/* ===== ГЛОБАЛЬНЫЕ СТИЛИ ===== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Основные цвета - обновлены под стиль слайдов */
    --color-primary: #1E40AF; /* Насыщенный синий из слайдов */
    --color-primary-dark: #1E3A8A; /* Тёмный синий */
    --color-secondary: #F59E0B; /* Золотисто-жёлтый акцент */
    --color-accent: #FBBF24; /* Светлый золотой */
    --color-white: #FFFFFF;
    --color-light-bg: #F8FAFC;
    --color-text-dark: #1E293B;
    --color-text-gray: #64748B;
    --color-border: #E2E8F0;

    /* Типографика */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Отступы */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;

    /* Тени */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);

    /* Переходы */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text-dark);
    background-color: var(--color-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== ТИПОГРАФИКА ===== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

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

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

/* ===== НАВИГАЦИЯ ===== */

.navbar {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

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

.nav-menu li a {
    color: var(--color-text-dark);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: var(--transition);
}

.nav-menu li a:hover {
    background-color: var(--color-light-bg);
    color: var(--color-primary);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

/* ===== КНОПКИ ===== */

.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: #B8964E;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-large {
    padding: 16px 48px;
    font-size: 1.125rem;
}

/* ===== СЕКЦИИ ===== */

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

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

/* ===== ПЕРВЫЙ ЭКРАН (HERO) ===== */

.hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-logo {
    height: 140px;
    width: auto;
    margin-bottom: var(--spacing-md);
    /* Убрали фильтр, чтобы показать настоящий логотип */
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    letter-spacing: 4px;
}

.hero-subtitle {
    font-size: 1.5rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.hero-slogan {
    font-size: 1.3rem;
    font-style: normal;
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 0.5px;
}

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

/* ===== О ПРОЕКТЕ ===== */

.about-section {
    background-color: var(--color-white);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.lead-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-light-bg);
    border-left: 4px solid var(--color-secondary);
    border-radius: 4px;
}

.explanation-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-gray);
}

/* ===== ПРОБЛЕМЫ ===== */

.problem-section {
    background-color: var(--color-light-bg);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.problem-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

.problem-card h3 {
    font-size: 1.125rem;
    color: var(--color-text-dark);
}

/* ===== МОДЕЛЬ ===== */

.model-section {
    background-color: var(--color-white);
}

.model-scheme {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    max-width: 1400px;
    margin: 0 auto var(--spacing-lg);
    padding: var(--spacing-md);
}

.scheme-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.scheme-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    box-shadow: var(--shadow-md);
}

.scheme-item p {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-dark);
    max-width: 100px;
}

.scheme-arrow {
    font-size: 1.5rem;
    color: var(--color-secondary);
    font-weight: bold;
    margin: 0 var(--spacing-xs);
}

.model-caption {
    text-align: center;
    font-size: 1.125rem;
    font-style: italic;
    color: var(--color-text-gray);
    max-width: 800px;
    margin: 0 auto;
}

/* ===== ЭЛЕМЕНТЫ СИСТЕМЫ ===== */

.elements-section {
    background-color: var(--color-light-bg);
}

.elements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.element-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    border-top: 4px solid var(--color-secondary);
}

.element-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.element-number {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 40px;
    height: 40px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
}

.element-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.element-card p {
    color: var(--color-text-gray);
    margin-bottom: 0;
}

/* ===== ПИЛОТНЫЙ ПРОЕКТ ===== */

.pilot-section {
    background-color: var(--color-white);
}

.pilot-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.pilot-location,
.pilot-duration {
    background-color: var(--color-light-bg);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
}

.pilot-location h3,
.pilot-duration h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.pilot-detail {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-dark);
}

.pilot-results-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.pilot-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    font-weight: 500;
}

.pilot-achievements {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 600px;
    margin: 0 auto;
}

.achievement-item {
    background-color: var(--color-light-bg);
    padding: var(--spacing-sm);
    border-radius: 4px;
    font-size: 1.125rem;
    color: var(--color-accent);
    font-weight: 600;
}

/* ===== ОТЛИЧИЯ ===== */

.difference-section {
    background-color: var(--color-light-bg);
}

.difference-intro {
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
}

.difference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.difference-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.difference-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.difference-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.difference-card p {
    color: var(--color-text-gray);
    margin-bottom: 0;
}

