/* ===== ОСНОВНЫЕ ПЕРЕМЕННЫЕ ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a25;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --neon-pink: #ff00ff;
    --neon-cyan: #00ffff;
    --neon-purple: #8b5cf6;
    --neon-blue: #3b82f6;
    --gradient-primary: linear-gradient(135deg, #ff00ff, #00ffff);
    --gradient-secondary: linear-gradient(135deg, #8b5cf6, #3b82f6);
    --shadow-neon-pink: 0 0 20px rgba(255, 0, 255, 0.5), 0 0 40px rgba(255, 0, 255, 0.3);
    --shadow-neon-cyan: 0 0 20px rgba(0, 255, 255, 0.5), 0 0 40px rgba(0, 255, 255, 0.3);
    --shadow-neon-purple: 0 0 20px rgba(139, 92, 246, 0.5), 0 0 40px rgba(139, 92, 246, 0.3);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* ===== КОНТЕЙНЕР ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== ШАПКА ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 0, 255, 0.2);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 0, 255, 0.5);
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-list a {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-list a:hover {
    color: var(--text-primary);
}

.nav-list a:hover::after {
    width: 100%;
}

.nav-list a.active {
    color: var(--neon-cyan);
}

.nav-list a.active::after {
    width: 100%;
}

/* Мобильное меню */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.burger span {
    width: 25px;
    height: 3px;
    background: var(--neon-cyan);
    transition: var(--transition);
    border-radius: 2px;
}

/* ===== КНОПКИ ===== */
.btn {
    display: inline-block;
    padding: 15px 40px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-neon-pink);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(255, 0, 255, 0.7), 0 0 60px rgba(255, 0, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--neon-cyan);
    border: 2px solid var(--neon-cyan);
    box-shadow: var(--shadow-neon-cyan);
}

.btn-secondary:hover {
    background: var(--neon-cyan);
    color: var(--bg-primary);
    transform: translateY(-3px);
}

.btn-download {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: var(--shadow-neon-purple);
    font-size: 18px;
    padding: 18px 50px;
}

.btn-download:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.7), 0 0 80px rgba(139, 92, 246, 0.4);
}

/* ===== HERO СЕКЦИЯ ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(255, 0, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(0, 255, 255, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
}

.hero-image .mockup {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-neon-purple);
    border: 1px solid rgba(139, 92, 246, 0.3);
    background: var(--bg-card);
    padding: 20px;
}

/* Анимированный мокап приложения */
.app-mockup {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid rgba(255, 0, 255, 0.2);
    box-shadow: var(--shadow-neon-pink);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mockup-dots {
    display: flex;
    gap: 8px;
}

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.mockup-dots span:nth-child(1) { background: #ff5f56; }
.mockup-dots span:nth-child(2) { background: #ffbd2e; }
.mockup-dots span:nth-child(3) { background: #27ca40; }

.mockup-title {
    flex: 1;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.mockup-tasks {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mockup-task {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: var(--transition);
}

.mockup-task:hover {
    background: rgba(255, 255, 255, 0.08);
}

.task-checkbox {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--neon-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.task-checkbox.checked {
    background: var(--neon-cyan);
    border-color: var(--neon-cyan);
}

.task-checkbox.checked::after {
    content: '\2713';
    color: var(--bg-primary);
    font-size: 14px;
    font-weight: bold;
}

.task-text {
    flex: 1;
    font-size: 15px;
}

.task-text.completed {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.task-priority {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.priority-high { background: rgba(255, 0, 100, 0.2); color: #ff0064; }
.priority-medium { background: rgba(255, 189, 46, 0.2); color: #ffbd2e; }
.priority-low { background: rgba(0, 255, 255, 0.2); color: #00ffff; }

/* ===== СЕКЦИИ ===== */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
}

.section-title h2 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== КАРТОЧКИ ФУНКЦИЙ ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 0, 255, 0.3);
    box-shadow: var(--shadow-neon-pink);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    box-shadow: var(--shadow-neon-pink);
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

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

/* ===== СТАТИСТИКА ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 60px 0;
}

.stat-item {
    text-align: center;
    padding: 30px;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 16px;
}

/* ===== СТРАНИЦА СКАЧИВАНИЯ ===== */
.download-hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    text-align: center;
}

.download-content {
    max-width: 700px;
    margin: 0 auto;
}

.download-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.download-content h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-content p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.download-box {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 50px;
    border: 1px solid rgba(139, 92, 246, 0.3);
    box-shadow: var(--shadow-neon-purple);
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.download-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.download-info-item span {
    color: var(--neon-cyan);
    font-weight: 600;
}

/* Системные требования */
.requirements {
    margin-top: 80px;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.requirement-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.requirement-card h3 {
    color: var(--neon-cyan);
    margin-bottom: 20px;
    font-size: 20px;
}

.requirement-card ul li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.requirement-card ul li:last-child {
    border-bottom: none;
}

.requirement-card ul li span {
    color: var(--text-primary);
}

/* ===== ИНСТРУКЦИЯ ===== */
.steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    padding: 30px;
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.step:hover {
    border-color: rgba(0, 255, 255, 0.3);
    box-shadow: var(--shadow-neon-cyan);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: var(--shadow-neon-pink);
}

.step-content h3 {
    font-size: 22px;
    margin-bottom: 10px;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.faq-item {
    background: var(--bg-card);
    border-radius: 15px;
    margin-bottom: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(139, 92, 246, 0.3);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 18px;
    font-weight: 600;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--neon-cyan);
}

.faq-icon {
    font-size: 24px;
    color: var(--neon-purple);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-inner {
    padding: 0 30px 25px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* ===== О ПРОГРАММЕ ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.about-text h2 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    margin-top: 30px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.about-feature-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: 20px;
    box-shadow: var(--shadow-neon-purple);
}

/* Команда */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.team-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-neon-cyan);
}

.team-avatar {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.team-card h3 {
    font-size: 20px;
    margin-bottom: 5px;
}

.team-card .role {
    color: var(--neon-cyan);
    font-size: 14px;
    margin-bottom: 15px;
}

.team-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ===== КОНТАКТЫ ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.contact-info h2 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border: 1px solid rgba(255, 0, 255, 0.2);
}

.contact-item-content h4 {
    font-size: 16px;
    margin-bottom: 5px;
}

.contact-item-content p {
    color: var(--text-secondary);
}

/* Форма */
.contact-form {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.2);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===== ФУТЕР ===== */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
    display: inline-block;
}

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-title {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

/* ===== АНИМАЦИИ ===== */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { box-shadow: var(--shadow-neon-pink); }
    50% { box-shadow: 0 0 40px rgba(255, 0, 255, 0.8), 0 0 80px rgba(255, 0, 255, 0.5); }
}

.glowing {
    animation: glow 2s ease-in-out infinite;
}

/* ===== АДАПТИВНОСТЬ ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image {
        max-width: 500px;
        margin: 0 auto;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--bg-secondary);
        padding: 100px 40px;
        transition: var(--transition);
        border-left: 1px solid rgba(255, 0, 255, 0.2);
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 20px;
    }

    .burger {
        display: flex;
    }

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

    .burger.active span:nth-child(2) {
        opacity: 0;
    }

    .burger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .section-title h2 {
        font-size: 32px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }

    .requirements-grid {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
        text-align: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .download-info {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 28px;
    }

    .hero-content p {
        font-size: 16px;
    }

    .btn {
        padding: 12px 30px;
        font-size: 14px;
    }

    .section {
        padding: 60px 0;
    }

    .stat-number {
        font-size: 36px;
    }
}