:root {
    color-scheme: dark;
    --page-bg: #070b12;
    --page-surface: rgba(15, 22, 35, 0.86);
    --page-surface-strong: rgba(18, 27, 43, 0.96);
    --page-text: #edf2ff;
    --page-muted: #aab6cf;
    --page-soft: #7f8aa3;
    --page-border: rgba(148, 163, 184, 0.18);
    --page-border-strong: rgba(148, 163, 184, 0.28);
    --page-primary: #8dd6ff;
    --page-primary-strong: #56c0ff;
    --page-accent: #8cf0d3;
    --page-shadow: 0 24px 80px rgba(2, 6, 23, 0.34);
    --page-shadow-soft: 0 16px 34px rgba(2, 6, 23, 0.18);
    --page-radius-xl: 28px;
    --page-radius-lg: 22px;
    --page-radius-md: 16px;
    --page-section: clamp(5rem, 8vw, 8rem);
}

html.theme-light {
    color-scheme: light;
    --page-bg: #f4f7fb;
    --page-surface: rgba(255, 255, 255, 0.9);
    --page-surface-strong: rgba(255, 255, 255, 0.98);
    --page-text: #0f172a;
    --page-muted: #475569;
    --page-soft: #64748b;
    --page-border: rgba(15, 23, 42, 0.1);
    --page-border-strong: rgba(15, 23, 42, 0.16);
    --page-primary: #0f172a;
    --page-primary-strong: #1f2937;
    --page-accent: #0f766e;
    --page-shadow: 0 24px 80px rgba(15, 23, 42, 0.1);
    --page-shadow-soft: 0 16px 34px rgba(15, 23, 42, 0.08);
}

html {
    scroll-behavior: smooth;
}

body {
    background:
        radial-gradient(circle at top left, rgba(141, 214, 255, 0.11), transparent 26%),
        radial-gradient(circle at top right, rgba(140, 240, 211, 0.08), transparent 22%),
        var(--page-bg);
    color: var(--page-text);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 72px 72px;
    opacity: 0.28;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.38), transparent 86%);
}

.container {
    width: min(1200px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 0;
}

.section {
    padding: var(--page-section) 0;
    scroll-margin-top: 110px;
}

.section h2,
.section-heading h2 {
    font-size: clamp(2rem, 3vw, 2.85rem);
    line-height: 1.08;
    letter-spacing: -0.04em;
    margin-bottom: 0.85rem;
}

.section-heading {
    max-width: 720px;
    margin-bottom: clamp(1.5rem, 4vw, 3rem);
}

.section-heading p {
    color: var(--page-muted);
    max-width: 64ch;
    font-size: 1.02rem;
}

.section-kicker,
.hero-eyebrow,
.hero-panel-label,
.project-domain {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    width: fit-content;
    padding: 0.42rem 0.8rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--page-surface) 88%, transparent);
    border: 1px solid var(--page-border);
    color: var(--page-muted);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -100px;
    z-index: 2000;
    padding: 0.85rem 1.1rem;
    border-radius: 999px;
    background: var(--page-surface-strong);
    color: var(--page-text);
    border: 1px solid var(--page-border-strong);
    box-shadow: var(--page-shadow-soft);
    transition: top 180ms ease;
}

.skip-link:focus {
    top: 1rem;
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1900;
    width: 100%;
    height: 3px;
    background: transparent;
}

.scroll-progress__bar {
    display: block;
    width: 100%;
    height: 100%;
    transform-origin: left center;
    transform: scaleX(0);
    background: linear-gradient(90deg, var(--page-primary), var(--page-accent));
    box-shadow: 0 0 20px rgba(141, 214, 255, 0.42);
}

header {
    position: sticky;
    top: 0;
    z-index: 1500;
    backdrop-filter: blur(18px);
    background: color-mix(in srgb, var(--page-bg) 78%, transparent);
    border-bottom: 1px solid var(--page-border);
    box-shadow: 0 10px 40px rgba(2, 6, 23, 0.14);
}

.navbar {
    padding: 0.9rem 0;
}

.nav-container {
    width: min(1200px, calc(100% - 2rem));
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
}

.brand-logo {
    display: block;
    width: auto;
    height: 56px;
    object-fit: contain;
    filter: drop-shadow(0 8px 22px rgba(2, 6, 23, 0.2));
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    list-style: none;
    margin-left: auto;
    padding: 0.35rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--page-surface) 80%, transparent);
    border: 1px solid var(--page-border);
}

