/* --- ПЕРЕМЕННЫЕ И ТЕМА --- */
:root {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #020617 100%);
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.5);
    --secondary: #a855f7;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(12px);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- БАЗОВЫЕ СТИЛИ --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

/* Блокируем стандартный системный скролл на окне браузера */
html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    background-color: #020617;
}

/* Изолированный слой фона (абсолютно статичный) */
.fixed-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-gradient);
    z-index: -3;
    pointer-events: none;
    overflow: hidden;
}

/* Скролл-контейнер для интерфейса */
.scroll-container {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    position: relative;
    z-index: 1;
    -webkit-overflow-scrolling: touch; /* Плавный инерционный скролл на iOS */
}

/* Стилизация скроллбара контейнера */
.scroll-container::-webkit-scrollbar {
    width: 8px;
}
.scroll-container::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
}
.scroll-container::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
    border: 2px solid rgba(15, 23, 42, 0.5);
}
.scroll-container::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* --- ШАПКА / НАВИГАЦИЯ --- */
header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 98;
    padding: 20px 0;
    transition: var(--transition-smooth);
}
header.scrolled {
    position: fixed;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    padding: 12px 0;
    animation: slideDown 0.5s ease-out forwards;
}
@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: 1px;
    position: relative;
}
.logo::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--primary);
    bottom: 5px;
    right: -10px;
    border-radius: 50%;
}
.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}
.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
    padding: 5px 0;
}
.nav-link:hover, .nav-link.active {
    color: var(--text-main);
    text-shadow: 0 0 10px var(--primary-glow);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition-smooth);
}
.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}
.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- СЕКЦИИ --- */
section {
    padding: 120px 20px 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* --- СТЕКЛОЭФФЕКТ (GLASSMORPHISM CARD) --- */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--glass-shadow);
    transition: var(--transition-smooth);
}
.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: 0 12px 40px 0 rgba(99, 102, 241, 0.15);
}

/* --- ГЛАВНАЯ СЕКЦИЯ (HOME) --- */
#home {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}
.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
    margin-bottom: 10px;
}
.hero-text h2 {
    font-size: 2rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 20px;
    height: 40px;
}
.hero-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 35px;
    max-width: 600px;
}
.hero-buttons {
    display: flex;
    gap: 20px;
}

/* --- КНОПКИ --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #fff;
    border: none;
    box-shadow: 0 4px 15px var(--primary-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.6);
}
.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 2px solid var(--glass-border);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-main);
}

/* Плейсхолдер под аватарку */
.hero-image-container {
    display: flex;
    justify-content: center;
    align-items: center;
}
.profile-img-placeholder {
    width: 280px;
    height: 280px;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 40px var(--primary-glow);
    animation: morph 8s ease-in-out infinite, rotate 20s linear infinite;
}
.profile-img-placeholder i {
    font-size: 6rem;
    color: #fff;
    animation: counter-rotate 20s linear infinite;
}
@keyframes morph {
    0% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    50% { border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%; }
    100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
}
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes counter-rotate {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

/* --- ОБЩИЕ СТИЛИ ЗАГОЛОВКОВ --- */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 50px;
    position: relative;
}
.section-title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 4px;
    background: var(--primary);
    left: 0;
    bottom: -10px;
    border-radius: 2px;
}

/* --- О БО МНЕ --- */
.about-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.about-text-block p {
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
}
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.about-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}
.about-card i {
    font-size: 2rem;
    color: var(--primary);
}
.about-card h3 {
    font-size: 1.1rem;
    color: var(--text-main);
}
.about-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* --- НАВЫКИ --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}
.skill-card {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.skill-info {
    display: flex;
    justify-content: space-between;
    color: var(--text-main);
    font-weight: 500;
}
.skill-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
}
.skill-progress {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 10px;
    transition: width 1.5s cubic-bezier(0.1, 1, 0.1, 1);
}

/* --- ПРОЕКТЫ --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}
.project-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.project-img {
    height: 200px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--glass-border);
}
.project-img i {
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.7;
}
.project-details {
    padding: 25px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.project-details h3 {
    color: var(--text-main);
    font-size: 1.3rem;
}
.project-details p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.project-tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}
.project-links {
    margin-top: 10px;
}

