/*CSS RESET*/

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
}

html,
body {
    height: 100%;
}

body {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
}

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

ul,
ol {
    list-style: none;
    padding: 0;
}

/*DESIGN TOKENS*/

:root {
    --font-base: "Inter", Arial, Helvetica, sans-serif;
    --font-accent: "Caveat", "Segoe Script", cursive;
    --container-width: 1200px;
    --container-padding: 24px;
    --radius-sm: 14px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-pill: 999px;
    --duration-fast: 0.18s;
    --duration-base: 0.28s;
    --shadow-soft: 0 20px 60px rgba(0,0,0,0.18);
    --shadow-card: 0 18px 40px rgba(0,0,0,0.16);
    --color-bg: #f3f6fb;
    --color-surface: #ffffff;
    --color-surface-strong: #eef3f9;
    --color-text: #101722;
    --color-text-muted: #5b6575;
    --color-border: rgba(16,23,34,0.1);
    --color-accent: #6f7cff;
    --color-accent-strong: #5362ff;
}

/*DARK THEME*/

html.theme-dark {
    --color-bg: #2B2B2B;
    --color-surface: #0c1828;
    --color-surface-strong: #132235;
    --color-text: #f5f7fb;
    --color-text-muted: #9ca8ba;
    --color-border: rgba(255,255,255,0.08);
    --color-accent: #8a9bff;
}

/*BASE*/

html {
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
}

body {
    font-family: var(--font-base), serif;
    line-height: 1.6;
    color: var(--color-text);
    background:
            radial-gradient(circle at top left, rgba(111,124,255,0.12), transparent 30%),
            var(--color-bg);
    transition:
            background-color var(--duration-base),
            color var(--duration-base);
}

body.menu-open {
    overflow: hidden;
}

/*LAYOUT*/

.section {
    width: min(100%, var(--container-width));
    margin: 0 auto;
    padding-inline: var(--container-padding);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
}

/*MOBILE MENU*/

.mobile-menu {
    display: none;
}

.mobile-menu.is-open {
    display: block;
}

.mobile-menu-inner {
    padding: 16px 0;
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.mobile-menu-link {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-pill);
    color: var(--color-text-muted);
    transition: background var(--duration-fast), color var(--duration-fast);
}

.mobile-menu-link:hover {
    background: var(--color-surface-strong);
    color: var(--color-text);
}

.mobile-menu-controls {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}

.control-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 72px;
    height: 42px;
    padding: 0 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition:
            background-color var(--duration-fast) ease,
            border-color var(--duration-fast) ease,
            transform var(--duration-fast) ease;
}

.control-button:hover,
.control-button:focus-visible {
    background: var(--color-surface-strong);
}

.burger {
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin-left: auto;
    gap: 4px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-surface);
}

.burger-line {
    width: 18px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
}

@media (max-width: 860px) {
    .main-nav {
        display: none;
    }

    .burger {
        display: inline-flex;
    }
}

/*HEADER*/

.header {
    position: sticky;
    top: 0;
    z-index: 50;
    padding-top: 16px;
    transition: transform var(--duration-base) ease, opacity var(--duration-base) ease;
}

.header.is-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

.header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.site-header-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

/*LOGO*/

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    font-weight: 700;
}

.logo-name {
    font-family: var(--font-accent), cursive;
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}

/*NAVIGATION*/

.main-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.main-nav-link {
    padding: 10px 14px;
    border-radius: var(--radius-pill);
    color: var(--color-text-muted);
    transition: background var(--duration-fast);
}

.main-nav-link:hover {
    background: var(--color-surface-strong);
    color: var(--color-text);
}

/*SECTION*/

.section-grid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    width: 100%;
}

.grid-stretch {
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.section-header {
    font-size: clamp(1.8rem, 2.6vw, 2.8rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
    margin-bottom: 24px;
}

.section-title {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.section-text {
    font-size: 1rem;
    line-height: 1.6;
    max-width: 60ch;
}

.section-text ul {
    list-style: disc;
    padding-left: 20px;
    margin: 8px 0 16px;
}

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

.section-text strong {
    display: inline-block;
    margin: 12px 0 6px;
}

.text-center {
    text-align: center;
}

/*SECTION-IMAGE*/

.section-image {
    min-height: 50vh;
    display: flex;
    align-items: center;
    width: min(100%, var(--container-width));
    margin: 0 auto;
    padding-inline: var(--container-padding);
}