.nav-menu a,
.footer-link,
.lang-btn,
.theme-btn,
.project-link-primary,
.project-link-secondary,
.education-cv-link,
.cta-button,
.contact-form button,
.modal-close,
.back-to-top,
.hamburger {
    transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.nav-menu a {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: 999px;
    color: var(--page-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
    color: var(--page-text);
    background: color-mix(in srgb, var(--page-surface-strong) 80%, transparent);
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin-left: 0.25rem;
}

.lang-btn,
.theme-btn {
    min-height: 42px;
    min-width: 42px;
    border: 1px solid var(--page-border);
    border-radius: 999px;
    background: color-mix(in srgb, var(--page-surface) 84%, transparent);
    color: var(--page-muted);
    font-weight: 700;
}

.lang-btn {
    padding: 0.65rem 0.85rem;
}

.theme-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem;
}

.lang-btn:hover,
.theme-btn:hover,
.lang-btn:focus-visible,
.theme-btn:focus-visible {
    border-color: var(--page-border-strong);
    color: var(--page-text);
    box-shadow: var(--page-shadow-soft);
    transform: translateY(-1px);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--page-primary), var(--page-accent));
    color: #07111b;
    border-color: transparent;
    box-shadow: 0 14px 28px rgba(141, 214, 255, 0.2);
}

.theme-btn .theme-icon {
    width: 18px;
    height: 18px;
    display: block;
}

.hamburger {
    display: none;
    width: 46px;
    height: 46px;
    padding: 0.8rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--page-surface) 84%, transparent);
    border: 1px solid var(--page-border);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    margin-left: auto;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 2px !important;
    min-height: 2px;
    flex: 0 0 2px;
    border-radius: 999px;
    background: var(--page-text) !important;
    opacity: 1;
    transform-origin: center;
    transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
    height: auto;
    min-height: calc(100svh - 92px);
    display: flex;
    align-items: center;
    text-align: left;
    padding-top: clamp(2rem, 5vw, 5rem);
    padding-bottom: clamp(4rem, 7vw, 6rem);
}

.hero::after {
    content: '';
    position: absolute;
    inset: auto 0 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(141, 214, 255, 0.4), transparent);
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    align-items: center;
    gap: clamp(2rem, 4vw, 4rem);
}

.hero-copy h1 {
    margin: 1rem 0 1rem;
    font-size: clamp(2.8rem, 7vw, 5.8rem);
    line-height: 0.95;
    letter-spacing: -0.06em;
    max-width: 11ch;
}

.hero-subtitle {
    max-width: 58ch;
    color: var(--page-muted);
    font-size: clamp(1.02rem, 1.6vw, 1.2rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin: 2rem 0 1.5rem;
}

.cta-button,
.project-link-primary,
.project-link-secondary,
.education-cv-link,
.contact-form button,
.back-to-top {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.cta-button {
    min-height: 48px;
    padding: 0.95rem 1.35rem;
}

.cta-button--primary,
.project-link-primary,
.education-cv-link,
.contact-form button {
    background: linear-gradient(135deg, var(--page-primary), var(--page-accent));
    color: #07111b;
    box-shadow: 0 18px 32px rgba(141, 214, 255, 0.16);
}

.cta-button--ghost,
.project-link-secondary,
.footer-link,
.back-to-top {
    background: color-mix(in srgb, var(--page-surface) 84%, transparent);
    border-color: var(--page-border);
    color: var(--page-text);
}

.cta-button:hover,
.project-link-primary:hover,
.project-link-secondary:hover,
.education-cv-link:hover,
.contact-form button:hover,
.footer-link:hover,
.back-to-top:hover,
.cta-button:focus-visible,
.project-link-primary:focus-visible,
.project-link-secondary:focus-visible,
.education-cv-link:focus-visible,
.contact-form button:focus-visible,
.footer-link:focus-visible,
.back-to-top:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 20px 36px rgba(2, 6, 23, 0.18);
}

.hero-highlights {
    list-style: none;
    display: grid;
    gap: 0.75rem;
    margin: 0;
    padding: 0;
}

.hero-highlights li {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 0.95rem 1rem;
    border-radius: var(--page-radius-md);
    border: 1px solid var(--page-border);
    background: color-mix(in srgb, var(--page-surface) 86%, transparent);
    color: var(--page-muted);
    box-shadow: var(--page-shadow-soft);
}

