/* ==========================================================================
   CSS Variables & Reset
   ========================================================================== */

:root {
    /* Colors - Deep teal/cyan palette with warm accents */
    --color-primary: #0d7377;
    --color-primary-light: #14a3a8;
    --color-primary-dark: #095456;
    --color-accent: #ff6b35;
    --color-accent-light: #ff8a5c;
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #f8fafa;
    --color-gray-100: #f0f4f4;
    --color-gray-200: #e2e8e8;
    --color-gray-300: #c4d0d0;
    --color-gray-400: #94a3a3;
    --color-gray-500: #64747b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Semantic */
    --color-success: #10b981;
    --color-error: #ef4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    --gradient-hero: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    --gradient-text: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    
    /* Typography */
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Font sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: var(--space-6);
    
    /* Header */
    --header-height: 80px;
}

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

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

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

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

ul {
    list-style: none;
}

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

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

input,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

.section-label {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
    max-width: 600px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header .section-description {
    margin: 0 auto;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md), 0 0 0 0 rgba(13, 115, 119, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 0 4px rgba(13, 115, 119, 0.15);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-200);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

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

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    filter: grayscale(0.2);
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.logo svg {
    width: 120px;
    height: auto;
    display: block;
}

.header .logo svg path:not(.logo__color) {
    fill: var(--color-gray-900);
}

.header .logo svg {
    width: 71px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-weight: 500;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

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

.nav-link--cta {
    padding: var(--space-2) var(--space-5);
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-lg);
}

.nav-link--cta:hover {
    color: var(--color-white);
    opacity: 0.9;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    cursor: pointer;
}

.hamburger {
    position: relative;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    padding-top: calc(var(--header-height) + var(--space-16));
    padding-bottom: var(--space-20);
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-6);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
    max-width: 540px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.hero-stats {
    display: flex;
    gap: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
}

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

.stat-value {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.hero-visual {
    display: none;
}

.hero-graphic {
    position: relative;
    width: 100%;
    height: 400px;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    z-index: 8;
    animation: float 6s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    left: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 35%;
    right: 10%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 20%;
    left: 15%;
    animation-delay: 2s;
}

.card-icon {
    font-size: var(--text-2xl);
}

.card-text {
    font-weight: 600;
    color: var(--color-gray-700);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.code-block {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    background: var(--color-gray-900);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.code-header {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-800);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca40; }

.code-content {
    padding: var(--space-4);
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: var(--text-sm);
    line-height: 1.8;
}

.code-content code {
    color: var(--color-gray-300);
}

.code-keyword { color: #c792ea; }
.code-class { color: #ffcb6b; }
.code-method { color: #82aaff; }
.code-string { color: #c3e88d; }

/* ==========================================================================
   About Section
   ========================================================================== */

.about {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.about-content {
    max-width: 700px;
}

.about-text {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
}

.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.feature-icon {
    font-size: var(--text-2xl);
}

.feature-text {
    font-weight: 500;
    color: var(--color-gray-700);
}

/* ==========================================================================
   Services Section
   ========================================================================== */

.services {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.service-card {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

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

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    color: var(--color-primary);
    margin-bottom: var(--space-6);
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.service-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.service-description {
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.service-list li {
    position: relative;
    padding-left: var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ==========================================================================
   Why Us Section
   ========================================================================== */

.why-us {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.why-us-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.why-card {
    padding: var(--space-6);
    border-left: 3px solid var(--color-gray-200);
    transition: border-color var(--transition-base);
}

.why-card:hover {
    border-color: var(--color-primary);
}

.why-number {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.why-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.why-text {
    font-size: var(--text-base);
    color: var(--color-gray-600);
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */

.pricing {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.pricing-card {
    position: relative;
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    border: 2px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

.pricing-card:hover {
    border-color: var(--color-gray-200);
    box-shadow: var(--shadow-lg);
}

.pricing-card--popular {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl);
}

.pricing-card--popular:hover {
    border-color: var(--color-primary);
}

.popular-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: var(--space-1) var(--space-4);
    background: var(--gradient-primary);
    color: var(--color-white);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-gray-100);
}

