/* ============================================
   TSS — Туда-Сюда Системс Design System
   ============================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
    /* Colors */
    --color-bg-primary: #0B0F1A;
    --color-bg-secondary: #111827;
    --color-bg-card: rgba(255, 255, 255, 0.04);
    --color-bg-card-hover: rgba(255, 255, 255, 0.07);
    --color-bg-glass: rgba(255, 255, 255, 0.05);
    --color-bg-input: #1a1f2e;

    --color-accent: #3B82F6;
    --color-accent-hover: #2563EB;
    --color-accent-light: rgba(59, 130, 246, 0.15);
    --color-accent-gradient: linear-gradient(135deg, #3B82F6, #6366F1);

    --color-success: #10B981;
    --color-success-light: rgba(16, 185, 129, 0.15);
    --color-warning: #F59E0B;
    --color-danger: #EF4444;

    --color-text-primary: #F1F5F9;
    --color-text-secondary: #94A3B8;
    --color-text-muted: #64748B;

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);

    /* Typography */
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Container */
    --container-max: 1200px;
    --container-narrow: 800px;
}

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

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

body {
    font-family: var(--font-body);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

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

ul,
ol {
    list-style: none;
}

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.text-accent {
    color: var(--color-accent);
}

.text-success {
    color: var(--color-success);
}

.text-muted {
    color: var(--color-text-muted);
}

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

/* --- Layout --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

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

.section-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    display: block;
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 640px;
    margin-bottom: var(--space-2xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 28px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: #fff;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.45);
    color: #fff;
}

.btn-secondary {
    background: var(--color-bg-card);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

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

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

.btn-icon {
    font-size: 1.1em;
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--transition-base);
    background: transparent;
}

.header.scrolled {
    background: rgba(11, 15, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm) 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-accent-gradient);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.logo-text {
    font-size: 1.1rem;
}

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

.nav-link {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    text-decoration: none;
}

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

.header-cta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-sm);
}

/* Mobile Nav */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 15, 26, 0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    padding: 80px var(--space-lg) var(--space-lg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.mobile-nav-link {
    color: var(--color-text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    text-decoration: none;
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 80px;
}

#gradient-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    --gradient-color-1: #0B0F1A;
    --gradient-color-2: #0f1b3d;
    --gradient-color-3: #1e1b4b;
    --gradient-color-4: #0f172a;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-accent-light);
    color: var(--color-accent);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero-title {
    margin-bottom: var(--space-lg);
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
    max-width: 640px;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: left;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* --- Cards --- */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    backdrop-filter: blur(12px);
}

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

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.card-text {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- Feature Grid --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

/* --- Pipeline / How It Works --- */
.pipeline {
    position: relative;
}

.pipeline-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    position: relative;
}

.pipeline-step {
    text-align: center;
    position: relative;
}

.pipeline-step-number {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    color: #fff;
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto var(--space-md);
    position: relative;
    z-index: 1;
}

.pipeline-step-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.pipeline-step-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* connector line between steps (desktop) */
.pipeline-steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: calc(12.5% + 28px);
    right: calc(12.5% + 28px);
    height: 2px;
    background: var(--color-border);
    z-index: 0;
}

/* --- Pricing --- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    max-width: 900px;
    margin: 0 auto;
}

.pricing-grid.pricing-grid-3 {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1100px;
}

.pricing-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.pricing-card.featured {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.pricing-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--color-accent-gradient);
    color: #fff;
    padding: 4px 12px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: var(--radius-full, 999px);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.pricing-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.pricing-price {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
    line-height: 1.1;
}

.pricing-period {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-lg);
}

.pricing-features {
    margin-bottom: var(--space-xl);
}

.pricing-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.pricing-feature::before {
    content: '✓';
    color: var(--color-success);
    font-weight: 700;
    flex-shrink: 0;
}

/* --- VM Block --- */
.vm-block {
    margin-top: var(--space-xl);
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.vm-block-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
}

.vm-block-text {
    flex: 1;
}

.vm-block-cta {
    text-align: center;
    flex-shrink: 0;
}

/* --- Portfolio --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.portfolio-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-hover);
}

.portfolio-card-body {
    padding: var(--space-xl);
}

.portfolio-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: var(--space-xs);
    margin-bottom: var(--space-sm);
}

/* --- FAQ --- */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) 0;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-accent);
}

.faq-arrow {
    transition: transform var(--transition-base);
    flex-shrink: 0;
    font-size: 1.2rem;
}