.difference-card-highlight {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
}

.difference-card-highlight h3,
.difference-card-highlight p {
    color: var(--color-white);
}

/* ===== ДОКУМЕНТЫ ===== */

.documents-section {
    background-color: var(--color-white);
}

.documents-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

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

.doc-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-light-bg);
    border-radius: 8px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.doc-link:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.doc-icon {
    font-size: 2rem;
}

.doc-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.doc-link-highlight {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.doc-link-highlight:hover {
    background-color: #B8964E;
    color: var(--color-white);
}

.qr-code-container {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-light-bg);
    border-radius: 8px;
}

.qr-code {
    width: 200px;
    height: 200px;
    margin-bottom: var(--spacing-sm);
}

.qr-caption {
    font-size: 0.875rem;
    color: var(--color-text-gray);
}

.qr-caption small {
    display: block;
    font-size: 0.75rem;
    color: var(--color-secondary);
    margin-top: var(--spacing-xs);
}

/* ===== ЦЕЛЕВАЯ АУДИТОРИЯ ===== */

.audience-section {
    background-color: var(--color-light-bg);
}

.audience-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-sm);
    max-width: 900px;
    margin: 0 auto;
}

.audience-item {
    background-color: var(--color-white);
    padding: var(--spacing-sm);
    border-radius: 4px;
    font-size: 1.125rem;
    color: var(--color-text-dark);
    box-shadow: var(--shadow-sm);
}

/* ===== ПАРТНЁРСТВО ===== */

.partnership-section {
    background-color: var(--color-white);
}

.partnership-intro {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-gray);
}

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

.support-card {
    background-color: var(--color-light-bg);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
    transition: var(--transition);
}

.support-card:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

.support-card h3 {
    font-size: 1.125rem;
    color: inherit;
}

.partnership-cta {
    text-align: center;
}

/* ===== АВТОР ===== */

.author-section {
    background-color: var(--color-light-bg);
}

.author-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.author-name {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.author-title {
    font-size: 1.25rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.author-details {
    list-style: none;
    padding-left: 0;
}

.author-details li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    font-size: 1.125rem;
    line-height: 1.6;
}

.author-details li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: bold;
}

/* ===== КОНТАКТЫ ===== */

.contacts-section {
    background-color: var(--color-white);
}

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

.contact-info h3,
.contact-form-wrapper h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

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

.contact-details {
    display: flex;
    flex-direction: column;
}

.contact-details strong {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-details a {
    font-size: 1.125rem;
}

.contact-alternative {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-light-bg);
    border-radius: 8px;
}

.contact-alternative p {
    margin-bottom: var(--spacing-sm);
}

/* ===== ФОРМА ===== */

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-xs);
}

.required {
    color: #D32F2F;
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-sm);
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 56, 118, 0.1);
}

.checkbox-group {
    flex-direction: row;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.checkbox-label span {
    font-weight: 400;
}

/* ===== ФУТЕР ===== */

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: var(--spacing-xs);
}

/* ===== АДАПТИВНОСТЬ ===== */

/* Планшеты */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-slogan {
        font-size: 1rem;
    }

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

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        box-shadow: var(--shadow-md);
        padding: var(--spacing-md);
    }

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

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .model-scheme {
        flex-direction: column;
    }

    .scheme-arrow {
        transform: rotate(90deg);
    }

    .documents-content {
        grid-template-columns: 1fr;
    }

    .contacts-wrapper {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.25rem;
    }
}

/* Телефоны */
@media (max-width: 480px) {
    :root {
        --spacing-lg: 32px;
        --spacing-xl: 48px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        min-height: 80vh;
    }

    .hero-logo {
        height: 80px;
    }

    .hero-title {
        font-size: 2rem;
        letter-spacing: 2px;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .problems-grid,
    .elements-grid,
    .pilot-stats,
    .difference-grid,
    .support-grid,
    .audience-list {
        grid-template-columns: 1fr;
    }

    .btn {
        width: 100%;
        padding: 12px 24px;
    }

    .stat-number {
        font-size: 2rem;
    }
}