.section-left {
    flex: 0 1 66.666%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    min-height: 400px;
}

.section-right {
    flex: 0 1 33.333%;
    display: flex;
    justify-content: center;
    align-items: center;
}

#portraitImage {
    width: 100%;
    max-width: 360px;
    height: auto;
    object-fit: contain;
}

/*SOCIAL-MEDIA*/

.social-media-icon {
    width: 48px;
    height: 48px;
    transition: transform 0.25s ease, filter 0.25s ease;
}

.icon-linkedin {
    fill: #0A66C2;
}

.icon-telegram {
    fill: #229ED9;
}

.icon-facebook {
    fill: #1877F2;
}

.icon-x {
    fill: #000000;
}

.icon-github {
    fill: #000000;
}

html.theme-dark .icon-x {
    fill: #ffffff;
}

html.theme-dark .icon-github {
    fill: #ffffff;
}

.social-media-icon:hover {
    transform: translateY(-2px) scale(1.08);
    filter: brightness(1.1);
}

/*RESUME*/

.resume-panel {
    display: grid;
    grid-template-columns: minmax(180px, 260px) 1fr;
    gap: 28px;
    align-items: start;
    padding: 24px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    box-shadow: var(--shadow-card);
}

.resume-panel-header {
    display: flex;
    align-items: flex-start;
    height: 100%;
}

.resume-header {
    margin-bottom: 0;
    text-align: left;
}

.resume-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(240px, 1fr));
    gap: 20px;
}

.resume-card {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-strong);
    transition:
            transform var(--duration-fast) ease,
            border-color var(--duration-fast) ease,
            background-color var(--duration-fast) ease;
}

.resume-card:hover {
    transform: translateY(-3px);
}

.resume-card-top {
    display: flex;
    align-items: center;
    gap: 14px;
}

.resume-doc-icon {
    position: relative;
    width: 64px;
    min-width: 64px;
    color: var(--color-accent);
}

.resume-doc-svg {
    width: 64px;
    height: 64px;
}

.resume-lang-badge {
    position: absolute;
    right: -4px;
    bottom: -4px;
    min-width: 30px;
    height: 22px;
    padding: 0 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.resume-card-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.resume-card-title {
    margin-bottom: 0;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 700;
}

.resume-card-subtitle {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

.resume-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.resume-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 46px;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface);
    transition:
            transform var(--duration-base) ease,
            background-color var(--duration-base) ease,
            border-color var(--duration-base) ease;
}

.resume-link:hover {
    transform: translateY(-2px);
    background: rgba(111, 124, 255, 0.08);
}

.resume-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    fill: currentColor;
}

.resume-icon-view {
    color: #4da3ff;
}

.resume-icon-download {
    color: #22c55e;
}

/*REPOSITORY*/

.project-repo-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: fit-content;
    margin-top: 8px;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--color-surface);
    color: var(--color-text);
    transition:
            transform var(--duration-fast) ease,
            background-color var(--duration-fast) ease,
            border-color var(--duration-fast) ease;
}

.project-repo-link:hover {
    transform: translateY(-2px);
    background: var(--color-surface-strong);
    border-color: rgba(111,124,255,0.28);
}

.project-repo-icon {
    width: 20px;
    height: 20px;
    fill: #000000;
    flex-shrink: 0;
}

html.theme-dark .project-repo-icon {
    fill: #ffffff;
}

/*BUTTONS*/

.button {
    padding: 14px 22px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.button-primary {
    background: var(--color-accent);
    color: white;
}

.button-primary:hover {
    background: var(--color-accent-strong);
}

.button-secondary {
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

/*PROJECTS*/

.margin-top {
    margin-top: 40px;
}

.projects-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    align-items: stretch;
    gap: 28px;
}

.projects-grid article {
    width: 100%;
    max-width: 420px;
}

.project-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    text-decoration: none;
}

.project-card-link:hover {
    transform: translateY(-4px);
    transition:
            transform var(--duration-fast) ease,
            box-shadow var(--duration-fast) ease,
            border-color var(--duration-fast) ease,
            background-color var(--duration-fast) ease;
    background: var(--color-surface-strong);
    border-color: rgba(111,124,255,0.28);
}

.project-card-media {
    width: 100%;
}

.project-card-media img,
.project-card-media iframe,
.project-card-media video {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border: 0;
}

