/* =============================================
   СТИЛИ ПОРТФОЛИО — Корпоративный стиль РЦК
   Цветовая палитра и шрифты с сайта rckspb.ru
   ============================================= */

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Основные цвета РЦК */
    --primary: #365FF0;
    --primary-dark: #2348C4;
    --primary-light: #5A7DF5;
    --primary-bg: #EEF5FF;

    /* Дополнительные цвета */
    --accent: #33A661;
    --accent-warm: #F2CF68;

    /* Тёмные */
    --dark-primary: #080D41;
    --dark-secondary: #4B6B9B;
    --content-primary: #111822;
    --content-secondary: #34445C;
    --supporting: #9BADCA;

    /* Серые */
    --gray-900: #111822;
    --gray-800: #1f2937;
    --gray-700: #34445C;
    --gray-600: #4B6B9B;
    --gray-500: #6b7280;
    --gray-400: #9BADCA;
    --gray-300: #D8E1EF;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #F8FAFE;
    --white: #ffffff;

    /* Тени */
    --shadow-sm: 0 1px 2px rgba(8, 13, 65, 0.05);
    --shadow-md: 0 4px 12px rgba(8, 13, 65, 0.08);
    --shadow-lg: 0 10px 24px rgba(8, 13, 65, 0.1);
    --shadow-xl: 0 20px 40px rgba(8, 13, 65, 0.12);

    /* Скругления */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Анимация */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== ТЁМНАЯ ТЕМА ===== */
[data-theme="dark"] {
    --primary: #5A7DF5;
    --primary-dark: #365FF0;
    --primary-light: #8099F8;
    --primary-bg: #1A2245;

    --dark-primary: #E8ECF4;
    --dark-secondary: #9BADCA;
    --content-primary: #E8ECF4;
    --content-secondary: #B0C0D8;
    --supporting: #6B7FA0;

    --gray-900: #E8ECF4;
    --gray-800: #C8D4E6;
    --gray-700: #B0C0D8;
    --gray-600: #8A9FBF;
    --gray-500: #6B7FA0;
    --gray-400: #546888;
    --gray-300: #3A4A66;
    --gray-200: #2A3852;
    --gray-100: #1E2A40;
    --gray-50: #131D30;
    --white: #162033;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* Переключатель темы */
.theme-toggle {
    position: relative;
    width: 52px;
    height: 28px;
    background: var(--gray-200);
    border-radius: 28px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    margin-left: 12px;
    flex-shrink: 0;
}

.theme-toggle::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    background: var(--white);
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .theme-toggle {
    background: var(--primary);
}

[data-theme="dark"] .theme-toggle::after {
    left: 27px;
    background: var(--white);
}

.theme-toggle-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    pointer-events: none;
    z-index: 1;
    transition: var(--transition);
}

.theme-toggle-icon.sun {
    left: 6px;
    color: #F59E0B;
    opacity: 1;
}

.theme-toggle-icon.moon {
    right: 6px;
    color: #6B7280;
    opacity: 0.5;
}

[data-theme="dark"] .theme-toggle-icon.sun {
    opacity: 0.5;
}

[data-theme="dark"] .theme-toggle-icon.moon {
    opacity: 1;
    color: #FDE68A;
}

/* Тёмная тема: Header */
[data-theme="dark"] .header {
    background: rgba(22, 32, 51, 0.92);
    border-bottom-color: rgba(42, 56, 82, 0.6);
}

[data-theme="dark"] .header.scrolled {
    border-bottom-color: rgba(54, 95, 240, 0.2);
}

[data-theme="dark"] .burger span {
    background: #E8ECF4;
}

/* Тёмная тема: Hero */
[data-theme="dark"] .hero {
    background: linear-gradient(165deg, #0B1120 0%, #131D30 40%, #162033 80%);
}

[data-theme="dark"] .hero-desc strong {
    color: #E8ECF4;
}

[data-theme="dark"] .hero-badge {
    background: #1E2A40;
    color: #B0C0D8;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Тёмная тема: Footer */
[data-theme="dark"] .footer {
    background: #060B18;
}