.hero-highlight-label {
    flex: 0 0 auto;
    width: 3rem;
    text-align: center;
    padding: 0.25rem 0.45rem;
    border-radius: 999px;
    background: rgba(141, 214, 255, 0.12);
    color: var(--page-primary);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-panel-card,
.tech-item,
.project-card,
.contact-form-card,
.contact-item,
.education-entry,
.modal-content {
    border: 1px solid var(--page-border);
    background: color-mix(in srgb, var(--page-surface-strong) 94%, transparent);
    box-shadow: var(--page-shadow);
    backdrop-filter: blur(18px);
}

.hero-panel-card {
    border-radius: var(--page-radius-xl);
    padding: clamp(1.35rem, 3vw, 2rem);
}

.hero-panel-card h2 {
    margin: 0.95rem 0 0.85rem;
    font-size: clamp(1.45rem, 2vw, 2rem);
    line-height: 1.1;
}

.hero-panel-card p,
.about-content p,
.contact-info p,
.contact-form-note,
.project-card p,
.education-entry-meta,
.education-entry-note,
.modal-body p,
.timeline-content p,
.timeline-content li,
footer p {
    color: var(--page-muted);
}

.hero-skill-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
    margin-top: 1.25rem;
}

.hero-skill-grid > div {
    padding: 0.95rem;
    border-radius: var(--page-radius-md);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
    border: 1px solid var(--page-border);
}

.hero-skill-grid span {
    display: block;
    color: var(--page-soft);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.3rem;
}

.hero-skill-grid strong {
    color: var(--page-text);
    font-size: 0.98rem;
}

.about-content,
.education-simple,
.contact-content {
    display: grid;
    gap: 1.2rem;
}

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

.tech-grid,
.projects-grid {
    display: grid;
    gap: 1.25rem;
}

.tech-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.tech-item,
.project-card,
.contact-form-card,
.contact-item,
.education-entry {
    border-radius: var(--page-radius-xl);
}

.tech-item {
    padding: 1.3rem;
}

.tech-item-header {
    margin-bottom: 1rem;
}

.tech-item-header h3,
.project-card h3,
.contact-form-card h3,
.contact-item h3,
.education-simple-title,
.education-entry h4 {
    margin-bottom: 0.35rem;
    color: var(--page-text);
}

.tech-item-header p,
.project-scope,
.contact-form-note {
    font-size: 0.95rem;
}

.tech-logo-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.tech-logo-chip,
.project-tech-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 1rem;
    border: 1px solid var(--page-border);
    background: rgba(255, 255, 255, 0.04);
    box-shadow: var(--page-shadow-soft);
    overflow: hidden;
}

.tech-logo-chip img,
.project-tech-icon img {
    width: 60%;
    height: 60%;
    object-fit: contain;
}

.tech-logo-chip::after {
    content: attr(data-tech-name);
    position: absolute;
    left: 50%;
    bottom: calc(100% + 0.55rem);
    transform: translateX(-50%) translateY(8px);
    opacity: 0;
    pointer-events: none;
    white-space: nowrap;
    padding: 0.45rem 0.7rem;
    border-radius: 0.85rem;
    background: var(--page-surface-strong);
    color: var(--page-text);
    border: 1px solid var(--page-border-strong);
    font-size: 0.78rem;
    font-weight: 700;
    box-shadow: var(--page-shadow-soft);
    transition: opacity 180ms ease, transform 180ms ease;
}

.tech-logo-chip:hover,
.tech-logo-chip:focus-visible {
    transform: translateY(-3px) scale(1.04);
    border-color: var(--page-border-strong);
}

.tech-logo-chip:hover::after,
.tech-logo-chip:focus-visible::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.projects-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.3rem;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top, rgba(141, 214, 255, 0.12), transparent 46%);
    opacity: 0;
    transition: opacity 220ms ease;
    pointer-events: none;
}

.project-card:hover::before,
.project-card:focus-within::before {
    opacity: 1;
}

.project-domain {
    margin-bottom: 0;
}

.project-scope {
    color: var(--page-muted);
    margin-top: -0.35rem;
}

.project-stage,
.project-gallery {
    position: relative;
}

.project-stage {
    min-height: 210px;
    border-radius: 22px;
    border: 1px solid var(--page-border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-monitor {
    position: relative;
    width: 100%;
    max-width: 300px;
    height: 170px;
    filter: drop-shadow(0 28px 50px rgba(2, 6, 23, 0.25));
}

