/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Якорные секции - отступ сверху для видимости заголовков */
section[id] {
    scroll-margin-top: 100px;
}

:root {
    /* Color palette */
    --primary-amber: #FFB703;
    --secondary-sapphire: #023047;
    --background-sand: #FEF6E4;
    --accent-coral: #FB8500;
    --accent-mint: #8ECAE6;
    
    /* Typography */
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-weight-normal: 400;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* Shadows */
    --shadow-light: 0 2px 8px rgba(2, 48, 71, 0.1);
    --shadow-medium: 0 4px 16px rgba(2, 48, 71, 0.15);
    --shadow-heavy: 0 8px 32px rgba(2, 48, 71, 0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--secondary-sapphire);
    background-color: #ffffff;
    overflow-x: hidden;
    max-width: 100vw;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

p {
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1rem, 2vw, 1.125rem);
}

/* Container and layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    box-sizing: border-box;
    width: 100%;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--spacing-sm) * -1);
}

.col {
    flex: 1;
    padding: 0 var(--spacing-sm);
}

.col-12 { flex: 0 0 100%; }
.col-6 { flex: 0 0 50%; }
.col-4 { flex: 0 0 33.333%; }
.col-3 { flex: 0 0 25%; }

/* Responsive images */
.img-responsive {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.img-responsive:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-amber) 0%, var(--accent-coral) 100%);
    color: white;
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-medium);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    height: 60px;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.nav {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav a {
    color: white;
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.nav a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, var(--background-sand) 0%, var(--accent-mint) 100%);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" patternUnits="userSpaceOnUse" width="100" height="100"><circle cx="25" cy="25" r="1" fill="%23023047" fill-opacity="0.03"/><circle cx="75" cy="75" r="1" fill="%23023047" fill-opacity="0.03"/><circle cx="25" cy="75" r="1" fill="%23023047" fill-opacity="0.03"/><circle cx="75" cy="25" r="1" fill="%23023047" fill-opacity="0.03"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--secondary-sapphire);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: clamp(1.125rem, 2.5vw, 1.25rem);
    color: var(--secondary-sapphire);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all var(--transition-medium);
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-coral) 0%, var(--primary-amber) 100%);
    color: white;
    box-shadow: var(--shadow-medium);
}

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

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

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

/* Sections */
.section {
    padding: var(--spacing-xxl) 0;
}

.section-alt {
    background-color: var(--background-sand);
}

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

.section-header h2 {
    color: var(--secondary-sapphire);
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    color: var(--secondary-sapphire);
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-amber) 0%, var(--accent-coral) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.card h3 {
    text-align: center;
    color: var(--secondary-sapphire);
    margin-bottom: var(--spacing-sm);
}

.card p {
    flex-grow: 1;
    text-align: center;
    color: var(--secondary-sapphire);
    opacity: 0.8;
}

/* Services grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

/* Advantages */
.advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-medium);
}

.advantage-item:hover {
    transform: translateX(8px);
}

.advantage-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-mint) 0%, var(--primary-amber) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-sapphire);
    font-weight: bold;
    flex-shrink: 0;
}

/* Testimonials */
.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border-left: 4px solid var(--primary-amber);
    transition: transform var(--transition-medium);
}

.testimonial:hover {
    transform: scale(1.02);
}

.testimonial-text {
    font-style: italic;
    margin-bottom: var(--spacing-md);
    color: var(--secondary-sapphire);
}

.testimonial-author {
    font-weight: var(--font-weight-bold);
    color: var(--accent-coral);
}

/* FAQ - Pure CSS implementation */
.faq-item {
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-light);
    overflow: hidden;
}

.faq-item details {
    border: none;
}

.faq-item summary {
    padding: var(--spacing-md);
    background: var(--background-sand);
    cursor: pointer;
    font-weight: var(--font-weight-bold);
    color: var(--secondary-sapphire);
    list-style: none;
    transition: background-color var(--transition-fast);
    position: relative;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.faq-item details[open] summary::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-item summary:hover {
    background: var(--accent-mint);
}

.faq-answer {
    padding: var(--spacing-md);
    color: var(--secondary-sapphire);
    opacity: 0.8;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 0.8; transform: translateY(0); }
}

