/* ============================================
   K-Bot - Trading Bot Landing Page
   Main Stylesheet
   ============================================ */

/* ============================================
   1. CSS Custom Properties (Theme Variables)
   ============================================ */

:root {
    /* Core colors - Dark theme (default) */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a2e;
    --color-bg-card: rgba(26, 26, 46, 0.6);
    --color-bg-card-hover: rgba(30, 30, 55, 0.8);
    --color-bg-glass: rgba(255, 255, 255, 0.05);
    --color-bg-glass-hover: rgba(255, 255, 255, 0.1);
    
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-tertiary: #6b6b80;
    --color-text-inverse: #0a0a0f;
    
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    
    /* Accent colors */
    --color-primary: #22c55e;
    --color-primary-hover: #4ade80;
    --color-primary-light: rgba(34, 197, 94, 0.15);
    --color-secondary: #ffffff;
    --color-accent: #86efac;
    
    /* Gradient - pure green, no white mixing */
    --gradient-primary: linear-gradient(135deg, #16a34a 0%, #22c55e 50%, #4ade80 100%);
    --gradient-hero: radial-gradient(ellipse at 20% 50%, rgba(34, 197, 94, 0.12) 0%, transparent 50%),
                     radial-gradient(ellipse at 80% 20%, rgba(34, 197, 94, 0.08) 0%, transparent 50%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(34, 197, 94, 0.25);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Header */
    --header-height: 72px;
}

/* Light theme */
[data-theme="light"] {
    --color-bg-primary: #fafafa;
    --color-bg-secondary: #f0f0f5;
    --color-bg-tertiary: #e8e8f0;
    --color-bg-card: rgba(255, 255, 255, 0.8);
    --color-bg-card-hover: rgba(255, 255, 255, 0.95);
    --color-bg-glass: rgba(255, 255, 255, 0.6);
    --color-bg-glass-hover: rgba(255, 255, 255, 0.8);
    
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a4a5a;
    --color-text-tertiary: #7a7a8a;
    --color-text-inverse: #ffffff;
    
    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-hover: rgba(0, 0, 0, 0.15);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(34, 197, 94, 0.15);
}

/* ============================================
   2. Reset & Base Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-slow), color var(--transition-slow);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
    list-style: none;
}

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

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

code {
    font-family: var(--font-mono);
}

/* ============================================
   3. Utility Classes
   ============================================ */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

/* ============================================
   4. Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.4);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(34, 197, 94, 0.5);
}

.btn--outline {
    background: var(--color-bg-glass);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.btn--outline:hover {
    background: var(--color-bg-glass-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.btn--sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn--lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn--xl {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn--full {
    width: 100%;
}

/* ============================================
   5. Header / Navigation
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    background: transparent;
    transition: all var(--transition-base);
}

.header--scrolled {
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo__icon {
    width: 36px;
    height: 36px;
}

.nav__list {
    display: flex;
    gap: var(--spacing-xl);
}

.nav__link {
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 100%;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header__cta svg {
    width: 16px;
    height: 16px;
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background: var(--color-bg-glass-hover);
    border-color: var(--color-border-hover);
}

.theme-toggle__icon {
    width: 20px;
    height: 20px;
    position: absolute;
    transition: all var(--transition-base);
}

.theme-toggle__icon--sun {
    opacity: 0;
    transform: rotate(90deg) scale(0);
}

.theme-toggle__icon--moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="light"] .theme-toggle__icon--sun {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="light"] .theme-toggle__icon--moon {
    opacity: 0;
    transform: rotate(-90deg) scale(0);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 10px;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.mobile-menu-btn--active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn--active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn--active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--color-bg-primary);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
}

.mobile-menu--active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
}

.mobile-menu__link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.mobile-menu__cta {
    margin-top: var(--spacing-lg);
}

/* ============================================
   6. Hero Section
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: calc(var(--header-height) + var(--spacing-4xl)) 0 var(--spacing-4xl);
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero__bg-gradient {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

.hero__bg-gradient--1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    left: -100px;
    opacity: 0.15;
}

.hero__bg-gradient--2 {
    width: 500px;
    height: 500px;
    background: var(--color-secondary);
    bottom: -150px;
    right: -100px;
    opacity: 0.1;
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    backdrop-filter: blur(10px);
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero__title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.hero__description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 520px;
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero__stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.hero__stat {
    display: flex;
    flex-direction: column;
}

.hero__stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__stat-label {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.hero__stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero Visual / Telegram Mockup */
.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.telegram-mockup {
    width: 100%;
    max-width: 380px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.telegram-mockup__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-glass);
    border-bottom: 1px solid var(--color-border);
}

.telegram-mockup__avatar svg {
    width: 44px;
    height: 44px;
}

.telegram-mockup__info {
    display: flex;
    flex-direction: column;
}

.telegram-mockup__name {
    font-weight: 600;
    font-size: 1rem;
}

.telegram-mockup__status {
    font-size: 0.8125rem;
    color: #22c55e;
}

.telegram-mockup__messages {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    min-height: 320px;
}

.message {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.message--user {
    align-items: flex-end;
}

.message__bubble {
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border-bottom-left-radius: var(--radius-sm);
    font-size: 0.875rem;
    line-height: 1.5;
    max-width: 85%;
}

.message__bubble--user {
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-sm);
}

.message__time {
    font-size: 0.6875rem;
    color: var(--color-text-tertiary);
    padding: 0 var(--spacing-sm);
}

.message__inline {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.inline-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.inline-btn:hover {
    background: var(--color-primary);
    color: white;
}

/* Scroll Indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-tertiary);
    font-size: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

.hero__scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    position: relative;
}

.hero__scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--color-text-tertiary);
    border-radius: var(--radius-full);
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ============================================
   7. Section Common Styles
   ============================================ */

section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--spacing-3xl);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   8. Features Section
   ============================================ */