.project-screen {
    position: relative;
    width: 100%;
    height: 148px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: linear-gradient(160deg, rgba(141, 214, 255, 0.18), rgba(140, 240, 211, 0.1));
    overflow: hidden;
}

.project-screen-topbar {
    height: 12px;
    background: rgba(255, 255, 255, 0.14);
}

.project-screen-content {
    position: absolute;
    inset: 16px;
    border-radius: 14px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 40%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent),
        rgba(7, 17, 27, 0.32);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.project-monitor-stand {
    width: 36%;
    height: 16px;
    margin: -2px auto 0;
    border-radius: 0 0 12px 12px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.05));
}

.project-laser,
.project-pulse {
    position: absolute;
    border-radius: 999px;
    pointer-events: none;
}

.project-laser {
    inset: auto -10% 14% auto;
    width: 70%;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(141, 214, 255, 0.7), transparent);
    opacity: 0.55;
}

.project-pulse {
    inset: auto auto 16% 12%;
    width: 54px;
    height: 54px;
    background: radial-gradient(circle, rgba(140, 240, 211, 0.18), transparent 70%);
    filter: blur(2px);
}

.project-gallery {
    display: grid;
    grid-template-columns: 1.1fr 0.8fr 0.7fr;
    gap: 0.6rem;
}

.project-gallery-item {
    display: block;
    min-height: 72px;
    border-radius: 18px;
    border: 1px solid var(--page-border);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.project-gallery-item--large {
    min-height: 92px;
    background:
        linear-gradient(135deg, rgba(141, 214, 255, 0.18), rgba(7, 17, 27, 0.12)),
        linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent);
}

.project-gallery-item--small {
    background: linear-gradient(135deg, rgba(140, 240, 211, 0.16), rgba(255, 255, 255, 0.02));
}

.project-gallery-item--accent {
    background: linear-gradient(135deg, rgba(255, 208, 138, 0.18), rgba(255, 255, 255, 0.03));
}

.project-highlights {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.55rem;
}

.project-highlights li {
    position: relative;
    padding-left: 1rem;
    color: var(--page-muted);
}

.project-highlights li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 0.42rem;
    height: 0.42rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--page-primary), var(--page-accent));
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    align-items: center;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: auto;
}

.project-link-primary,
.project-link-secondary,
.education-cv-link {
    min-height: 44px;
    padding: 0.85rem 1.1rem;
}

.contact-content {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
}

.contact-details {
    display: grid;
    gap: 0.9rem;
}

.contact-item {
    padding: 1rem 1.1rem;
}

.contact-item a {
    color: var(--page-muted);
    text-decoration: none;
    word-break: break-word;
}

.contact-item a:hover,
.contact-item a:focus-visible,
.footer-link:hover,
.footer-link:focus-visible {
    color: var(--page-text);
}

.contact-form-card {
    padding: 1.3rem;
}

.contact-form {
    display: grid;
    gap: 0.85rem;
}

.contact-form label {
    color: var(--page-text);
    font-size: 0.92rem;
    font-weight: 700;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    min-height: 48px;
    padding: 0.9rem 1rem;
    border-radius: 16px;
    border: 1px solid var(--page-border);
    background: color-mix(in srgb, var(--page-surface) 90%, transparent);
    color: var(--page-text);
    outline: none;
}

.contact-form textarea {
    min-height: 148px;
    resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--page-soft);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: color-mix(in srgb, var(--page-primary) 55%, var(--page-border-strong));
    box-shadow: 0 0 0 4px rgba(141, 214, 255, 0.12);
}

.contact-form button {
    min-height: 50px;
    padding: 0.95rem 1.2rem;
    margin-top: 0.25rem;
    position: relative;
}

.contact-form button.is-loading {
    cursor: progress;
}

.submit-button__label {
    display: inline-flex;
}

.submit-button__spinner {
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 999px;
    border: 2px solid rgba(7, 17, 27, 0.22);
    border-top-color: rgba(7, 17, 27, 0.92);
    animation: spin 750ms linear infinite;
}

.contact-form button:not(.is-loading) .submit-button__spinner {
    display: none;
}

.contact-form-status {
    min-height: 1.5rem;
    padding-top: 0.25rem;
    font-size: 0.95rem;
}

.contact-form-status.success {
    color: #4ade80;
}

.contact-form-status.error {
    color: #fca5a5;
}

.contact-honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
}

.education-simple {
    max-width: 980px;
}

.education-simple-title {
    font-size: 1.15rem;
}

.education-simple-list {
    position: relative;
    display: grid;
    gap: 1rem;
    padding-left: 1.25rem;
}

