
    font-size: 18px;
    line-height: 28px;
    border-radius: 10px;
    background: linear-gradient(180deg, #fafafa 0%, #e4e4e7 100%);
    color: #18181b;
    box-shadow: var(--shadow-md);
}

.btn-pricing:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-pricing-popular {
    background: linear-gradient(180deg, var(--accent) 0%, #028c82 100%);
    color: white;
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ========================================
   Utilities
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.text-gradient {
    background: linear-gradient(180deg, var(--foreground) 0%, var(--muted-foreground) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}