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

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

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding-bottom: var(--space-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* --- CTA Section --- */
.cta-section {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    text-align: center;
}

.cta-section .section-title {
    margin-bottom: var(--space-md);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: var(--space-md);
    max-width: 320px;
}

.footer-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-link {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    transition: color var(--transition-fast);
    text-decoration: none;
}

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

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.footer-legal {
    display: flex;
    gap: var(--space-lg);
}

.footer-legal a {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    text-decoration: none;
}

.footer-legal a:hover {
    color: var(--color-text-primary);
}

/* --- Form --- */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
}

.form-select {
    appearance: auto;
    -webkit-appearance: auto;
}

.form-select option {
    background: var(--color-bg-input);
    color: var(--color-text-primary);
    padding: 8px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    margin-top: 3px;
    accent-color: var(--color-accent);
    flex-shrink: 0;
    width: 16px;
    height: 16px;
}

.form-checkbox a {
    color: var(--color-accent);
    text-decoration: none;
}

.form-checkbox a:hover {
    text-decoration: underline;
}

/* --- Target / ICP cards --- */
.target-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.target-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.target-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.target-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.target-title {
    font-size: 0.95rem;
    font-weight: 600;
}

/* --- Modal --- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.modal-title {
    margin-bottom: var(--space-lg);
}

/* --- Visual Results --- */
.visual-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    margin-top: var(--space-2xl);
}

.visual-content h3 {
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.visual-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.visual-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.visual-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.visual-feature-icon {
    font-size: 1.5rem;
    background: var(--color-bg-glass);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.visual-feature-content h5 {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 0.95rem;
}

.visual-feature-content p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Telegram Mockup */
.mockup-container {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.tg-phone {
    background: #0f172a;
    /* Dark border */
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), inset 0 0 0 2px rgba(255, 255, 255, 0.1);
    position: relative;
}

.tg-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 25px;
    background: #0f172a;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
    z-index: 10;
}

.tg-screen {
    background: #0F172A;
    /* Match header dark */
    border-radius: 30px;
    overflow: hidden;
    height: 600px;
    display: flex;
    flex-direction: column;
}

.tg-header {
    background: #17212b;
    padding: 35px 20px 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.3);
}

.tg-avatar {
    width: 40px;
    height: 40px;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
}

.tg-title {
    flex: 1;
}

.tg-name {
    font-weight: 600;
    font-size: 1.05rem;
    color: #fff;
    margin-bottom: 2px;
}

.tg-status {
    font-size: 0.8rem;
    color: #8b9eb0;
}

.tg-body {
    background: #0e1621;
    flex: 1;
    padding: 20px 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.tg-message {
    background: #182533;
    border-radius: 12px;
    border-bottom-left-radius: 4px;
    padding: 12px 14px;
    align-self: flex-start;
    max-width: 90%;
    position: relative;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.tg-message-time {
    font-size: 0.7rem;
    color: #6a7f92;
    text-align: right;
    margin-top: 4px;
}

.msg-header {
    font-weight: 600;
    color: #58a9e6;
    margin-bottom: 8px;
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 6px;
}

.msg-item {
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: #e4ebf0;
    line-height: 1.4;
}

.msg-val {
    font-weight: 600;
    color: #fff;
}

.msg-val.good {
    color: var(--color-success);
}

.msg-val.bad {
    color: var(--color-danger);
}

.msg-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.05);
    margin: 8px 0;
}

.tg-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.tg-btn {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #58a9e6;
    text-align: center;
    padding: 8px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none !important;
}

/* Float Animation for Mockup */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

.mockup-container {
    animation: float 6s ease-in-out infinite;
}

/* --- ROI Calculator --- */
.calc-container {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    backdrop-filter: blur(12px);
    margin-top: var(--space-2xl);
}

.calc-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: var(--space-3xl);
}

.calc-group {
    margin-bottom: var(--space-xl);
}

.calc-label {
    display: block;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
    font-weight: 500;
}

.calc-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--color-bg-input);
    border-radius: var(--radius-full);
    outline: none;
    margin-bottom: var(--space-sm);
}

.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

.calc-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.calc-val-display {
    text-align: right;
    font-family: var(--font-mono);
    color: var(--color-accent);
    font-weight: 600;
}

.calc-results {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.calc-result-box {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
}

.calc-result-box.highlight {
    background: var(--color-accent-light);
    border-color: rgba(59, 130, 246, 0.3);
}

