/* ============================================
   CSS Variables — Dark Navy Portfolio Theme
   ============================================ */
:root {
    --bg-primary:    #0a0e1a;
    --bg-secondary:  #0d1228;
    --bg-card:       #111830;
    --border:        #1e2d56;
    --accent:        #f0a500;
    --accent-light:  #ffc44d;
    --text-primary:  #ffffff;
    --text-secondary:#8892b0;
    --text-muted:    #4a5578;
    --nav-height:    70px;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

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

/* ============================================
   Header / Navbar
   ============================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    background: rgba(10, 14, 26, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 5%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0a0e1a;
    font-size: 0.9rem;
    font-weight: 700;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.logo-img {
    height: 44px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
    display: block;
}

/* Footer logo */
.footer-logo-link {
    text-decoration: none;
}

.footer-logo-img {
    height: 36px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
    display: block;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-logo-link:hover .footer-logo-img {
    opacity: 1;
}

.site-nav {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 0;
    margin: 0;
    padding: 0;
}

.site-nav a {
    display: block;
    padding: 8px 14px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    transition: color 0.25s;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--accent);
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.header-divider {
    width: 1px;
    height: 20px;
    background: var(--border);
}

.header-phone a {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
    background: none;
    border: none;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: 0.3s;
}

/* ============================================
   Page content offset (under fixed header)
   ============================================ */
.mt-page {
    padding-top: var(--nav-height);
}

/* ============================================
   Section common styles
   ============================================ */
.site-section {
    padding: 100px 5%;
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-heading {
    text-align: center;
    position: relative;
    margin-bottom: 70px;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
}

.section-bg-text {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: clamp(55px, 9vw, 120px);
    font-weight: 900;
    letter-spacing: 6px;
    color: rgba(255, 255, 255, 0.03);
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    line-height: 1;
    z-index: 0;
}

.section-title {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    position: relative;
    z-index: 1;
    margin-bottom: 10px;
}

.section-line {
    width: 55px;
    height: 2px;
    background: var(--accent);
    position: relative;
    z-index: 1;
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--nav-height) 5% 0;
    background: var(--bg-primary);
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    min-height: calc(100vh - var(--nav-height));
}

.hero-content .hero-greeting {
    font-size: 1.1rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 8px;
}

.hero-content .hero-name {
    font-size: clamp(2.8rem, 6vw, 5.5rem);
    font-weight: 900;
    line-height: 1.0;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.hero-content .hero-role {
    font-size: 1.1rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 40px;
}

.btn-hire {
    display: inline-block;
    background: var(--accent);
    color: #0a0e1a;
    padding: 13px 35px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    letter-spacing: 0.3px;
}

.btn-hire:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(240, 165, 0, 0.3);
    color: #0a0e1a;
    text-decoration: none;
}

.hero-socials {
    display: flex;
    gap: 14px;
    margin-top: 40px;
}

.hero-social-link {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.hero-social-link:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.hero-photo-wrapper {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    height: 100%;
    min-height: 500px;
}

.hero-photo {
    width: 100%;
    max-width: 460px;
    height: 580px;
    object-fit: cover;
    object-position: top center;
    display: block;
}

.hero-photo-placeholder {
    width: 100%;
    max-width: 460px;
    height: 580px;
    background: linear-gradient(160deg, #111830 0%, #1a2550 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 6rem;
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 60px;
    align-items: start;
}

.about-photo {
    width: 100%;
    max-width: 380px;
    aspect-ratio: 3/4;
    object-fit: cover;
    object-position: top;
    display: block;
}

.about-photo-placeholder {
    width: 100%;
    max-width: 380px;
    aspect-ratio: 3/4;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 4rem;
}

.about-content .about-name {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.about-content .about-role {
    color: var(--accent);
    font-size: 1rem;
    font-weight: 500;
    display: block;
    margin-bottom: 18px;
}

.about-bio {
    color: var(--text-secondary);
    font-size: 0.93rem;
    line-height: 1.85;
    margin-bottom: 24px;
}

