@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Syne:wght@500;600;700&display=swap');

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #08080a;
    --text: #f4f4f5;
    --muted: #a1a1aa;
    --accent: #e4e4e7;
    --line: rgba(255, 255, 255, 0.08);
    --glass: rgba(8, 8, 10, 0.55);
    --nav-h: 72px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --text-model-gap: clamp(2.5rem, 8vw, 6.5rem);
    --text-col-max: 26rem;
}

html {
    scroll-behavior: smooth;
}

body.portfolio-3d,
body.site-theme {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

body.site-theme {
    padding-top: var(--nav-h);
    min-height: 100vh;
}

body.site-theme::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(
        ellipse 90% 60% at 50% 0%,
        rgba(255, 255, 255, 0.04),
        transparent 55%
    );
}

body.site-theme > :not(.support-chat-widget):not(.navbar):not(.scene-loader):not(script) {
    position: relative;
    z-index: 1;
}

body.portfolio-3d::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: linear-gradient(
        90deg,
        rgba(8, 8, 10, 0.97) 0%,
        rgba(8, 8, 10, 0.88) 28%,
        rgba(8, 8, 10, 0.45) 40%,
        rgba(8, 8, 10, 0.08) 50%,
        transparent 56%
    );
    transition: background 0.55s var(--ease);
}

body.portfolio-3d.model-side-left::after {
    background: linear-gradient(
        270deg,
        rgba(8, 8, 10, 0.97) 0%,
        rgba(8, 8, 10, 0.88) 28%,
        rgba(8, 8, 10, 0.45) 40%,
        rgba(8, 8, 10, 0.08) 50%,
        transparent 56%
    );
}

body.portfolio-3d.model-side-center::after {
    background: linear-gradient(
        180deg,
        rgba(8, 8, 10, 0.92) 0%,
        rgba(8, 8, 10, 0.35) 40%,
        rgba(8, 8, 10, 0.35) 60%,
        rgba(8, 8, 10, 0.9) 100%
    );
}

canvas.webgl {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    outline: none;
    z-index: -1;
    display: block;
    opacity: 0;
    transition: opacity 0.9s var(--ease);
}

body.portfolio-3d.is-ready canvas.webgl {
    opacity: 1;
}

body.portfolio-3d.is-booting .navbar,
body.portfolio-3d.is-booting .content,
body.portfolio-3d.is-booting .site-footer,
body.portfolio-3d.is-booting .support-chat-widget {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

body.portfolio-3d.is-ready .navbar,
body.portfolio-3d.is-ready .content,
body.portfolio-3d.is-ready .site-footer,
body.portfolio-3d.is-ready .support-chat-widget {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.7s var(--ease) 0.15s, visibility 0.7s;
}

.scene-loader {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse 80% 70% at 50% 45%, #121218 0%, var(--bg) 65%);
    transition: opacity 0.7s var(--ease), visibility 0.7s;
}

.scene-loader.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.scene-loader__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.1rem;
    width: min(320px, 88vw);
    text-align: center;
}

.scene-loader__poster {
    width: min(220px, 62vw);
    aspect-ratio: 1;
    border-radius: 50%;
    background: var(--bg) center / cover no-repeat;
    box-shadow:
        0 0 0 1px var(--line),
        0 24px 48px rgba(0, 0, 0, 0.55);
    animation: loader-poster-pulse 2.4s ease-in-out infinite;
}

.scene-loader__brand {
    font-family: 'Syne', sans-serif;
    font-size: clamp(1.1rem, 4vw, 1.35rem);
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--text);
}

.scene-loader__progress {
    width: 100%;
    height: 2px;
    background: var(--line);
    border-radius: 2px;
    overflow: hidden;
}

.scene-loader__progress-fill {
    display: block;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.35), var(--text));
    border-radius: 2px;
    transition: width 0.35s var(--ease);
}

.scene-loader__text {
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--muted);
}

.scene-loader__percent {
    font-family: 'Syne', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}

@keyframes loader-poster-pulse {
    0%, 100% { transform: scale(1); opacity: 0.92; }
    50% { transform: scale(1.03); opacity: 1; }
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9990;
    height: var(--nav-h);
    isolation: isolate;
    display: flex;
    align-items: center;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s, background 0.3s;
}

.navbar.is-scrolled {
    background: var(--glass);
    backdrop-filter: blur(16px);
    border-bottom-color: var(--line);
}

.nav-container {
    width: min(1120px, 100%);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.04em;
    color: var(--text);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.25s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text);
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: 0.5rem;
}

.language-switcher .separator {
    color: var(--line);
    font-size: 0.75rem;
}

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

.bar {
    width: 22px;
    height: 1.5px;
    background: var(--text);
    transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active .bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

