/* ===== ПЕРЕМЕННЫЕ CSS ===== */
:root {
    --primary-bg: #0D1B2A;
    --accent-bg: #3A506B;
    --contrast-color: #F4D35E;
    --text-white: #FFFFFF;
    --text-light: #C9D6DF;
    --form-bg: #1B263B;
    --ui-elements: #A9BCD0;
    --shadow-dark: rgba(0, 0, 0, 0.3);
    --shadow-light: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s ease;
}

/* ===== СБРОС И БАЗОВЫЕ СТИЛИ ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: clamp(14px, 2vw, 16px);
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-white);
    background-color: var(--primary-bg);
    overflow-x: hidden;
    max-width: 100%;
    width: 100%;
}

/* ===== ТИПОГРАФИКА ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-white);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    background: linear-gradient(135deg, var(--contrast-color), var(--text-white));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--contrast-color);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--ui-elements);
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: clamp(1rem, 2vw, 1.1rem);
}

/* ===== КОНТЕЙНЕРЫ ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    width: 100%;
    box-sizing: border-box;
}

.section {
    padding: 4rem 0;
    position: relative;
}

.section:nth-child(even) {
    background-color: var(--accent-bg);
}

/* ===== ЗАГОЛОВОК ===== */
.header {
    background: linear-gradient(135deg, var(--primary-bg), var(--accent-bg));
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px var(--shadow-dark);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--contrast-color);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo svg {
    width: 40px;
    height: 40px;
    margin-right: 0.5rem;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.nav a:hover {
    color: var(--contrast-color);
    transform: translateY(-2px);
}

/* ===== КНОПКИ ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--contrast-color), #FFD700);
    color: var(--primary-bg);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(244, 211, 94, 0.3);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(244, 211, 94, 0.5);
}

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

.btn-secondary:hover {
    background: var(--contrast-color);
    color: var(--primary-bg);
}

/* ===== ГЕРОЙ СЕКЦИЯ ===== */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-bg), var(--accent-bg));
    position: relative;
    overflow: hidden;
    padding: 2rem 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23A9BCD0" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-text {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    margin-bottom: 2rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== КАРТОЧКИ ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--form-bg);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px var(--shadow-dark);
    transition: var(--transition);
    position: relative;
    overflow: visible;
    height: auto;
    min-height: 200px;
    display: flex;
    flex-direction: column;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--contrast-color), var(--ui-elements));
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px var(--shadow-dark);
}

.card-title {
    color: var(--contrast-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.card-price span {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 400;
}

/* ===== ФОРМЫ ===== */
.form-section {
    background: var(--accent-bg);
    padding: 4rem 0;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--form-bg);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px var(--shadow-dark);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--ui-elements);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: #bb4848;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--contrast-color);
    box-shadow: 0 0 0 3px rgba(244, 211, 94, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.checkbox-group label {
    margin-bottom: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* ===== ОТЗЫВЫ ===== */
.testimonials {
    padding: 4rem 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.testimonial {
    background: var(--form-bg);
    padding: 2rem;
    border-radius: 15px;
    position: relative;
    box-shadow: 0 8px 25px var(--shadow-dark);
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 4rem;
    color: var(--contrast-color);
    opacity: 0.3;
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.testimonial-author {
    font-weight: 600;
    color: var(--contrast-color);
}

/* ===== FAQ ===== */
.faq-container {
    max-width: 800px;
    margin: 2rem auto 0;
}

.faq-item {
    background: var(--form-bg);
    margin-bottom: 1rem;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 15px var(--shadow-dark);
}

.faq-checkbox {
    display: none;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.5rem;
    background: var(--accent-bg);
    color: var(--text-white);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: left;
    margin: 0;
}

.faq-question:hover {
    background: var(--ui-elements);
    color: var(--primary-bg);
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-answer-content {
    padding: 1.5rem;
    color: var(--text-light);
    line-height: 1.6;
}

.faq-answer-content p {
    margin: 0;
}

/* Стили для открытого FAQ */
.faq-checkbox:checked + .faq-question .faq-icon {
    transform: rotate(45deg);
}

.faq-checkbox:checked + .faq-question {
    background: var(--contrast-color);
    color: var(--primary-bg);
}

.faq-checkbox:checked ~ .faq-answer {
    max-height: 300px;
}

/* ===== ФУТЕР ===== */
.footer {
    background: var(--primary-bg);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--accent-bg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--contrast-color);
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--accent-bg);
    color: var(--text-light);
}

/* ===== COOKIE БАННЕР ===== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--form-bg);
    padding: 1rem;
    box-shadow: 0 -4px 20px var(--shadow-dark);
    z-index: 10000;
    transform: translateY(100%);
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

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

.cookie-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    gap: 1rem;
}

.cookie-text {
    flex: 1;
    color: var(--text-light);
    font-size: 0.9rem;
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
}

.cookie-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.cookie-accept {
    background: var(--contrast-color);
    color: var(--primary-bg);
}

.cookie-decline {
    background: transparent;
    color: var(--text-light);
    border: 1px solid var(--text-light);
}

.cookie-accept:hover {
    background: #FFD700;
}

.cookie-decline:hover {
    background: var(--text-light);
    color: var(--primary-bg);
}

/* ===== АДАПТИВНОСТЬ ===== */
@media (max-width: 768px) {
    * {
        max-width: 100%;
        box-sizing: border-box;
    }
    
    html, body {
        overflow-x: hidden;
        width: 100%;
        max-width: 100%;
    }
    
    .container {
        padding: 0 0.5rem;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .hero-content {
        max-width: 100%;
        text-align: left !important;
    }
    
    .hero-content div[style*="justify-content: flex-start"] {
        justify-content: flex-start !important;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-buttons {
        justify-content: center;
    }
    
    /* Images responsives sur mobile */
    .hero div[style*="grid-template-columns"],
    #about div[style*="grid-template-columns"],
    .testimonials div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }
    
    /* Contact form responsive */
    #contact div[style*="1fr 2fr"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }
    
    #contact div[style*="1fr 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }
    
    /* Approche section responsive */
    .section div[style*="repeat(4, 1fr)"] {
        grid-template-columns: 1fr !important;
        gap: 1.5rem !important;
    }
    
    .hero-image img,
    #about img,
    .testimonials img,
    #contact img {
        max-width: 300px !important;
        width: 100%;
        height: auto;
    }
    
    /* Предотвращение горизонтальной прокрутки */
    .hero div,
    .section div,
    .card,
    .form-container {
        max-width: 100%;
        overflow-x: hidden;
        box-sizing: border-box;
    }
    
    /* Responsive grid для всех сеток */
    [style*="grid-template-columns"],
    [style*="display: grid"] {
        grid-template-columns: 1fr !important;
        overflow-x: hidden;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .form-container {
        padding: 1.5rem;
        margin: 0 0.5rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}

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

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

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

.animate-slideIn {
    animation: slideIn 0.6s ease-out;
}

/* ===== УЛУЧШЕНИЯ ДОСТУПНОСТИ ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== СКРЫТИЕ ЭЛЕМЕНТОВ ===== */
.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;
}