.about-bio p {
    margin-bottom: 12px;
}

.about-bio p:last-child {
    margin-bottom: 0;
}

.about-info-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
}

.about-info-table tr {
    border-bottom: 1px solid var(--border);
}

.about-info-table td {
    padding: 10px 0;
    font-size: 0.88rem;
}

.about-info-table td:first-child {
    color: var(--text-secondary);
    width: 110px;
    font-weight: 500;
}

.about-info-table td:last-child {
    color: var(--text-primary);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0a0e1a;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-download:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    color: #0a0e1a;
    text-decoration: none;
}

/* ============================================
   Services Section
   ============================================ */
.services-section {
    background: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 44px 28px;
    text-align: center;
    transition: all 0.3s;
}

.service-card:hover {
    border-color: var(--accent);
    transform: translateY(-6px);
}

.service-icon {
    width: 84px;
    height: 84px;
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 1.8rem;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.service-card:hover .service-icon {
    border-color: var(--accent);
    color: var(--accent);
}

.service-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.service-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ============================================
   Skills Section
   ============================================ */
.skills-section {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}

.skills-text h2 {
    font-size: 1.9rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.skills-text p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.85;
}

.skill-item {
    margin-bottom: 22px;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 7px;
}

.skill-name {
    font-size: 0.88rem;
    color: var(--text-primary);
    font-weight: 500;
}

.skill-percent {
    font-size: 0.82rem;
    color: var(--accent);
    font-weight: 600;
}

.skill-bar-bg {
    height: 2px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
}

.skill-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    width: 0%;
    transition: width 1.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Resume Section
   ============================================ */
.resume-section {
    background: var(--bg-primary);
}

.resume-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 18px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.resume-meta-item i {
    color: var(--accent);
    margin-right: 5px;
}

.resume-meta-sep {
    opacity: 0.4;
}

.resume-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.resume-col-title {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 36px;
}

.resume-col-title i {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.timeline-item {
    position: relative;
    padding-left: 22px;
    margin-bottom: 36px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 9px;
    height: 9px;
    border: 2px solid var(--border);
    border-radius: 50%;
    background: var(--bg-primary);
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 20px;
    width: 1px;
    bottom: -36px;
    background: var(--border);
}

.timeline-item:last-child::after {
    display: none;
}

.timeline-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 4px;
}

.timeline-period {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.timeline-org {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 8px;
}

.timeline-desc {
    font-size: 0.83rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Portfolio Section
   ============================================ */
.portfolio-section {
    background: var(--bg-secondary);
}

.portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.portfolio-filter-btn {
    padding: 7px 20px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: none;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s;
    letter-spacing: 0.5px;
}

.portfolio-filter-btn:hover,
.portfolio-filter-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* Portfolio item */
.portfolio-item {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.portfolio-item-img {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: 8px;
    background: var(--bg-card);
    cursor: pointer;
}

.portfolio-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}

.portfolio-item:hover .portfolio-item-img img {
    transform: scale(1.05);
}

.portfolio-item-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 2rem;
}

/* Overlay — показывается при наведении на десктопе */
.portfolio-item-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 14, 26, 0.82);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.portfolio-item:hover .portfolio-item-overlay {
    opacity: 1;
}

.portfolio-item-overlay h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
    line-height: 1.3;
}

.portfolio-item-overlay p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.5;
}

/* Мобильный текст — скрыт на десктопе */
.portfolio-item-info {
    display: none;
}

/* Кнопка */
.portfolio-item-btn {
    display: inline-block;
    background: var(--accent);
    color: #0a0e1a;
    padding: 9px 22px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.3px;
    align-self: flex-start;
    transition: background 0.2s, transform 0.15s;
}

.portfolio-item-btn:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    color: #0a0e1a;
    text-decoration: none;
}

/* ── Project Detail ── */
.project-detail-section {
    background: var(--bg-primary);
    min-height: 80vh;
}

.project-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.83rem;
    margin-bottom: 28px;
    transition: color 0.2s;
}

.project-back-link:hover { color: var(--accent); }

.project-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.25;
}

.project-brief {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 700px;
    margin-bottom: 18px;
}