.education-simple-list::before {
    content: '';
    position: absolute;
    left: 0.55rem;
    top: 0.25rem;
    bottom: 0.25rem;
    width: 2px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--page-primary), var(--page-accent));
}

.education-entry {
    position: relative;
    padding: 1.1rem 1.15rem 1.1rem 1.4rem;
}

.education-entry::before {
    content: '';
    position: absolute;
    left: -1.55rem;
    top: 1.35rem;
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 999px;
    background: var(--page-bg);
    border: 2px solid var(--page-primary);
    box-shadow: 0 0 0 6px rgba(141, 214, 255, 0.08);
}

.education-entry h4 {
    font-size: 1.05rem;
}

.education-entry-meta {
    margin-top: 0.45rem;
}

.education-school {
    color: var(--page-text);
    font-weight: 700;
}

.education-entry-note {
    margin-top: 0.35rem;
    font-size: 0.92rem;
}

.education-cv-download {
    margin-top: 0.5rem;
}

footer {
    padding: 1.3rem 0 2rem;
    border-top: 1px solid var(--page-border);
    background: color-mix(in srgb, var(--page-bg) 86%, transparent);
}

footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-link {
    padding: 0.75rem 1rem;
}

.modal {
    display: none;
}

.modal.is-open {
    display: block;
}

.modal-backdrop {
    background: rgba(2, 6, 23, 0.62);
    backdrop-filter: blur(8px);
}

.modal-content {
    color: var(--page-text);
    border-radius: var(--page-radius-xl);
    padding: 1.35rem;
    max-height: min(80vh, 900px);
    overflow: auto;
}

.modal-close {
    width: 42px;
    height: 42px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--page-surface) 84%, transparent);
    border: 1px solid var(--page-border);
    color: var(--page-text);
}

.modal-close:hover,
.modal-close:focus-visible {
    border-color: var(--page-border-strong);
}

.back-to-top {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 1400;
    width: 48px;
    height: 48px;
    box-shadow: var(--page-shadow-soft);
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 520ms ease, transform 520ms ease;
    transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 1200px) {
    .projects-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 1024px) {
    .hero-layout {
        grid-template-columns: 1fr;
    }

    .hero-copy h1 {
        max-width: 100%;
    }

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

@media (max-width: 900px) {
    .nav-container {
        gap: 0.75rem;
    }

    .nav-menu {
        display: none;
        position: fixed;
        left: 1rem;
        right: 1rem;
        top: 84px;
        z-index: 1800;
        flex-direction: column;
        align-items: stretch;
        padding: 0.75rem;
        border-radius: 24px;
        background: var(--page-surface-strong);
        border: 1px solid var(--page-border);
        box-shadow: var(--page-shadow);
    }

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

    .nav-menu a {
        width: 100%;
        justify-content: flex-start;
        padding: 0.9rem 1rem;
    }

    .hamburger {
        display: inline-flex;
    }

    .language-switcher {
        margin-left: auto;
    }

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

@media (max-width: 640px) {
    .section {
        padding: 4.25rem 0;
    }

    .hero {
        min-height: auto;
        padding-top: 4rem;
        padding-bottom: 4rem;
    }

    .hero-copy h1 {
        font-size: clamp(2.4rem, 14vw, 3.6rem);
    }

    .hero-skill-grid {
        grid-template-columns: 1fr;
    }

    .hero-actions,
    .project-links {
        width: 100%;
    }

    .cta-button,
    .project-link-primary,
    .project-link-secondary,
    .education-cv-link,
    .contact-form button {
        width: 100%;
    }

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

    .tech-logo-chip,
    .project-tech-icon {
        width: 3.5rem;
        height: 3.5rem;
    }

    footer .container {
        flex-direction: column;
        align-items: flex-start;
    }

    .back-to-top {
        right: 0.75rem;
        bottom: 0.75rem;
    }
}

@media (max-width: 480px) {
    .container {
        width: min(100%, calc(100% - 1.25rem));
    }

    .nav-container {
        width: min(100%, calc(100% - 1.25rem));
    }

    .language-switcher {
        gap: 0.3rem;
    }

    .lang-btn,
    .theme-btn {
        min-height: 40px;
    }

    .tech-item,
    .project-card,
    .contact-form-card,
    .contact-item,
    .education-entry,
    .modal-content {
        border-radius: 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
        scroll-behavior: auto !important;
    }
}