.pricing-name {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.pricing-description {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--space-4);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-1);
}

.price-amount {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-gray-900);
}

.price-period {
    font-size: var(--text-base);
    color: var(--color-gray-500);
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--text-base);
    color: var(--color-gray-600);
}

.check-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-success);
}

.pricing-note {
    text-align: center;
    color: var(--color-gray-500);
}

.pricing-note a {
    color: var(--color-primary);
    font-weight: 500;
}

.pricing-note a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Audience Section
   ========================================================================== */

.audience {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.audience-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.audience-description {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
}

.audience-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.audience-item {
    display: flex;
    gap: var(--space-4);
}

.audience-icon {
    flex-shrink: 0;
    font-size: var(--text-2xl);
}

.audience-item h4 {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.audience-item p {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.audience-visual {
    display: none;
}

.quote-card {
    background: var(--gradient-primary);
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    color: var(--color-white);
}

.quote-card blockquote {
    font-size: var(--text-xl);
    font-weight: 500;
    line-height: 1.6;
    font-style: italic;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
    padding: var(--space-20) 0;
    background: var(--color-gray-900);
    color: var(--color-white);
}

.contact .section-label {
    color: var(--color-primary-light);
}

.contact .section-title {
    color: var(--color-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
}

.contact-description {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    margin-bottom: var(--space-8);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

.contact-method:hover {
    color: var(--color-primary-light);
}

.contact-method-icon {
    font-size: var(--text-xl);
}

.contact-telegram {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    padding: var(--space-5);
    background: var(--color-gray-800);
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius-xl);
    color: var(--color-gray-300);
    text-decoration: none;
    transition: border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-telegram:hover {
    border-color: var(--color-primary);
    color: var(--color-gray-200);
    box-shadow: 0 0 0 1px rgba(20, 163, 168, 0.2);
}

.contact-telegram__photo {
    width: 5.5rem;
    height: 5.5rem;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid var(--color-gray-600);
}

.contact-telegram__body {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    align-items: flex-start;
    text-align: left;
}

.contact-telegram__name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--text-lg);
    color: var(--color-white);
}

.contact-telegram__role {
    font-size: var(--text-base);
    color: var(--color-gray-400);
    line-height: 1.35;
}

.contact-telegram__handle {
    margin-top: var(--space-1);
    font-size: var(--text-sm);
    color: var(--color-primary-light);
}

.contact-form {
    background: var(--color-gray-800);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-300);
    margin-bottom: var(--space-2);
}

.optional {
    color: var(--color-gray-500);
    font-weight: 400;
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-700);
    border: 2px solid var(--color-gray-600);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
    color: var(--color-gray-500);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.2);
}

.form-input.error {
    border-color: var(--color-error);
}

.form-group.has-error .form-input {
    border-color: var(--color-error);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.15);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    display: none;
    font-size: var(--text-sm);
    color: var(--color-error);
    margin-top: var(--space-2);
}

.form-group.has-error .form-error {
    display: block;
}

.form-privacy {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    text-align: center;
    margin-top: var(--space-4);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--color-gray-900);
    border-top: 1px solid var(--color-gray-800);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-10);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-top: var(--space-3);
}

.logo__color {
    -webkit-animation: color 7s infinite;
    animation: color 7s infinite;
}

@-webkit-keyframes color {
    from {
        fill: #3791ff;
    }
    25% {
        fill: #9d69f6;
    }
    50% {
        fill: #83c867;
    }
    75% {
        fill: #f2b546;
    }
    to {
        fill: #3791ff;
    }
}

@keyframes color {
    from {
        fill: #3791ff;
    }
    25% {
        fill: #9d69f6;
    }
    50% {
        fill: #83c867;
    }
    75% {
        fill: #f2b546;
    }
    to {
        fill: #3791ff;
    }
}

.color {
    -webkit-animation-name: color;
    animation-name: color;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.footer-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-column a {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.copyright,
.footer-location {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.footer-bottom a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.footer-bottom a:hover {
    color: var(--color-primary-light);
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* ==========================================================================
   Media Queries - Tablet
   ========================================================================== */