[data-theme="dark"] .footer-brand {
    color: #ffffff;
}

[data-theme="dark"] .footer-links a {
    color: #9BADCA;
}

[data-theme="dark"] .footer-links a:hover {
    color: #ffffff;
}

/* Тёмная тема: CTA card */
[data-theme="dark"] .cta-card {
    background: linear-gradient(160deg, #1A2245, #162033);
    border-color: #2A3852;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Montserrat', 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-50);
    color: var(--content-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    background: var(--primary-bg);
    color: var(--primary);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 6px 20px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--dark-primary);
    margin-bottom: 12px;
    line-height: 1.25;
}

.section-subtitle {
    font-family: 'Open Sans', sans-serif;
    font-size: 1.05rem;
    color: var(--content-secondary);
    max-width: 620px;
    margin: 0 auto 20px;
    line-height: 1.6;
}

.section-divider {
    width: 50px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
    margin: 0 auto;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(222, 234, 255, 0.5);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--primary-bg);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--dark-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-sm);
}

.logo-text {
    letter-spacing: -0.3px;
}

.nav-list {
    display: flex;
    gap: 4px;
}

.nav-link {
    padding: 8px 18px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--content-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    letter-spacing: 0.2px;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-bg);
}

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.burger span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--dark-primary);
    border-radius: 3px;
    transition: var(--transition);
}

.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(5px, -5px);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 72px;
    background: linear-gradient(165deg, #F0F5FF 0%, #EEF5FF 40%, #FAFCFE 80%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 16px;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
}

.hero-name {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--dark-primary);
    line-height: 1.1;
}

.hero-role {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--content-secondary);
}

.hero-desc {
    font-family: 'Open Sans', sans-serif;
    font-size: 1.05rem;
    color: var(--content-secondary);
    line-height: 1.75;
    margin-bottom: 28px;
    max-width: 520px;
}

.hero-desc strong {
    color: var(--dark-primary);
    font-weight: 700;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hero-stat-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
}

.hero-stat-label {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.8rem;
    color: var(--supporting);
    font-weight: 500;
}

.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(54, 95, 240, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(54, 95, 240, 0.4);
}

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

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

.hero-photo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.photo-frame {
    width: 340px;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-xl);
    background: var(--white);
    border: 3px solid var(--white);
}

.photo-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, var(--primary-bg), #ffffff);
}

.photo-placeholder i {
    font-size: 5rem;
    color: var(--gray-300);
}

.hero-brands {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    height: 36px;
    opacity: 0.8;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--white);
    border-radius: 50px;
    box-shadow: var(--shadow-md);
    font-family: 'Open Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--content-secondary);
}

.hero-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
}

.hero-shape-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(54, 95, 240, 0.08) 0%, transparent 70%);
    top: -200px;
    right: -150px;
}

.hero-shape-2 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(54, 95, 240, 0.05) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
}

.hero-shape-3 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(51, 166, 97, 0.06) 0%, transparent 70%);
    top: 30%;
    left: 50%;
}

/* ===== ABOUT ===== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.about-card {
    padding: 36px 28px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.about-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 18px;
}

.about-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-primary);
    margin-bottom: 10px;
}

.about-card p {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.92rem;
    color: var(--content-secondary);
    line-height: 1.7;
}

/* ===== EXPERIENCE (TIMELINE) ===== */
.experience {
    background: var(--gray-50);
}

.timeline {
    position: relative;
    max-width: 720px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    padding-left: 68px;
    padding-bottom: 44px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 14px;
    top: 4px;
    width: 22px;
    height: 22px;
    background: var(--white);
    border: 4px solid var(--primary);
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 0 4px rgba(54, 95, 240, 0.1);
}

.timeline-item:last-child .timeline-dot {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(51, 166, 97, 0.1);
}

.timeline-date {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline-item:last-child .timeline-date {
    color: var(--accent);
}

.timeline-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-primary);
    margin-bottom: 2px;
}

.timeline-company {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--content-secondary);
    margin-bottom: 8px;
}

.timeline-desc {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.9rem;
    color: var(--content-secondary);
    line-height: 1.7;
}

/* ===== PROJECTS ===== */
.projects {
    background: var(--white);
}

/* ===== PROJECTS TABS ===== */
.projects-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.projects-tab {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: 50px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--content-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.projects-tab i {
    font-size: 1rem;
}

.projects-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-bg);
}

.projects-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(54, 95, 240, 0.3);
}