/* --- УВЛЕЧЕНИЯ --- */
.hobbies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}
.hobby-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}
.hobby-card i {
    font-size: 2.5rem;
    color: var(--secondary);
}
.hobby-card h3 {
    color: var(--text-main);
    font-size: 1.2rem;
}
.hobby-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* --- ТАЙМЛАЙН (ДОСТИЖЕНИЯ И ОБУЧЕНИЕ) --- */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 0;
}
.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--glass-border);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}
.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: transparent;
    width: 50%;
}
.timeline-item::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    right: -8px;
    background-color: var(--primary);
    border: 4px solid #0f172a;
    top: 32px;
    border-radius: 50%;
    z-index: 1;
}
.left { left: 0; }
.right { left: 50%; }
.right::after { left: -8px; }

.timeline-panel {
    position: relative;
}
.timeline-date {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 5px;
}
.timeline-panel h3 {
    color: var(--text-main);
    font-size: 1.2rem;
    margin-bottom: 5px;
}
.timeline-panel h4 {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 15px;
}
.timeline-panel p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* --- КОНТАКТЫ --- */
.contact-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
}
.contact-form-wrapper {
    display: flex;
    flex-direction: column;
}
#portfolio-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.form-group {
    width: 100%;
}
.form-control {
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 15px 20px;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: var(--transition-smooth);
}
.form-control:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.15);
}
textarea.form-control {
    min-height: 150px;
    resize: none;
}
.contact-info-wrapper {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.info-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
}
.info-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.2rem;
}
.info-details h3 {
    color: var(--text-main);
    font-size: 1rem;
    font-weight: 500;
}
.info-details p, .info-details a {
    color: var(--text-muted);
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition-smooth);
}
.info-details a:hover {
    color: var(--primary);
}

/* --- ПОДВАЛ (FOOTER) --- */
footer {
    max-width: 1200px;
    margin: 80px auto 0 auto;
    padding: 40px 20px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}
footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}
.social-icons {
    display: flex;
    gap: 15px;
}
.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-smooth);
}
.social-icon:hover {
    color: var(--text-main);
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
}

/* --- ДОПОЛНИТЕЛЬНЫЕ ИНТЕРФЕЙСНЫЕ ЭЛЕМЕНТЫ --- */
/* Прелоадер */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #020617;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}
.loader {
    width: 50px;
    height: 50px;
    border: 3px solid var(--glass-border);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Кастомный курсор */
#custom-cursor {
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9999;
    transition: width 0.3s, height 0.3s, background-color 0.3s;
}
#custom-cursor.cursor-hover {
    width: 40px;
    height: 40px;
    background-color: rgba(99, 102, 241, 0.1);
    border-color: var(--secondary);
}

/* Индикатор прогресса чтения */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    z-index: 999;
}

/* Кнопка "Вверх" */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 99;
    box-shadow: 0 4px 15px var(--primary-glow);
}
#back-to-top.show {
    opacity: 1;
    visibility: visible;
}
#back-to-top:hover {
    background: var(--secondary);
    transform: translateY(-5px);
}

/* Анимированные фигуры на фоне */
.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -2;
}
.shape {
    position: absolute;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
    border-radius: 50%;
    filter: blur(80px);
}
.shape-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: -50px;
    animation: float1 15s ease-in-out infinite alternate;
}
.shape-2 {
    width: 400px;
    height: 400px;
    bottom: 10%;
    right: -100px;
    animation: float2 20s ease-in-out infinite alternate;
}
@keyframes float1 {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(50px, 80px) rotate(90deg); }
}
@keyframes float2 {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-80px, -50px) rotate(-90deg); }
}

/* Эффекты появления при прокрутке */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* --- МЕДИА-ЗАПРОСЫ (АДАПТИВНОСТЬ) --- */
@media (max-width: 992px) {
    #home {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-text h1 { font-size: 2.8rem; }
    .hero-text p { margin: 0 auto 35px auto; }
    .hero-buttons { justify-content: center; }
    .hero-image-container { order: -1; }
    .timeline::after { left: 40px; }
    .timeline-item {
        width: 100%;
        padding-left: 80px;
        padding-right: 20px;
    }
    .timeline-item::after { left: 32px !important; }
    .left, .right { left: 0; }
    .contact-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    /* Скрываем кастомный курсор на мобильных */
    #custom-cursor { display: none; }
    
    .hamburger { display: block; }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 250px;
        height: 100vh;
        background: rgba(15, 23, 42, 0.95);
        backdrop-filter: var(--glass-blur);
        -webkit-backdrop-filter: var(--glass-blur);
        flex-direction: column;
        padding: 100px 30px;
        gap: 30px;
        transition: var(--transition-smooth);
        border-left: 1px solid var(--glass-border);
    }
    .nav-menu.active { right: 0; }
    footer {
        flex-direction: column;
        text-align: center;
    }
}