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

@keyframes slideInLeft {
    from { 
        opacity: 0; 
        transform: translateX(-30px); 
    }
    to { 
        opacity: 1; 
        transform: translateX(0); 
    }
}

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

/* Animate elements on scroll with CSS only */
.card, .advantage-item, .testimonial {
    animation: fadeInUp 0.6s ease-out forwards;
}

.card:nth-child(odd) {
    animation: slideInLeft 0.6s ease-out forwards;
}

.card:nth-child(even) {
    animation: slideInRight 0.6s ease-out forwards;
}

.advantage-item:nth-child(1) { animation-delay: 0.1s; }
.advantage-item:nth-child(2) { animation-delay: 0.2s; }
.advantage-item:nth-child(3) { animation-delay: 0.3s; }
.advantage-item:nth-child(4) { animation-delay: 0.4s; }

.testimonial:nth-child(1) { animation-delay: 0.1s; }
.testimonial:nth-child(2) { animation-delay: 0.3s; }
.testimonial:nth-child(3) { animation-delay: 0.5s; }

/* Hero elements animation */
.hero h1 {
    animation: fadeInUp 0.8s ease-out;
    animation-delay: 0.2s;
    animation-fill-mode: both;
}

.hero p {
    animation: fadeInUp 0.8s ease-out;
    animation-delay: 0.4s;
    animation-fill-mode: both;
}

.hero .btn {
    animation: fadeInUp 0.8s ease-out;
    animation-delay: 0.6s;
    animation-fill-mode: both;
}

/* Forms */
.form-section {
    background: linear-gradient(135deg, var(--secondary-sapphire) 0%, var(--accent-coral) 100%);
    color: white;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-heavy);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-bold);
    color: var(--secondary-sapphire);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-amber);
    box-shadow: 0 0 0 3px rgba(255, 183, 3, 0.1);
}

.form-control.error {
    border-color: #dc3545;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.checkbox-group input[type="checkbox"] {
    margin-top: 4px;
}

.checkbox-group label {
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Footer */
.footer {
    background: var(--secondary-sapphire);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--primary-amber);
    margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    line-height: 1.6;
}

.footer-section a:hover {
    color: var(--primary-amber);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Contact info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--background-sand);
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast);
}

.contact-item:hover {
    transform: translateX(4px);
}

.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-amber) 0%, var(--accent-coral) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Cookie banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--secondary-sapphire);
    color: white;
    padding: var(--spacing-md);
    z-index: 10000;
    transform: translateY(100%);
    transition: transform var(--transition-medium), opacity var(--transition-medium);
    opacity: 0;
}

.cookie-banner.show {
    transform: translateY(0);
    opacity: 1;
}

.cookie-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.cookie-text {
    flex: 1;
    min-width: 250px;
}

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.animate-bounce {
    animation: bounce 2s infinite;
}

/* Utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

/* Responsive design */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .col-6,
    .col-4,
    .col-3 {
        flex: 0 0 100%;
        padding: 0 var(--spacing-sm);
    }
    
    .row {
        margin: 0;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .advantages {
        grid-template-columns: 1fr;
    }
    
    .testimonials {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-item {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.5rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-xxl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
        max-width: 100%;
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .form-container {
        padding: var(--spacing-md);
        margin: 0 var(--spacing-sm);
    }
    
    .col-6[style*="padding-right"],
    .col-6[style*="padding-left"] {
        padding-left: 0 !important;
        padding-right: 0 !important;
        margin-bottom: 2rem;
    }
    
    .header .container > div {
        flex-direction: column !important;
        text-align: center;
    }
    
    .header h1 {
        font-size: 1.5rem !important;
    }
    
    iframe {
        width: 100% !important;
        max-width: 100% !important;
    }
    
    * {
        max-width: 100%;
        overflow-x: hidden;
    }
}

@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
}

/* Print styles */
@media print {
    .header,
    .cookie-banner,
    .form-section {
        display: none;
    }
    
    body {
        color: black;
        background: white;
    }
    
    .section {
        padding: 1rem 0;
    }
}