.projects-tab.active:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* ===== PROJECTS CAROUSEL ===== */
.projects-carousel {
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
    min-width: 0;
}

.projects-carousel-viewport {
    overflow: hidden;
    flex: 1;
    border-radius: var(--radius-lg);
    min-width: 0;
}

.projects-carousel-track {
    display: flex;
    gap: 28px;
    padding: 6px;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card {
    flex: 0 0 350px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    min-height: 510px;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.carousel-btn {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    color: var(--content-secondary);
    font-size: 1rem;
    z-index: 1;
}

.carousel-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(54, 95, 240, 0.3);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.project-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 10px;
}

.project-company {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-height: 32px;
}

.project-icon {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 1rem;
}

.project-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--dark-primary);
    margin-bottom: 8px;
    min-height: 48px;
    line-height: 1.35;
}

.project-desc {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.88rem;
    color: var(--content-secondary);
    line-height: 1.6;
    margin-bottom: 18px;
    flex: 0 0 auto;
    min-height: 54px;
}

.project-results {
    margin-top: auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    align-items: stretch;
}

.project-result-item {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 3px;
    padding: 8px;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    min-height: 62px;
}

.project-result-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.15;
}

.project-result-label {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.7rem;
    color: var(--supporting);
    font-weight: 500;
    line-height: 1.3;
}

.project-case-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    padding: 10px 18px;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: var(--radius-md);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid transparent;
    align-self: flex-start;
}

.project-case-btn:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(54, 95, 240, 0.2);
}

/* ===== PROJECT IMAGES ===== */
.project-images {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 4px 0 16px;
}

.project-images--single {
    grid-template-columns: 1fr;
}

.project-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    background: var(--gray-100);
}

.project-image img {
    width: 100%;
    height: 108px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.project-image:hover img {
    transform: scale(1.05);
}

/* ===== PROJECT LINKS ===== */
.project-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
    align-items: center;
}

.project-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
}

.project-link--github {
    background: #24292e;
    color: #ffffff;
}

.project-link--github:hover {
    background: #1b1f23;
    box-shadow: 0 4px 12px rgba(36, 41, 46, 0.3);
}

.project-link--demo {
    background: var(--accent);
    color: #ffffff;
}

.project-link--demo:hover {
    background: #2a8a52;
    box-shadow: 0 4px 12px rgba(51, 166, 97, 0.3);
}

/* ===== SKILLS ===== */
.skills {
    background: var(--gray-50);
}

.skills-content {
    display: flex;
    flex-direction: column;
    gap: 36px;
    max-width: 900px;
    margin: 0 auto;
}

.skills-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
}

.skills-category h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark-primary);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skills-category h3 i {
    color: var(--primary);
    font-size: 1rem;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    padding: 8px 18px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 50px;
    font-family: 'Open Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--content-secondary);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(54, 95, 240, 0.2);
}

.skills-category-full {
    grid-column: 1 / -1;
}

/* ===== CONTACT ===== */
.contact {
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 48px;
    max-width: 920px;
    margin: 0 auto;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 18px 24px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.contact-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 1.1rem;
}

.contact-item h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--supporting);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.contact-item a {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--dark-primary);
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary);
}

.contact-cta {
    display: flex;
    align-items: flex-start;
    align-self: start;
}

.cta-card {
    width: 100%;
    padding: 20px 28px;
    background: linear-gradient(160deg, var(--primary-bg), #ffffff);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    text-align: center;
    display: flex;
    flex-direction: column;
}

.cta-card-icon {
    font-size: 1.9rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.cta-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark-primary);
    margin-bottom: 6px;
}

.cta-card p {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.9rem;
    color: var(--content-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}

.cta-card .btn {
    width: 100%;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.85rem;
}

.cta-card .btn i {
    font-size: 0.95rem;
    line-height: 1;
    margin: 0;
    color: currentColor;
}

.cta-actions {
    display: grid;
    gap: 10px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark-primary);
    color: var(--gray-400);
    padding: 48px 0 32px;
}

.footer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--white);
}

.footer-logo {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-sm);
    color: var(--white);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-400);
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: center;
    font-family: 'Open Sans', sans-serif;
    font-size: 0.85rem;
}

.footer-np {
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.footer-np i {
    font-size: 0.75rem;
}