.project-header-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 44px;
}

.btn-outline-sm {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 7px 16px;
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn-outline-sm:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.btn-accent-sm {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 7px 16px;
    border-radius: 6px;
    text-decoration: none;
    border: 1px solid var(--accent);
    color: var(--accent);
    transition: background 0.2s, color 0.2s;
}

.btn-accent-sm:hover {
    background: var(--accent);
    color: #0a0e1a;
    text-decoration: none;
}

/* Media Slider */
.project-media {
    margin-bottom: 52px;
}

.media-main {
    position: relative;
    background: transparent;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16/9;
    cursor: pointer;
}

.media-slide {
    display: none;
    width: 100%;
    height: 100%;
}

.media-slide.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.media-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.media-slide video {
    width: 100%;
    height: 100%;
    display: block;
}

.media-slide iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.media-slide-video-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.4);
    color: #fff;
    font-size: 3rem;
    pointer-events: none;
}

.media-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(10,14,26,0.75);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.8rem;
    transition: border-color 0.2s, color 0.2s;
    z-index: 2;
}

.media-arrow:hover { border-color: var(--accent); color: var(--accent); }
.media-arrow--prev { left: 12px; }
.media-arrow--next { right: 12px; }

.media-thumbs {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
}

.media-thumb {
    width: 80px;
    height: 52px;
    border-radius: 6px;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    flex-shrink: 0;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s;
}

.media-thumb.active { border-color: var(--accent); }

.media-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-thumb-icon {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Task / How it works / Solution / Result */
.project-tsr {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 52px;
}

.project-tsr-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 24px;
    display: grid;
    grid-template-columns: 44px 1fr;
    grid-template-rows: auto auto;
    column-gap: 18px;
    row-gap: 0;
    align-items: start;
}

.project-tsr-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    grid-row: 1 / 3;
    margin-top: 2px;
}

.project-tsr-icon--task     { background: rgba(240,165,0,0.12);  color: var(--accent); }
.project-tsr-icon--works    { background: rgba(160,110,255,0.12); color: #a06eff; }
.project-tsr-icon--solution { background: rgba(99,179,237,0.12); color: #63b3ed; }
.project-tsr-icon--result   { background: rgba(72,187,120,0.12); color: #48bb78; }

.project-tsr-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 6px;
    align-self: end;
}

.project-tsr-text {
    font-size: 0.86rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.project-tsr-text p {
    margin-bottom: 10px;
}

.project-tsr-text p:last-child {
    margin-bottom: 0;
}

.project-tsr-text ul,
.project-tsr-text ol {
    padding-left: 18px;
    margin-bottom: 10px;
}

.project-tsr-text li {
    margin-bottom: 4px;
}

/* Tech Stack */
.project-section-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.tech-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 52px;
}

.tech-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.82rem;
    color: var(--text-primary);
    font-weight: 500;
    transition: border-color 0.2s;
}

.tech-chip:hover { border-color: var(--accent); }

.tech-chip img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.tech-chip-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Media lightbox */
.media-lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.media-lightbox.open { display: flex; }

.media-lightbox-bg {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.93);
}

.media-lightbox-inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 92vw;
    max-height: 92vh;
}

.media-lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    font-size: 1.3rem;
    cursor: pointer;
    transition: color 0.2s;
}

.media-lightbox-close:hover { color: #fff; }

.media-lightbox-img {
    max-width: 90vw;
    max-height: 85vh;
    border-radius: 8px;
    object-fit: contain;
    display: none;
}

.media-lightbox-video {
    max-width: 90vw;
    max-height: 85vh;
    border-radius: 8px;
    display: none;
}

.media-lightbox-iframe {
    width: min(960px, 90vw);
    height: min(540px, 50.6vw);
    border-radius: 8px;
    border: none;
    display: none;
}

.media-lightbox-caption {
    margin-top: 12px;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.5);
    text-align: center;
}

/* Project back button */
.project-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.83rem;
    font-weight: 500;
    border: 1px solid var(--border);
    padding: 9px 20px;
    border-radius: 8px;
    transition: color 0.2s, border-color 0.2s;
    margin-top: 8px;
}