.calc-result-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.calc-result-box.highlight .calc-result-label {
    color: var(--color-text-primary);
}

.calc-result-value {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-text-primary);
}

.calc-result-subtext {
    font-size: 0.8rem;
    color: var(--color-success);
    margin-top: 4px;
    font-weight: 500;
}

.calc-final {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px dashed var(--color-border);
}

/* --- Case Studies --- */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.case-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-hover);
}

.case-tags {
    margin-bottom: var(--space-md);
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.case-tag {
    background: var(--color-bg-input);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-mono);
}

.case-title {
    font-size: 1.4rem;
    margin-bottom: var(--space-lg);
}

.case-metrics {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px dashed var(--color-border);
}

.case-metric {
    display: flex;
    flex-direction: column;
}

.case-metric-val {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.case-metric-val.bad {
    color: var(--color-danger);
    font-size: 1.25rem;
}

.case-metric-val.good {
    color: var(--color-success);
}

.case-metric-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.case-desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

/* --- Hero Grid (Bicotender style) --- */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-visual {
    position: relative;
    height: 500px;
}

.hero-mockup {
    position: absolute;
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    transition: transform 0.4s ease;
}

.hero-mockup:hover {
    transform: translateY(-6px) scale(1.02);
}

.hero-mockup-1 {
    width: 300px;
    top: 10%;
    left: 0;
    z-index: 2;
    animation: floatMockup1 6s ease-in-out infinite;
}

.hero-mockup-2 {
    width: 260px;
    top: 5%;
    right: 0;
    z-index: 3;
    animation: floatMockup2 7s ease-in-out infinite;
}

.hero-mockup-3 {
    width: 280px;
    bottom: 5%;
    left: 10%;
    z-index: 1;
    animation: floatMockup3 8s ease-in-out infinite;
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mockup-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.mockup-dot.red {
    background: #EF4444;
}

.mockup-dot.yellow {
    background: #F59E0B;
}

.mockup-dot.green {
    background: #10B981;
}

.mockup-title {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 0.9rem;
    margin-left: var(--space-sm);
}

.mockup-line {
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    margin-bottom: 6px;
}

.mockup-line.short {
    width: 60%;
}

.mockup-line.medium {
    width: 80%;
}

.mockup-line.accent {
    background: rgba(59, 130, 246, 0.25);
}

.mockup-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.8rem;
}

.mockup-stat-val {
    color: var(--color-accent);
    font-weight: 600;
    font-family: var(--font-mono);
}

.mockup-badge {
    display: inline-block;
    background: var(--color-success);
    color: #fff;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
}

.mockup-badge.warning {
    background: var(--color-warning);
}

@keyframes floatMockup1 {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-12px);
    }
}

@keyframes floatMockup2 {

    0%,
    100% {
        transform: translateY(0px) rotate(1deg);
    }

    50% {
        transform: translateY(-8px) rotate(-1deg);
    }
}

@keyframes floatMockup3 {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* --- Logos Strip (Marquee) --- */
.logos-section {
    padding: var(--space-2xl) 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}

.logos-track {
    display: flex;
    gap: var(--space-3xl);
    animation: marquee 30s linear infinite;
    width: max-content;
}

.logos-track:hover {
    animation-play-state: paused;
}

.logo-item {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.25);
    white-space: nowrap;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color var(--transition-base);
}

.logo-item:hover {
    color: rgba(255, 255, 255, 0.5);
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* --- Big Stats Section --- */
.stats-section {
    background: var(--color-bg-primary);
    text-align: center;
    padding: var(--space-4xl) 0;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.stats-section .section-subtitle {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--space-3xl);
}

.big-stats-grid {
    display: flex;
    justify-content: center;
    gap: var(--space-4xl);
    flex-wrap: wrap;
}

.big-stat {
    text-align: center;
}

.big-stat-number {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    margin-bottom: var(--space-sm);
}

.big-stat-label {
    font-size: 1rem;
    color: var(--color-text-muted);
}

/* --- Alternating Feature Rows --- */
.feature-row-section {
    padding: var(--space-4xl) 0;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    margin-bottom: var(--space-4xl);
}

.feature-row:last-child {
    margin-bottom: 0;
}

.feature-row.reversed .feature-row-text {
    order: 2;
}

.feature-row.reversed .feature-row-visual {
    order: 1;
}

.feature-row-text .section-label {
    text-align: left;
}

.feature-row-text h3 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.feature-row-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.feature-row-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 350px;
}