.footer-rck a {
    color: var(--primary-light);
    transition: var(--transition);
}

.footer-rck a:hover {
    color: var(--white);
    text-decoration: underline;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 36px;
        text-align: center;
    }

    .hero-text {
        order: 2;
    }

    .hero-photo {
        order: 1;
    }

    .hero-desc {
        max-width: 100%;
    }

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

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

    .hero-name {
        font-size: 2.3rem;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .photo-frame {
        width: 240px;
        height: 290px;
    }

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

    .skills-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--white);
        padding: 20px;
        gap: 2px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        transform: translateY(-120%);
        opacity: 0;
        transition: var(--transition);
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-list.open {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-link {
        display: block;
        padding: 14px 16px;
        font-size: 0.95rem;
    }

    .burger {
        display: flex;
    }

    .hero-name {
        font-size: 1.8rem;
    }

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

    .hero-stats {
        gap: 20px;
    }

    .hero-stat-value {
        font-size: 1.3rem;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .project-card {
        flex: 0 0 calc(100% - 28px);
        min-width: 280px;
    }

    .projects-carousel {
        gap: 0;
    }

    .projects-carousel-viewport {
        flex: 1 1 100%;
    }

    .carousel-btn {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 40px;
        height: 40px;
        box-shadow: var(--shadow-md);
    }

    .carousel-prev {
        left: -12px;
    }

    .carousel-next {
        right: -12px;
    }

    .project-results {
        grid-template-columns: 1fr 1fr;
    }

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

    .timeline::before {
        left: 18px;
    }

    .timeline-item {
        padding-left: 52px;
    }

    .timeline-dot {
        left: 10px;
        width: 18px;
        height: 18px;
    }

    .footer-top {
        flex-direction: column;
        gap: 16px;
    }

    .footer-links {
        gap: 14px;
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-name {
        font-size: 1.5rem;
    }

    .hero-stat-value {
        font-size: 1.1rem;
    }

    .btn {
        padding: 12px 22px;
        font-size: 0.85rem;
    }

    .project-card {
        flex: 0 0 100%;
        min-width: 260px;
        min-height: 535px;
    }

    .project-image img {
        height: 104px;
    }

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

    .carousel-btn {
        width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }

    .carousel-prev {
        left: -8px;
    }

    .carousel-next {
        right: -8px;
    }
}

/* ===== SCROLL PROGRESS BAR ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    z-index: 1001;
    transition: width 0.1s linear;
    border-radius: 0 3px 3px 0;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes floatUpDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.animate-in {
    animation: fadeInUp 0.5s ease forwards;
}

/* Герой-анимации */
.hero-text {
    animation: fadeInLeft 0.7s ease forwards;
}

.hero-photo {
    animation: fadeInRight 0.7s ease forwards;
}

.hero-shape-1 {
    animation: floatUpDown 8s ease-in-out infinite;
}

.hero-shape-2 {
    animation: floatUpDown 6s ease-in-out infinite reverse;
}

.hero-shape-3 {
    animation: floatUpDown 10s ease-in-out infinite;
}

/* Параллакс для hero-shapes при скролле */
@media (prefers-reduced-motion: no-preference) {
    .hero-shape {
        will-change: transform;
    }
}

/* Краткая задержка для каскадной анимации */
.about-card:nth-child(1),
.project-card:nth-child(1),
.timeline-item:nth-child(1) {
    animation-delay: 0.05s;
}
.about-card:nth-child(2),
.project-card:nth-child(2),
.timeline-item:nth-child(2) {
    animation-delay: 0.1s;
}
.about-card:nth-child(3),
.project-card:nth-child(3),
.timeline-item:nth-child(3) {
    animation-delay: 0.15s;
}
.about-card:nth-child(4),
.project-card:nth-child(4) {
    animation-delay: 0.2s;
}

/* Анимация при наведении на hero-stat */
.hero-stat {
    transition: var(--transition);
}
.hero-stat:hover {
    transform: translateY(-4px);
}
.hero-stat:hover .hero-stat-value {
    transform: scale(1.1);
}

/* Анимация для photo-frame */
.photo-frame {
    animation: scaleIn 0.8s ease forwards;
}
.photo-frame:hover {
    transform: scale(1.02);
    box-shadow: 0 28px 56px rgba(8, 13, 65, 0.18);
}