.project-back-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    text-decoration: none;
}

/* Pagination */
.portfolio-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 50px;
}

.page-btn {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.25s;
}

.page-btn:hover,
.page-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
    background: var(--bg-primary);
}

.contact-inner {
    max-width: 780px;
    margin: 0 auto;
    text-align: center;
}

.contact-subtitle {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    text-align: left;
}

.contact-input,
.contact-textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 40px;
    padding: 16px 28px;
    color: var(--text-primary);
    font-size: 0.92rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

.contact-textarea {
    border-radius: 22px;
    resize: vertical;
    min-height: 90px;
}

.contact-input::placeholder,
.contact-textarea::placeholder {
    color: var(--text-muted);
}

.contact-input:focus,
.contact-textarea:focus {
    border-color: var(--accent);
}

.contact-check {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    text-align: left;
}

.contact-check input[type="checkbox"] {
    width: 17px;
    height: 17px;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

.contact-check a {
    color: var(--accent);
    text-decoration: underline;
}

.btn-send {
    display: inline-block;
    background: var(--accent);
    color: #0a0e1a;
    padding: 14px 52px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    align-self: center;
    margin-top: 8px;
}

.btn-send:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(240, 165, 0, 0.3);
}

/* Alert messages */
.alert-banner {
    padding: 14px 22px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 0.88rem;
    text-align: center;
}

.alert-success {
    background: rgba(240, 165, 0, 0.12);
    border: 1px solid var(--accent);
    color: var(--accent);
}

.alert-error {
    background: rgba(220, 53, 69, 0.12);
    border: 1px solid #dc3545;
    color: #ff6b7a;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--bg-secondary);
    padding: 28px 5%;
    border-top: 1px solid var(--border);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.footer-logo:hover {
    color: var(--accent);
    text-decoration: none;
}

.footer-copyright {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-social {
    color: var(--text-muted);
    font-size: 1rem;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-social:hover {
    color: var(--accent);
}

/* ============================================
   Skill tags (for about section)
   ============================================ */
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.skill-tag {
    display: inline-block;
    padding: 5px 14px;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.skill-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================================
   Responsive
   ============================================ */
/* ============================================
   Auth pages (Login / Register)
   ============================================ */
.auth-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 5%;
    background: var(--bg-primary);
}

.auth-box {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 48px 40px;
}

.auth-header {
    text-align: center;
    margin-bottom: 36px;
}

.auth-icon {
    font-size: 2rem;
    color: var(--accent);
    display: block;
    margin-bottom: 14px;
}

.auth-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.auth-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.auth-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.auth-field label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Style all native Django form inputs */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
textarea,
select {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 0.92rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
    border-color: var(--accent);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

.auth-error {
    font-size: 0.78rem;
    color: #ff6b7a;
}

.auth-error-box {
    padding: 10px 14px;
    border: 1px solid #dc3545;
    border-radius: 8px;
    background: rgba(220, 53, 69, 0.1);
    color: #ff6b7a;
    font-size: 0.85rem;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--accent);
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ============================================
   Responsive — 1280 / 1024 / 900 / 768 / 600 / 480 / 375
   ============================================ */

/* ── 1280px: широкий планшет / небольшой десктоп ── */
@media (max-width: 1280px) {
    .hero-inner { gap: 40px; }
    .about-grid { grid-template-columns: 340px 1fr; gap: 48px; }
}

/* ── 1024px: ландшафтный планшет ── */
@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 280px 1fr; gap: 36px; }
    .skills-grid { gap: 50px; }
    .resume-grid { gap: 40px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); }

    .section-heading { margin-bottom: 50px; }
}

/* ── 900px: портретный планшет ── */
@media (max-width: 900px) {
    .site-section { padding: 80px 5%; }

    /* Hero */
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 36px;
        padding-top: 30px;
        padding-bottom: 40px;
        min-height: auto;
    }
    .hero-photo-wrapper {
        justify-content: center;
        min-height: auto;
        order: -1;
    }
    .hero-photo, .hero-photo-placeholder {
        max-width: 260px;
        height: 330px;
    }
    .hero-socials { justify-content: center; }