.feature-visual-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.feature-visual-card::before {
    content: '';
    position: absolute;
    inset: -40px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.feature-visual-card .card-icon {
    width: 56px;
    height: 56px;
    font-size: 1.8rem;
    margin-bottom: var(--space-lg);
}

.visual-list-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.visual-list-item:last-child {
    border-bottom: none;
}

.visual-list-icon {
    color: var(--color-success);
    font-weight: 700;
    flex-shrink: 0;
}

/* --- Light Pricing Theme --- */
.pricing-light {
    background: #f0f4f8 !important;
}

.pricing-light .section-label {
    color: var(--color-accent);
}

.pricing-light .section-title {
    color: #1a202c;
}

.pricing-light .section-subtitle {
    color: #4a5568;
}

.pricing-light .pricing-card {
    background: #fff;
    border-color: #e2e8f0;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.pricing-light .pricing-card.featured {
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.25);
}

.pricing-light .pricing-card.featured .pricing-label,
.pricing-light .pricing-card.featured .pricing-price,
.pricing-light .pricing-card.featured .pricing-period,
.pricing-light .pricing-card.featured .pricing-feature {
    color: #fff;
}

.pricing-light .pricing-card.featured .pricing-feature::before {
    color: #fff;
}

.pricing-light .pricing-label {
    color: var(--color-accent);
}

.pricing-light .pricing-price {
    color: #1a202c;
}

.pricing-light .pricing-period {
    color: #718096;
}

.pricing-light .pricing-feature {
    color: #4a5568;
}

.pricing-light .pricing-feature::before {
    color: var(--color-accent);
}

.pricing-light .btn-secondary {
    background: #fff;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.pricing-light .btn-secondary:hover {
    background: var(--color-accent-light);
}

.pricing-light .vm-block-inner {
    background: #fff;
    border-color: #e2e8f0;
}

.pricing-light .vm-block-inner h3,
.pricing-light .vm-block-inner .pricing-price {
    color: #1a202c;
}

.pricing-light .vm-block-inner p {
    color: #4a5568;
}

.pricing-light .vm-block-inner .pricing-period {
    color: #718096;
}

/* --- Light Footer --- */
.footer-light {
    background: #f0f4f8;
    border-top: 1px solid #e2e8f0;
}

.footer-light .logo-icon {
    background: var(--color-accent-gradient);
    color: #fff;
}

.footer-light .logo-text {
    color: #1a202c;
}

.footer-light .footer-brand p {
    color: #718096;
}

.footer-light .footer-title {
    color: #1a202c;
}

.footer-light .footer-link {
    color: #718096;
}

.footer-light .footer-link:hover {
    color: var(--color-accent);
}

.footer-light .footer-bottom {
    border-top-color: #e2e8f0;
}

.footer-light .footer-copyright {
    color: #a0aec0;
}

.footer-light .footer-legal a {
    color: #a0aec0;
}

.footer-light .footer-legal a:hover {
    color: var(--color-accent);
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
    }

    50% {
        box-shadow: 0 0 0 12px rgba(59, 130, 246, 0);
    }
}

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

.pulse-animation {
    animation: pulse 2s infinite;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pipeline-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .pipeline-steps::before {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .target-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }

    .feature-row {
        gap: var(--space-xl);
    }

    .big-stats-grid {
        gap: var(--space-2xl);
    }
}

@media (max-width: 768px) {
    body {
        overflow-x: hidden;
    }

    section {
        padding: var(--space-3xl) 0;
    }

    .nav {
        display: none;
    }

    .header-cta .btn {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
        margin-right: var(--space-md);
    }

    .hero {
        min-height: auto;
        padding-top: 120px;
        padding-bottom: var(--space-3xl);
    }

    .hero-stats {
        gap: var(--space-lg);
    }

    .hero-grid {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        display: none;
    }

    .feature-row {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .feature-row.reversed .feature-row-text {
        order: 1;
    }

    .feature-row.reversed .feature-row-visual {
        order: 2;
    }

    .feature-row-visual {
        min-height: 250px;
    }

    .big-stats-grid {
        gap: var(--space-2xl);
    }

    .header {
        z-index: 1000 !important;
    }

    .logos-section {
        position: relative;
        z-index: 10;
        margin-top: var(--space-xl);
    }

    .big-stat-number {
        font-size: clamp(2rem, 10vw, 3.5rem);
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .pipeline-steps {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .vm-block-inner {
        flex-direction: column;
        text-align: center;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-legal {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .target-grid {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}