/* ===== PRINT / PDF ===== */
@media print {
    @page {
        size: A4;
        margin: 12mm;
    }

    .header,
    .burger,
    .theme-toggle,
    .hero-btns,
    .hero-shapes,
    .contact-cta,
    .footer-links,
    .scroll-progress {
        display: none !important;
    }

    body {
        background: #ffffff !important;
        color: #111822 !important;
        font-size: 11px;
        line-height: 1.5;
    }

    [data-theme="dark"] body,
    [data-theme="dark"] {
        background: #ffffff !important;
        color: #111822 !important;
    }

    .hero {
        min-height: auto;
        padding: 0 0 20px 0;
        background: #ffffff !important;
    }

    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .hero-name {
        font-size: 1.6rem;
        color: #080D41 !important;
    }

    .hero-role {
        font-size: 1rem;
        color: #34445C !important;
    }

    .hero-desc,
    .hero-desc strong {
        color: #34445C !important;
    }

    .hero-stat-value {
        font-size: 1.2rem;
        color: #365FF0 !important;
    }

    .hero-stat-label {
        color: #9BADCA !important;
    }

    .hero-badge {
        background: #F8FAFE !important;
        color: #34445C !important;
        box-shadow: none !important;
        border: 1px solid #e5e7eb;
    }

    .photo-frame {
        width: 160px;
        height: 190px;
        box-shadow: none !important;
        border: 2px solid #e5e7eb;
    }

    .section {
        padding: 16px 0;
        background: #ffffff !important;
        break-inside: avoid;
    }

    .section-header {
        margin-bottom: 20px;
    }

    .section-title {
        font-size: 1.3rem;
        color: #080D41 !important;
    }

    .section-tag {
        background: #EEF5FF !important;
        color: #365FF0 !important;
    }

    .about-card,
    .project-card,
    .contact-item,
    .cta-card,
    .skill-tag {
        background: #F8FAFE !important;
        color: #111822 !important;
        border: 1px solid #e5e7eb !important;
        box-shadow: none !important;
        break-inside: avoid;
    }

    .about-icon,
    .project-icon,
    .contact-icon,
    .logo-icon,
    .footer-logo {
        background: #365FF0 !important;
        color: #ffffff !important;
    }

    .about-card h3,
    .project-title,
    .skills-category h3,
    .timeline-title,
    .contact-item a,
    .cta-card h3 {
        color: #080D41 !important;
    }

    .about-card p,
    .project-desc,
    .timeline-desc,
    .timeline-company,
    .contact-item h4,
    .cta-card p {
        color: #34445C !important;
    }

    .project-result-value {
        color: #365FF0 !important;
    }

    .project-result-label {
        color: #9BADCA !important;
    }

    .project-result-item {
        background: #ffffff !important;
        border: 1px solid #e5e7eb !important;
    }

    .timeline::before {
        background: #365FF0 !important;
    }

    .timeline-dot {
        background: #ffffff !important;
        border-color: #365FF0 !important;
    }

    .timeline-item:last-child .timeline-dot {
        border-color: #33A661 !important;
    }

    .timeline-date {
        color: #365FF0 !important;
    }

    .cta-card {
        background: #EEF5FF !important;
        text-align: left;
    }

    .carousel-btn,
    .project-case-btn {
        display: none !important;
    }

    .projects-carousel {
        display: block;
    }

    .projects-carousel-viewport {
        overflow: visible;
    }

    .projects-carousel-track {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        transform: none !important;
    }

    .project-card {
        flex: auto;
        min-width: 0;
    }

    .cta-card .btn {
        display: none;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .footer {
        background: #ffffff !important;
        color: #34445C !important;
        padding: 16px 0;
        border-top: 1px solid #e5e7eb;
    }

    .footer-brand {
        color: #080D41 !important;
    }

    .footer-bottom {
        color: #34445C !important;
    }

    .footer-np {
        color: #33A661 !important;
    }

    .footer-rck a {
        color: #365FF0 !important;
    }

    * {
        animation: none !important;
        transition: none !important;
    }
}

/* ===== PROJECTS TABS RESPONSIVE ===== */
@media (max-width: 768px) {
    .projects-tabs {
        gap: 8px;
        margin-bottom: 24px;
    }