.content {
    position: relative;
    z-index: 1;
    width: 100%;
}

.panel {
    position: relative;
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(0, 0.44fr) minmax(0, 0.56fr);
    column-gap: var(--text-model-gap);
    align-items: center;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: calc(var(--nav-h) + 3rem) clamp(1.5rem, 5vw, 4rem) 4rem;
    opacity: 0.35;
    transform: translateY(40px);
    transition: opacity 0.15s linear, transform 0.15s linear;
}

.panel--text-right {
    grid-template-columns: minmax(0, 0.56fr) minmax(0, 0.44fr);
}

.panel.is-active {
    opacity: 1;
    transform: translateY(0);
}

.panel--text-left .panel__inner {
    grid-column: 1;
    justify-self: start;
    text-align: left;
    width: min(100%, var(--text-col-max));
    max-width: var(--text-col-max);
    margin-right: auto;
    padding-right: clamp(0.5rem, 2vw, 1.5rem);
}

.panel--text-right .panel__inner {
    grid-column: 2;
    justify-self: end;
    text-align: right;
    width: min(100%, var(--text-col-max));
    max-width: var(--text-col-max);
    margin-left: auto;
    padding-left: clamp(0.5rem, 2vw, 1.5rem);
}

.panel--text-right .panel__actions,
.panel--text-right .stats,
.panel--text-right .social-row {
    display: flex;
    justify-content: flex-end;
}

.panel--text-right .stats {
    display: grid;
}

.panel--text-right .panel__actions {
    flex-direction: row-reverse;
}

.panel--text-right .project-card {
    text-align: right;
}

.panel__inner {
    width: 100%;
    position: relative;
    z-index: 2;
}

#home.panel--text-left .scroll-hint {
    left: clamp(1.25rem, 4vw, 3rem);
    right: auto;
    transform: none;
}

.panel__label {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 1.25rem;
}

.panel__title {
    font-family: 'Syne', sans-serif;
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.panel__title span {
    color: var(--muted);
    font-weight: 500;
}

.panel__text {
    font-size: 1.05rem;
    font-weight: 300;
    color: var(--muted);
    max-width: 32rem;
    margin-bottom: 2.5rem;
}

.panel__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.6rem;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 100px;
    border: 1px solid var(--line);
    color: var(--text);
    background: transparent;
    cursor: pointer;
    transition: background 0.3s, border-color 0.3s, transform 0.3s;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn--fill {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

.btn--fill:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
    animation: pulse-hint 2s ease-in-out infinite;
}

@keyframes pulse-hint {
    0%, 100% { opacity: 0.4; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(6px); }
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--line);
}

.stat__value {
    font-family: 'Syne', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.stat__label {
    font-size: 0.75rem;
    color: var(--muted);
    letter-spacing: 0.05em;
}

.project-list {
    display: flex;
    flex-direction: column;
    gap: 1px;
    margin-top: 2rem;
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
}

.project-list .project-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.5rem;
    align-items: center;
    padding: 1.5rem 1.75rem;
    background: var(--glass);
    backdrop-filter: blur(8px);
    text-decoration: none;
    color: inherit;
    transition: background 0.3s;
}

.project-list .project-card:hover {
    background: rgba(255, 255, 255, 0.04);
}

.project-card__index {
    font-family: 'Syne', sans-serif;
    font-size: 0.85rem;
    color: var(--muted);
}

.project-card__title {
    font-family: 'Syne', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
}

.project-card__desc {
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 0.25rem;
}

.project-card__arrow {
    color: var(--muted);
    transition: transform 0.3s, color 0.3s;
}

.project-list .project-card:hover .project-card__arrow {
    transform: translateX(4px);
    color: var(--text);
}

.contact-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.contact-link {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    text-decoration: none;
    color: inherit;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--line);
    transition: opacity 0.3s;
}

.contact-link:hover {
    opacity: 0.7;
}

.contact-link__label {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
}

.contact-link__value {
    font-size: 1.1rem;
    font-weight: 400;
}

.social-row {
    display: flex;
    gap: 1.25rem;
    margin-top: 2rem;
}

.social-row a {
    color: var(--muted);
    font-size: 1.1rem;
    transition: color 0.25s;
}