    /* About */
    .about-grid { grid-template-columns: 1fr; gap: 36px; }
    .about-photo {
        max-width: 100%;
        width: 100%;
        height: auto;
        aspect-ratio: unset;
        object-fit: contain;
        object-position: center top;
    }
    .about-photo-placeholder {
        max-width: 100%;
        aspect-ratio: 4/3;
    }

    /* Skills */
    .skills-grid { grid-template-columns: 1fr; gap: 36px; }

    /* Resume */
    .resume-grid { grid-template-columns: 1fr; gap: 0; }
    .resume-col { margin-bottom: 40px; }

    /* Certificates slider */
    .certs-slider-wrapper { padding: 30px 130px 50px; }
    .certs-stack { width: 300px; height: 235px; }
    .cert-img, .cert-placeholder { height: 163px; }
}

/* ── 768px: мобильный ── */
@media (max-width: 768px) {
    :root { --nav-height: 60px; }

    .site-section { padding: 70px 4%; }
    .section-heading { margin-bottom: 42px; }

    /* Navbar → бургер */
    .site-nav {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0; right: 0;
        background: rgba(10, 14, 26, 0.99);
        flex-direction: column;
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    }
    .site-nav.open { display: flex; }
    .site-nav li {
        width: 100%;
        list-style: none;
    }
    .site-nav a {
        padding: 14px 5%;
        font-size: 0.9rem;
        text-align: center;
        white-space: nowrap;
        border-bottom: 1px solid rgba(30, 45, 86, 0.4);
    }
    .site-nav li:last-child a { border-bottom: none; }
    .header-phone { display: none; }
    .nav-toggle { display: flex; }

    /* Hero */
    .hero-section { padding-bottom: 50px; }
    .hero-content .hero-greeting { font-size: 0.95rem; }
    .hero-content .hero-role { font-size: 0.95rem; margin-bottom: 28px; }
    .hero-socials { margin-top: 28px; }

    /* About */
    .about-content .about-name { font-size: 1.5rem; }
    .about-info-table td { font-size: 0.84rem; padding: 8px 0; }

    /* Services */
    .services-grid { grid-template-columns: 1fr; gap: 16px; }
    .service-card { padding: 32px 24px; }

    /* Skills */
    .skills-text h2 { font-size: 1.6rem; }

    /* Resume */
    .resume-col-title { font-size: 1.25rem; margin-bottom: 24px; }

    /* Portfolio */


    /* Contact */
    .contact-subtitle { font-size: 1.55rem; }
    .contact-input, .contact-textarea { padding: 13px 22px; font-size: 0.88rem; }

    /* Footer */
    .footer-inner { flex-direction: column; align-items: center; text-align: center; gap: 20px; }
    .footer-copy { font-size: 0.8rem; }

    /* Certificates slider */
    .certs-slider-wrapper { padding: 30px 110px 48px; }
    .certs-stack { width: 270px; height: 215px; }
    .cert-img, .cert-placeholder { height: 148px; }
    .certs-arrow { width: 40px; height: 40px; }
}

/* ── 600px: большой смартфон (ландшафт / крупный портрет) ── */
@media (max-width: 600px) {
    .site-section { padding: 60px 4%; }
    .section-heading { margin-bottom: 36px; }

    /* Hero */
    .hero-photo, .hero-photo-placeholder { max-width: 220px; height: 280px; }

    /* Services */
    .service-card { padding: 28px 20px; }
    .service-icon { width: 70px; height: 70px; font-size: 1.5rem; margin-bottom: 18px; }

    /* Portfolio */
    .portfolio-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
    .portfolio-item-overlay { display: none; }
    .portfolio-item-info {
        display: block;
    }
    .portfolio-item-info h3 {
        font-size: 0.88rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 4px;
        line-height: 1.3;
    }
    .portfolio-item-info p {
        font-size: 0.76rem;
        color: var(--text-secondary);
        line-height: 1.5;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .media-thumb { width: 64px; height: 44px; }
    .project-title { font-size: 1.4rem; }