.project-card-body {
    padding-top: 16px;
    text-align: center;
}

.project-card-title {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.project-card-text {
    color: var(--color-text-muted);
}

/* UNIVERSAL MEDIA */

.media-frame {
    width: 100%;
    margin: 0 auto;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--color-surface-strong);
}

.media-frame img,
.media-frame video,
.media-frame iframe {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border: 0;
}

.media-frame-sm {
    max-width: 360px;
}

.media-frame-md {
    max-width: 460px;
}

.media-frame-lg {
    max-width: 560px;
}

/*CONTACTS*/

.contacts-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 32px;
}

.contact-box {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 22px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow: var(--shadow-card);
    transition:
            transform var(--duration-fast),
            background-color var(--duration-fast),
            border-color var(--duration-fast),
            box-shadow var(--duration-fast);
}

.contact-box:hover {
    transform: translateY(-4px);
    background: var(--color-surface-strong);
    border-color: rgba(111,124,255,0.28);
}

.contact-box svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    fill: currentColor;
    color: var(--color-accent);
    transition: transform var(--duration-fast), color var(--duration-fast);
}

.contact-box:hover svg {
    transform: translateY(-1px);
    color: var(--color-accent-strong);
}

.contact-text {
    font-size: 1rem;
    margin-left: 0;
    word-break: break-word;
}

/*FOOTER*/

footer {
    margin-top: 72px;
    padding-bottom: 32px;
}

footer .section {
    padding-top: 0;
}

footer .section-title {
    margin-bottom: 24px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.footer-text {
    color: var(--color-text-muted);
}

.footer-link {
    color: var(--color-text-muted);
    transition: color var(--duration-fast), transform var(--duration-fast);
}

.footer-link:hover {
    color: var(--color-text);
    transform: translateY(-1px);
}

/*RESPONSIVE*/

@media (max-width: 980px) {
    .section-grid {
        flex-direction: column;
        align-items: stretch;
        gap: 28px;
    }

    .section-left,
    .section-right {
        flex: 1 1 auto;
        min-height: auto;
    }

    .section-right {
        order: -1;
        margin-top: 20px;
    }

    #portraitImage {
        max-width: 280px;
    }

    .contacts-panel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .resume-panel {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

@media (max-width: 860px) {
    .main-nav {
        display: none;
    }

    .burger {
        display: inline-flex;
    }

    .site-header-controls .control-button {
        display: none;
    }

    .mobile-menu-controls .control-button {
        display: inline-flex;
    }
}

@media (max-width: 768px) {
    .section + .section,
    .section-image + .section,
    .section + footer {
        margin-top: 20px;
    }

    .project-repo-link {
        margin-bottom: 24px;
    }

    .header-inner {
        gap: 14px;
        padding: 12px 14px;
    }

    .logo-name {
        font-size: 1.55rem;
    }

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

    .resume-grid {
        justify-content: stretch;
    }

    .grid-stretch {
        justify-content: center;
    }

    .section-header {
        font-size: clamp(1.8rem, 8vw, 2.4rem);
    }

    .media-frame-sm {
        max-width: 280px;
    }

    .media-frame-md {
        max-width: 320px;
    }

    .media-frame-lg {
        max-width: 360px;
    }

    .projects-grid article {
        max-width: 100%;
    }
}

@media (max-width: 560px) {
    .resume-actions {
        grid-template-columns: 1fr;
    }

    .resume-doc-icon {
        width: 56px;
        min-width: 56px;
    }

    .resume-doc-svg {
        width: 56px;
        height: 56px;
    }
}

@media (max-width: 480px) {
    .header-inner {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 10px;
    }

    .logo {
        min-width: 0;
    }

    .logo-name {
        display: block;
        min-width: 0;
        font-size: 1.15rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .control-button {
        min-width: 64px;
        padding: 0 12px;
    }

    .mobile-menu-controls {
        flex-wrap: wrap;
    }
}

/*FONTS*/

@font-face {
    font-family: "Inter";
    src: url("../fonts/Inter-Regular.woff2") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Inter";
    src: url("../fonts/Inter-SemiBold.woff2") format("woff2");
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Inter";
    src: url("../fonts/Inter-Bold.woff2") format("woff2");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Caveat";
    src: url("../fonts/Caveat-Bold.woff2") format("woff2");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}