@media (min-width: 768px) {
    :root {
        --container-padding: var(--space-8);
    }
    
    .section-title {
        font-size: var(--text-4xl);
    }
    
    .hero-title {
        font-size: var(--text-5xl);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .why-us-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        align-items: start;
    }
    
    .audience-visual {
        display: block;
    }
    
    .audience-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr auto;
    }
    
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* Планшет: три тарифа — два в ряд, третий в отдельной строке по центру, без растягивания на всю ширину */
@media (min-width: 768px) and (max-width: 1023px) {
    .pricing-grid > .pricing-card:last-child {
        grid-column: 1 / -1;
        width: 100%;
        max-width: 28rem;
        justify-self: center;
    }
}

/* ==========================================================================
   Media Queries - Desktop
   ========================================================================== */

@media (min-width: 1024px) {
    .section-title {
        font-size: var(--text-5xl);
    }
    
    .hero {
        padding-top: calc(var(--header-height) + var(--space-20));
        padding-bottom: var(--space-24);
    }
    
    .hero .container {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-title {
        font-size: var(--text-6xl);
    }
    
    .hero-visual {
        display: block;
    }
    
    .nav-toggle {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .service-card {
        padding: var(--space-6);
    }
    
    .why-us-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid > .pricing-card:last-child {
        grid-column: auto;
    }
    
    .pricing-card--popular {
        grid-column: auto;
        max-width: none;
        transform: scale(1.05);
    }
}

/* ==========================================================================
   Media Queries - Mobile Navigation
   ========================================================================== */

@media (max-width: 767px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        gap: 0;
        padding: var(--space-8);
        background: var(--color-white);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-link {
        display: block;
        padding: var(--space-4);
        font-size: var(--text-lg);
        border-bottom: 1px solid var(--color-gray-100);
    }
    
    .nav-link--cta {
        margin-top: var(--space-4);
        border-bottom: none;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: var(--space-6);
    }
    
    .stat {
        min-width: 80px;
    }
}

/* ==========================================================================
   Problems Section (index.html)
   ========================================================================== */

.problems {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.problems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.problem-card {
    padding: var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

.problem-card:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.problem-icon {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.problem-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.problem-text {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.problems-cta {
    text-align: center;
    margin-top: var(--space-10);
    font-size: var(--text-lg);
    color: var(--color-gray-600);
}

.problems-cta a {
    color: var(--color-primary);
    font-weight: 600;
}

.problems-cta a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Hero Badge (agencies.html)
   ========================================================================== */

.hero-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(13, 115, 119, 0.1);
    color: var(--color-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

/* ==========================================================================
   Value Proposition Section (agencies.html)
   ========================================================================== */

.value-prop {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.value-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.value-description {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
}

.value-points {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.value-point {
    display: flex;
    gap: var(--space-4);
}

.value-icon {
    flex-shrink: 0;
    font-size: var(--text-xl);
}

.value-point-content strong {
    display: block;
    font-size: var(--text-base);
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
}

.value-point-content p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.value-visual {
    display: none;
}

/* ==========================================================================
   Workflow Section (agencies.html)
   ========================================================================== */

.how-we-work {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.workflow-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.workflow-card {
    padding: var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-100);
}

.workflow-number {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.workflow-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
}

.workflow-text {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    margin-bottom: var(--space-4);
}

.workflow-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-gray-600);
}

/* ==========================================================================
   Technologies Section (agencies.html)
   ========================================================================== */

.tech {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

.tech-category {
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-100);
}

.tech-category-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
    color: var(--color-gray-900);
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tech-item {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.tech-item:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.tech-note {
    margin-top: var(--space-8);
    padding: var(--space-6);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--color-primary);
}

.tech-note p {
    font-size: var(--text-base);
    color: var(--color-gray-600);
}

.tech-note strong {
    color: var(--color-gray-900);
}

/* ==========================================================================
   Tasks Section (agencies.html)
   ========================================================================== */