    /* Auth */
    .auth-box { padding: 36px 28px; }

    /* Certificates slider */
    .certs-slider-wrapper { padding: 24px 96px 42px; }
    .certs-stack { width: 240px; height: 195px; }
    .cert-img, .cert-placeholder { height: 132px; }
    .cert-card.cert-right { transform: translateX(58%) translateY(5%) rotate(8deg) scale(0.88); }
    .cert-card.cert-left  { transform: translateX(-58%) translateY(5%) rotate(-8deg) scale(0.88); }
}

/* ── 480px: стандартный смартфон ── */
@media (max-width: 480px) {
    .site-section { padding: 55px 4%; }

    /* Hero */
    .hero-content .hero-name { font-size: clamp(2rem, 10vw, 2.8rem); }
    .hero-photo, .hero-photo-placeholder { max-width: 200px; height: 255px; }
    .btn-hire { padding: 12px 28px; font-size: 0.9rem; }

    /* About */
    .about-content .about-name { font-size: 1.35rem; }
    .about-info-table td:first-child { width: 90px; }

    /* Skills */
    .skills-text h2 { font-size: 1.4rem; }

    /* Resume */
    .resume-col-title { font-size: 1.15rem; }

    /* Contact */
    .contact-subtitle { font-size: 1.35rem; margin-bottom: 28px; }
    .btn-send { padding: 13px 36px; }

    /* Certificates slider */
    .certs-slider-wrapper { padding: 20px 84px 38px; }
    .certs-stack { width: 210px; height: 178px; }
    .cert-img, .cert-placeholder { height: 115px; }
    .cert-info { padding: 8px 10px; }
    .cert-name { font-size: 0.78rem; }
    .cert-meta { font-size: 0.7rem; }
    .certs-arrow { width: 36px; height: 36px; font-size: 0.85rem; }

    /* Lightbox */
    .cert-lightbox-meta { padding: 18px 20px 22px; }
    .cert-lightbox-meta h3 { font-size: 1.05rem; }
}

/* ── 375px: маленький смартфон (iPhone SE и т.п.) ── */
@media (max-width: 375px) {
    :root { --nav-height: 56px; }

    .site-section { padding: 50px 4%; }
    .logo-img { max-width: 110px; }

    /* Hero */
    .hero-content .hero-name { font-size: clamp(1.8rem, 11vw, 2.4rem); }
    .hero-photo, .hero-photo-placeholder { max-width: 175px; height: 225px; }

    /* Services */
    .service-card { padding: 24px 16px; }

    /* About info table */
    .about-info-table td:first-child { width: 80px; font-size: 0.8rem; }
    .about-info-table td:last-child { font-size: 0.8rem; }

    /* Contact */
    .contact-subtitle { font-size: 1.2rem; }
    .contact-input, .contact-textarea { padding: 12px 18px; font-size: 0.85rem; }

    /* Certificates slider */
    .certs-slider-wrapper { padding: 16px 70px 34px; }
    .certs-stack { width: 185px; height: 162px; }
    .cert-img, .cert-placeholder { height: 100px; }
    .certs-arrow { width: 30px; height: 30px; font-size: 0.75rem; }
    .cert-card.cert-right { transform: translateX(55%) translateY(4%) rotate(7deg) scale(0.87); }
    .cert-card.cert-left  { transform: translateX(-55%) translateY(4%) rotate(-7deg) scale(0.87); }
}

/* ============================================
   Certificate Slider
   ============================================ */
.certs-section {
    background: var(--bg-secondary);
}

.certs-slider-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* боковые карточки выглядывают на ~1/3 ширины (≈113px) + отступ под стрелки */
    padding: 40px 180px 60px;
}

/* Arrow buttons */
.certs-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s, color 0.3s;
    z-index: 10;
}
.certs-arrow:hover {
    background: var(--accent);
    color: #000;
}
.certs-arrow--prev { left: 0; }
.certs-arrow--next { right: 0; }

/* Stack container — overflow:visible чтобы боковые карточки выглядывали */
.certs-stack {
    position: relative;
    width: 340px;
    height: 260px;
    margin-bottom: 32px;
    overflow: visible;
}

