/* ========================================
   ESVIEM Consulting - Main Stylesheet
   Version: 2.0
   ======================================== */

/* ----------------------------------------
   CSS Variables
   ---------------------------------------- */
:root {
    /* Colors */
    --primary: #0066cc;
    --primary-dark: #0052a3;
    --primary-light: #3399ff;
    --secondary: #00a8e8;
    --accent: #fdb71a;
    --accent-dark: #e5a617;
    
    /* Dark Theme */
    --dark-bg: #0a1628;
    --dark-bg-light: #0f2140;
    --dark-bg-lighter: #162d50;
    
    /* Light Theme */
    --light-bg: #f5f7fa;
    --light-bg-alt: #eef2f7;
    --white: #ffffff;
    
    /* Text */
    --text-dark: #1a2b4a;
    --text-medium: #4a5568;
    --text-light: #718096;
    --text-white: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.7);
    
    /* Borders & Shadows */
    --border-color: #e2e8f0;
    --border-light: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-main: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    
    /* 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;
    
    /* Layout */
    --container-max: 1200px;
    --header-height: 80px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

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

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

/* ----------------------------------------
   Layout
   ---------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

/* ----------------------------------------
   Header
   ---------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: var(--shadow-lg);
}

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

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--white);
    letter-spacing: 2px;
}

.logo-sub {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 3px;
}

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

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-muted);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

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

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

.lang-switch {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.lang-switch:hover {
    color: var(--white);
    border-color: var(--accent);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--white);
    transition: all var(--transition-fast);
}

.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);
}

/* ----------------------------------------
   Buttons
   ---------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-md {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: var(--dark-bg);
    box-shadow: 0 4px 15px rgba(253, 183, 26, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(253, 183, 26, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    font-size: 1.2em;
}

/* ----------------------------------------
   Hero Section
   ---------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-light) 50%, var(--dark-bg-lighter) 100%);
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(0, 102, 204, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(253, 183, 26, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0, 168, 232, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: var(--spacing-3xl) 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(253, 183, 26, 0.1);
    border: 1px solid rgba(253, 183, 26, 0.3);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--accent);
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, var(--font-size-5xl));
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
}

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

.hero-stats {
    display: flex;
    gap: var(--spacing-3xl);
}

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

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--accent);
}

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

/* ----------------------------------------
   Section Styles
   ---------------------------------------- */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-badge {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary);
    background: rgba(0, 102, 204, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, var(--font-size-4xl));
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-medium);
}

/* ----------------------------------------
   About Section
   ---------------------------------------- */
.about {
    background: var(--light-bg);
}

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

.about-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.about-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.about-card p {
    color: var(--text-medium);
    line-height: 1.7;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-md);
}

.feature-check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: var(--font-size-sm);
}

/* ----------------------------------------
   Services Section
   ---------------------------------------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.service-card {
    display: block;
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.service-desc {
    color: var(--text-medium);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.service-features {
    margin-bottom: var(--spacing-lg);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-medium);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
}

.service-features li::before {
    content: '•';
    color: var(--primary);
    font-weight: bold;
}

.service-link {
    display: inline-block;
    font-weight: 600;
    color: var(--primary);
    transition: all var(--transition-fast);
}

.service-card:hover .service-link {
    color: var(--primary-dark);
    transform: translateX(5px);
}

/* ----------------------------------------
   AI Solutions Section
   ---------------------------------------- */
.ai-solutions {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-light) 100%);
}

.ai-solutions .section-badge {
    background: rgba(253, 183, 26, 0.1);
    color: var(--accent);
}

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

.ai-solutions .section-subtitle {
    color: var(--text-muted);
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.ai-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.ai-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.ai-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.ai-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.ai-card p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

/* ----------------------------------------
   Contacts Section
   ---------------------------------------- */
.contacts {
    background: var(--light-bg);
}

.contacts-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

.contacts-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    font-size: 1.5rem;
}

.contact-content h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

.contact-content a,
.contact-content span {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--text-dark);
}

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

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

.messenger-btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--white);
    transition: transform var(--transition-fast);
}

.messenger-btn:hover {
    transform: scale(1.05);
}

.messenger-btn.telegram {
    background: #0088cc;
}

.messenger-btn.whatsapp {
    background: #25D366;
}

/* Contact Form */
.contacts-form {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.form-checkbox input {
    width: auto;
    margin-top: 4px;
}

.form-checkbox label {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
    color: var(--text-medium);
}

.form-checkbox a {
    color: var(--primary);
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.footer {
    background: var(--dark-bg);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: var(--spacing-md);
    max-width: 300px;
}

.footer-links h4,
.footer-contacts h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

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

.footer-links a {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-contacts p,
.footer-contacts a {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-contacts a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-light);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.footer-lang {
    display: flex;
    gap: var(--spacing-md);
}

.footer-lang a {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.footer-lang a.active,
.footer-lang a:hover {
    color: var(--accent);
}

/* ----------------------------------------
   Service Page Styles
   ---------------------------------------- */
.service-page-hero {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-light) 100%);
    padding: calc(var(--header-height) + var(--spacing-4xl)) 0 var(--spacing-4xl);
}

.service-page-hero .hero-content {
    padding: 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
}

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

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

.breadcrumb span {
    color: var(--accent);
}

.service-page-content {
    padding: var(--spacing-4xl) 0;
}

.service-page-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
}

.service-main h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-dark);
    margin: var(--spacing-2xl) 0 var(--spacing-lg);
}

.service-main h2:first-child {
    margin-top: 0;
}

.service-main p {
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.service-main ul {
    margin-bottom: var(--spacing-xl);
}

.service-main ul li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    color: var(--text-medium);
    border-bottom: 1px solid var(--border-color);
}

.service-main ul li:last-child {
    border-bottom: none;
}

.service-main ul li::before {
    content: '✓';
    color: var(--primary);
    font-weight: bold;
}

/* Service Sidebar */
.service-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-xl));
}

.sidebar-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.sidebar-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary);
}

.sidebar-services {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-services a {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-medium);
    transition: all var(--transition-fast);
}

.sidebar-services a:hover,
.sidebar-services a.active {
    background: var(--light-bg);
    color: var(--primary);
}

.sidebar-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    text-align: center;
}

.sidebar-cta h3 {
    color: var(--white);
    border-bottom-color: rgba(255, 255, 255, 0.3);
}

.sidebar-cta p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

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

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--dark-bg);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .btn-consultation {
        display: none;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .ai-grid {
        grid-template-columns: 1fr;
    }
    
    .contacts-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-brand p {
        max-width: none;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
        align-items: flex-start;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .service-page-grid {
        grid-template-columns: 1fr;
    }
    
    .service-sidebar {
        position: static;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
    animation: fadeIn 0.4s ease forwards;
}

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

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

/* ----------------------------------------
   Utility Classes
   ---------------------------------------- */
.text-center {
    text-align: center;
}

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

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mt-3 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

.hidden {
    display: none !important;
}

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