.tasks {
    padding: var(--space-20) 0;
    background: var(--color-white);
}

.tasks-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.task-card {
    padding: var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

.task-card:hover {
    border-color: var(--color-primary-light);
}

.task-icon {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.task-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.task-list li {
    position: relative;
    padding-left: var(--space-5);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.task-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* ==========================================================================
   Pricing Simple (agencies.html)
   ========================================================================== */

.pricing--agencies .pricing-simple {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: 900px;
    margin: 0 auto;
}

.pricing-main {
    background: var(--color-white);
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    text-align: center;
    border: 2px solid var(--color-primary);
}

.pricing-range {
    display: flex;
    align-items: baseline;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.price-from,
.price-to {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.price-separator {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
}

.price-unit {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
}

.pricing-note-text {
    font-size: var(--text-base);
    color: var(--color-gray-600);
}

.pricing-details {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.pricing-detail {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-100);
}

.detail-icon {
    flex-shrink: 0;
    font-size: var(--text-2xl);
}

.detail-content strong {
    display: block;
    font-size: var(--text-base);
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
}

.detail-content p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.pricing-cta {
    text-align: center;
    margin-top: var(--space-10);
}

.btn-lg {
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-lg);
}

/* ==========================================================================
   Form Select
   ========================================================================== */

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3a3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    background-size: 20px;
    padding-right: var(--space-10);
    cursor: pointer;
}

.form-select option {
    background: var(--color-gray-700);
    color: var(--color-white);
}

/* ==========================================================================
   Form Checkbox
   ========================================================================== */

.form-group--checkbox {
    margin-bottom: var(--space-6);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
    user-select: none;
}

.checkbox-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    background: var(--color-gray-700);
    border: 2px solid var(--color-gray-500);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
    margin-top: 2px;
}

.checkbox-custom::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 7px;
    width: 5px;
    height: 10px;
    border: solid var(--color-white);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--transition-fast);
}

.checkbox-input:checked + .checkbox-custom {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-input:checked + .checkbox-custom::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-input:focus + .checkbox-custom {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.2);
}

.checkbox-input.error + .checkbox-custom {
    border-color: var(--color-error);
}

.checkbox-text {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    line-height: 1.5;
}

.checkbox-text a {
    color: var(--color-primary-light);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.checkbox-text a:hover {
    color: var(--color-white);
}

.form-group--checkbox .form-error {
    margin-left: calc(22px + var(--space-3));
}

/* ==========================================================================
   Notifications
   ========================================================================== */

.notification {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    max-width: 400px;
    padding: var(--space-4) var(--space-12) var(--space-4) var(--space-5);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    font-family: var(--font-body);
    color: var(--color-white);
    opacity: 0;
    visibility: hidden;
    transform: translateX(100%);
    transition: none;
}

.notification.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    animation: notificationSlideIn 0.3s ease forwards;
}

.notification.is-hiding {
    animation: notificationSlideOut 0.3s ease forwards;
}

.notification--success {
    background: var(--color-success);
}

.notification--error {
    background: var(--color-error);
}

.notification-message {
    display: block;
    line-height: 1.4;
}

.notification-close {
    position: absolute;
    top: 50%;
    right: var(--space-3);
    transform: translateY(-50%);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-2xl);
    cursor: pointer;
    line-height: 1;
    padding: var(--space-1);
    transition: color var(--transition-fast);
}

.notification-close:hover {
    color: var(--color-white);
}

@keyframes notificationSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes notificationSlideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Mobile notification */
@media (max-width: 480px) {
    .notification {
        left: var(--space-4);
        right: var(--space-4);
        max-width: none;
    }
}

/* ==========================================================================
   Additional Media Queries for New Sections
   ========================================================================== */

@media (min-width: 768px) {
    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .value-visual {
        display: block;
    }
    
    .value-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .workflow-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tasks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing--agencies .pricing-simple {
        grid-template-columns: 1fr 1fr;
    }
    
    .pricing-details {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1024px) {
    .problems-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .workflow-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tasks-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-details {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-card {
        animation: none;
    }
}