.features {
    background: var(--color-bg-secondary);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.feature-card__icon svg {
    width: 24px;
    height: 24px;
}

.feature-card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-card__description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   9. Commands Section
   ============================================ */

.commands__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.commands__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.command-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.command-item:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateX(4px);
}

.command-item__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.command-item__name {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.command-item__badge {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    background: var(--color-bg-glass);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.command-item__desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Terminal Mockup */
.terminal-mockup {
    background: #1e1e2e;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-xl));
}

.terminal-mockup__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--color-border);
}

.terminal-mockup__dots {
    display: flex;
    gap: 6px;
}

.terminal-mockup__dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-mockup__dots span:nth-child(1) {
    background: #ff5f56;
}

.terminal-mockup__dots span:nth-child(2) {
    background: #ffbd2e;
}

.terminal-mockup__dots span:nth-child(3) {
    background: #27c93f;
}

.terminal-mockup__title {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    font-weight: 500;
}

.terminal-mockup__body {
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.8;
}

.terminal-line {
    display: flex;
    gap: var(--spacing-sm);
}

.terminal-prompt {
    color: var(--color-primary);
    font-weight: 600;
}

.terminal-command {
    color: #e0e0e0;
}

.terminal-output {
    color: var(--color-text-secondary);
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.terminal-output--success {
    color: #22c55e;
}

.terminal-line--cursor {
    position: relative;
}

.terminal-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: var(--color-primary);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ============================================
   10. Pricing Section
   ============================================ */

.pricing {
    background: var(--color-bg-secondary);
    position: relative;
}

.pricing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    align-items: start;
}

.pricing-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.pricing-card--featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

.pricing-card--featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.pricing-card__popular {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-card__header {
    margin-bottom: var(--spacing-lg);
}

.pricing-card__name {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.pricing-card__desc {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.pricing-card__price {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.pricing-card__amount {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-card__period {
    font-size: 0.9375rem;
    color: var(--color-text-tertiary);
}

.pricing-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.pricing-card__features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.pricing-card__features li svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: #22c55e;
}

.pricing-card__feature--disabled {
    color: var(--color-text-tertiary);
    opacity: 0.5;
}

.pricing-card__feature--disabled svg {
    color: var(--color-text-tertiary);
}

/* ============================================
   11. FAQ Section
   ============================================ */

.faq__list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.faq-item:hover {
    border-color: var(--color-border-hover);
}

.faq-item--active {
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.1);
}

.faq-item__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-item__question:hover {
    color: var(--color-primary);
}

.faq-item__icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-item--active .faq-item__icon {
    transform: rotate(180deg);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item--active .faq-item__answer {
    max-height: 300px;
}

.faq-item__answer p {
    padding: 0 var(--spacing-xl) var(--spacing-lg);
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   12. CTA Section
   ============================================ */

.cta {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

.cta__content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
    padding: var(--spacing-4xl) var(--spacing-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.cta__content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

.cta__title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta__description {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

/* ============================================
   13. Footer
   ============================================ */

.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer__group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer__group a {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer__group a:hover {
    color: var(--color-primary);
}

.footer__socials {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer__socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.footer__socials a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.footer__support-link {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: auto !important;
    height: auto !important;
    padding: 8px 16px !important;
    gap: 8px !important;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-lg) !important;
    background: var(--color-bg-glass) !important;
    border: 1px solid var(--color-border) !important;
    color: var(--color-text-secondary) !important;
    transition: all var(--transition-fast) !important;
}

.footer__support-link:hover {
    background: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    color: white !important;
    transform: translateY(-2px) !important;
}

.footer__support-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.footer__bottom {
    display: none;
}

/* ============================================
   14. Scroll to Top Button
   ============================================ */

.scroll-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    z-index: 100;
}

.scroll-top--visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.scroll-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   15. Animations
   ============================================ */

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll--visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation delays */
.animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }
.animate-on-scroll:nth-child(5) { transition-delay: 0.4s; }
.animate-on-scroll:nth-child(6) { transition-delay: 0.5s; }

/* ============================================
   16. Responsive Design
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --container-padding: 1.25rem;
    }
    
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-3xl);
    }
    
    .hero__description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero__actions {
        justify-content: center;
    }
    
    .hero__stats {
        justify-content: center;
    }
    
    .hero__visual {
        order: -1;
    }
    
    .telegram-mockup {
        max-width: 340px;
    }
    
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .commands__layout {
        grid-template-columns: 1fr;
    }
    
    .terminal-mockup {
        position: static;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .pricing__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card--featured {
        transform: scale(1);
    }
    
    .pricing-card--featured:hover {
        transform: translateY(-8px);
    }
    
    .footer__content {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .footer__links {
        justify-content: center;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --spacing-4xl: 4rem;
    }
    
    .nav {
        display: none;
    }
    
    .header__cta {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--spacing-3xl));
        padding-bottom: var(--spacing-3xl);
    }
    
    .hero__title {
        font-size: 2rem;
    }
    
    .hero__description {
        font-size: 1rem;
    }
    
    .hero__actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero__stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero__stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .hero__scroll {
        display: none;
    }
    
    .features__grid {
        grid-template-columns: 1fr;
    }
    
    .pricing__grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer__group {
        justify-content: center;
    }
    
.footer__copyright {
    font-size: 0.7rem !important;
    color: #555555 !important;
    opacity: 0.4 !important;
    white-space: nowrap;
}

.footer__socials {
        gap: var(--spacing-sm);
    }
    
    section {
        padding: var(--spacing-3xl) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .telegram-mockup {
        max-width: 100%;
    }
    
    .cta__content {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }
    
    .btn--xl {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}