.social-row a:hover {
    color: var(--text);
}

.site-footer {
    position: relative;
    z-index: 1;
    padding: 2rem 1.5rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--muted);
    border-top: 1px solid var(--line);
}

html[dir="rtl"] .panel--text-left .panel__inner {
    grid-column: 2;
    justify-self: end;
    text-align: right;
    margin-left: auto;
    margin-right: 0;
    padding-left: clamp(0.5rem, 2vw, 1.5rem);
    padding-right: 0;
}

html[dir="rtl"] .panel--text-right .panel__inner {
    grid-column: 1;
    justify-self: start;
    text-align: left;
    margin-right: auto;
    margin-left: 0;
    padding-right: clamp(0.5rem, 2vw, 1.5rem);
    padding-left: 0;
}

html[dir="rtl"] .panel__actions,
html[dir="rtl"] .social-row {
    justify-content: flex-end;
}

html[dir="rtl"] .project-card {
    grid-template-columns: auto 1fr auto;
}

@media (max-width: 768px) {
    body.portfolio-3d,
    body.site-theme {
        overflow-x: clip;
    }

    body.portfolio-3d .nav-container,
    body.site-theme .nav-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        height: var(--nav-h);
        padding: 0 max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left));
    }

    body.portfolio-3d .navbar,
    body.site-theme .navbar {
        z-index: 9990 !important;
    }

    body.portfolio-3d .hamburger,
    body.site-theme .hamburger {
        display: flex;
        flex-shrink: 0;
        min-width: 44px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 2;
    }

    body.portfolio-3d .nav-menu,
    body.site-theme .nav-menu {
        position: fixed !important;
        top: var(--nav-h) !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        max-height: calc(100dvh - var(--nav-h));
        overflow-y: auto;
        flex-direction: column !important;
        gap: 0 !important;
        margin: 0 !important;
        background: var(--bg) !important;
        border-bottom: 1px solid var(--line);
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
        padding: 1rem 0 max(1.5rem, env(safe-area-inset-bottom));
        transform: translateY(-120%) !important;
        opacity: 0;
        transition: transform 0.35s var(--ease), opacity 0.35s;
        pointer-events: none;
        z-index: 9991 !important;
        -webkit-overflow-scrolling: touch;
    }

    body.portfolio-3d .nav-menu.active,
    body.site-theme .nav-menu.active {
        transform: translateY(0) !important;
        opacity: 1;
        pointer-events: auto;
    }

    body.portfolio-3d .nav-menu li,
    body.site-theme .nav-menu li {
        width: 100%;
        text-align: center;
        padding: 0.75rem 1rem;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    body.portfolio-3d .nav-link,
    body.site-theme .nav-link {
        display: block;
        width: 100%;
        padding: 0.35rem 0;
        font-size: 0.85rem;
    }

    body.portfolio-3d .language-switcher,
    body.site-theme .language-switcher {
        margin: 0;
        justify-content: center;
        width: 100%;
    }

    .panel,
    .panel--text-right {
        grid-template-columns: 1fr;
        column-gap: 0;
        min-height: 100svh;
        min-height: 100dvh;
        padding: calc(var(--nav-h) + 1.25rem) 1.25rem 2.5rem;
        align-items: flex-end;
    }

    .panel--text-left .panel__inner,
    .panel--text-right .panel__inner {
        grid-column: 1;
        justify-self: stretch;
        text-align: left;
        max-width: 100%;
        width: 100%;
        margin: 0;
        padding: 0;
    }

    body.portfolio-3d .panel__title {
        font-size: clamp(2rem, 10vw, 2.75rem);
    }

    body.portfolio-3d .panel__text {
        font-size: 0.95rem;
        max-width: 100%;
        margin-bottom: 1.5rem;
    }

    body.portfolio-3d .panel__actions {
        flex-direction: column;
        align-items: stretch;
        gap: 0.65rem;
    }

    body.portfolio-3d .panel__actions .btn {
        justify-content: center;
        width: 100%;
    }

    .panel--text-right .panel__actions,
    .panel--text-right .stats {
        justify-content: flex-start;
    }

    body.portfolio-3d::after,
    body.portfolio-3d.model-side-left::after,
    body.portfolio-3d.model-side-right::after,
    body.portfolio-3d.model-side-center::after {
        background: linear-gradient(
            180deg,
            rgba(8, 8, 10, 0.55) 0%,
            rgba(8, 8, 10, 0.2) 38%,
            rgba(8, 8, 10, 0.88) 62%,
            rgba(8, 8, 10, 0.98) 100%
        ) !important;
    }

    body.portfolio-3d canvas.webgl {
        opacity: 0.85;
    }

    .scroll-hint {
        display: none;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .project-card {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .project-card__arrow {
        display: none;
    }

    html[dir="rtl"] body.portfolio-3d .panel--text-left .panel__inner,
    html[dir="rtl"] body.portfolio-3d .panel--text-right .panel__inner {
        text-align: right;
    }

    body.portfolio-3d.nav-menu-open .content,
    body.portfolio-3d.nav-menu-open .site-footer {
        pointer-events: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .panel { transition: none; }
    .scroll-hint { animation: none; }
}