    .projects-tab {
        padding: 10px 18px;
        font-size: 0.8rem;
        gap: 6px;
    }

    .projects-tab i {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .projects-tabs {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .projects-tab {
        justify-content: center;
        padding: 12px 16px;
        font-size: 0.85rem;
    }
}

/* ===== PROJECT DETAIL BUTTON ===== */
.project-detail-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px 20px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-md);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--primary);
    align-self: flex-start;
    text-decoration: none;
}

.project-detail-btn:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(54, 95, 240, 0.3);
}

.project-detail-btn i {
    font-size: 0.9rem;
}

/* ===== PROJECT ACTIONS ===== */
.project-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

/* ===== PROJECT DETAIL PAGE ===== */
.project-detail {
    padding-top: 100px;
    padding-bottom: 60px;
    background: var(--gray-50);
    min-height: 100vh;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 32px;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--primary-dark);
    transform: translateX(-4px);
}

.back-link i {
    font-size: 0.8rem;
}

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

.project-detail-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.project-detail-category {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-bg);
    color: var(--primary);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.project-detail-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-primary);
    margin-bottom: 12px;
    line-height: 1.2;
}

.project-detail-company {
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    color: var(--content-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.project-detail-company i {
    color: var(--primary);
}

.project-detail-process {
    margin-top: 10px;
    font-family: 'Open Sans', sans-serif;
    font-size: 0.95rem;
    color: var(--content-secondary);
    line-height: 1.6;
}

.project-detail-body {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.project-detail-section {
    padding: 32px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.project-detail-section h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.project-detail-section h2 i {
    color: var(--primary);
}

.project-detail-section p {
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    color: var(--content-secondary);
    line-height: 1.8;
}

.project-detail-list {
    display: grid;
    gap: 12px;
    list-style: none;
}

.project-detail-list li {
    position: relative;
    padding-left: 24px;
    font-family: 'Open Sans', sans-serif;
    font-size: 0.98rem;
    color: var(--content-secondary);
    line-height: 1.65;
}

.project-detail-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
}

.project-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.project-detail-tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 50px;
    background: var(--primary-bg);
    color: var(--primary);
    font-family: 'Open Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
}

.project-detail-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.project-detail-result-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--gray-200);
}

.project-detail-result-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.project-detail-result-label {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.85rem;
    color: var(--content-secondary);
    font-weight: 500;
}

.project-detail-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.project-detail-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--white);
}

.project-detail-image img {
    width: 100%;
    height: auto;
    display: block;
}

.project-detail-image-caption {
    padding: 12px 16px;
    font-family: 'Open Sans', sans-serif;
    font-size: 0.85rem;
    color: var(--content-secondary);
    text-align: center;
    background: var(--gray-50);
}

.project-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 32px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.project-detail-case,
.project-detail-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-decoration: none;
}

.project-detail-case {
    background: var(--gray-100);
    color: var(--content-primary);
    border: 2px solid var(--gray-200);
}

.project-detail-case:hover {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

.project-detail-link.btn-primary {
    background: var(--primary);
    color: var(--white);
    border: 2px solid var(--primary);
}

.project-detail-link.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(54, 95, 240, 0.3);
}

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

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

.project-detail-error {
    text-align: center;
    padding: 60px 20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.project-detail-error i {
    font-size: 3rem;
    color: var(--supporting);
    margin-bottom: 20px;
}

.project-detail-error h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-primary);
    margin-bottom: 12px;
}

.project-detail-error p {
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    color: var(--content-secondary);
    margin-bottom: 24px;
}

/* ===== PROJECT DETAIL RESPONSIVE ===== */
@media (max-width: 768px) {
    .project-detail {
        padding-top: 80px;
    }

    .project-detail-header {
        padding: 24px;
    }

    .project-detail-title {
        font-size: 1.5rem;
    }

    .project-detail-section,
    .project-detail-actions {
        padding: 20px;
    }

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

    .project-detail-images {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .project-detail-results {
        grid-template-columns: 1fr;
    }

    .project-detail-actions {
        flex-direction: column;
    }

    .project-detail-case,
    .project-detail-link {
        width: 100%;
        justify-content: center;
    }
}