/* Base card */
.cert-card {
    position: absolute;
    inset: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.5s ease,
                box-shadow 0.5s ease;
    will-change: transform, opacity;
}

/* Active (front) card */
.cert-card.cert-active {
    transform: translateX(0) translateY(0) rotate(0deg) scale(1);
    opacity: 1;
    z-index: 4;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(240,165,0,0.3);
}

/* Карточка справа — 2/3 скрыта под основной, 1/3 выглядывает справа */
.cert-card.cert-right {
    transform: translateX(63%) translateY(5%) rotate(8deg) scale(0.9);
    opacity: 0.8;
    z-index: 2;
}

/* Карточка слева — 2/3 скрыта под основной, 1/3 выглядывает слева */
.cert-card.cert-left {
    transform: translateX(-63%) translateY(5%) rotate(-8deg) scale(0.9);
    opacity: 0.8;
    z-index: 2;
}

/* Все остальные — полностью за основной */
.cert-card.cert-behind {
    transform: translateX(0) translateY(0) scale(0.84);
    opacity: 0;
    z-index: 1;
}

/* Card hover (only active) */
.cert-card.cert-active:hover {
    box-shadow: 0 28px 70px rgba(0,0,0,0.7), 0 0 0 2px var(--accent);
    transform: translateX(0) translateY(-4px) rotate(0deg) scale(1);
}

/* Certificate image */
.cert-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

/* Placeholder (no image) */
.cert-placeholder {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, #0f1629 0%, #1a2040 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--accent);
}
.cert-placeholder i {
    font-size: 2.5rem;
    opacity: 0.7;
}
.cert-placeholder span {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
    padding: 0 12px;
    max-width: 200px;
}

/* Card info bar */
.cert-info {
    padding: 12px 14px;
}
.cert-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.cert-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Hover hint icon */
.cert-hover-hint {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    background: rgba(240, 165, 0, 0.15);
    border: 1px solid rgba(240, 165, 0, 0.3);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity 0.3s;
}
.cert-card.cert-active:hover .cert-hover-hint {
    opacity: 1;
}

/* Navigation dots */
.certs-dots {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}
.cert-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    border: none;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    padding: 0;
}
.cert-dot.active {
    background: var(--accent);
    transform: scale(1.3);
}

/* ---- Lightbox ---- */
.cert-lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s, visibility 0.3s;
}
.cert-lightbox.open {
    visibility: visible;
    opacity: 1;
}

.cert-lightbox-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(4px);
}

.cert-lightbox-content {
    position: relative;
    z-index: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    max-width: 700px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 40px 100px rgba(0,0,0,0.8);
    animation: lbIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes lbIn {
    from { transform: scale(0.85); opacity: 0; }
    to   { transform: scale(1);    opacity: 1; }
}

.cert-lightbox-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
    background: rgba(240, 165, 0, 0.1);
    border: 1px solid rgba(240, 165, 0, 0.3);
    border-radius: 8px;
    color: var(--accent);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 2;
}
.cert-lightbox-close:hover {
    background: var(--accent);
    color: #000;
}

.cert-lightbox-img {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
    display: block;
    border-radius: 12px 12px 0 0;
}

.cert-lightbox-placeholder {
    width: 100%;
    height: 280px;
    background: linear-gradient(135deg, #0f1629 0%, #1a2040 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 5rem;
    border-radius: 12px 12px 0 0;
}

.cert-lightbox-meta {
    padding: 24px 28px 28px;
    text-align: center;
}
.cert-lightbox-meta h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}
.cert-lightbox-meta p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive cert slider */
@media (max-width: 768px) {
    .certs-slider-wrapper { padding: 30px 130px 50px; }
    .certs-stack { width: 280px; height: 220px; }
    .cert-img, .cert-placeholder { height: 150px; }
}

@media (max-width: 480px) {
    .certs-slider-wrapper { padding: 20px 100px 40px; }
    .certs-stack { width: 220px; height: 190px; }
    .cert-img, .cert-placeholder { height: 120px; }
    .certs-arrow { width: 36px; height: 36px; font-size: 0.85rem; }
}