/* JetBrains Mono — self-hosted variable font (eliminates Google Fonts critical chain) */
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400 800;
    font-display: optional;
    src: url('../fonts/jetbrains-mono-latin-ext.woff2') format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400 800;
    font-display: optional;
    src: url('../fonts/jetbrains-mono-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

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

:root {
    --accent: #5b9bd5;
    --accent-dim: rgba(91, 155, 213, 0.15);
    --accent-glow: rgba(91, 155, 213, 0.08);
    --font-serif: 'JetBrains Mono', monospace;
    --font-sans: 'JetBrains Mono', monospace;
    --font-mono: 'JetBrains Mono', monospace;
}

/* ——— Dark Theme (default) ——— */
:root, [data-theme="dark"] {
    --bg-deep: #0a0b0d;
    --bg-surface: #111318;
    --bg-elevated: #1a1c23;
    --bg-hover: #22252e;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.18);
    --text-primary: #e8e6e1;
    --text-secondary: #9a9690;
    --text-tertiary: #807c75;
    --grid-color: rgba(91, 155, 213, 0.04);
    --grid-color-strong: rgba(91, 155, 213, 0.08);
    --nav-bg: rgba(10, 11, 13, 0.8);
    --nav-bg-scrolled: rgba(10, 11, 13, 0.95);
    --overlay-bg: rgba(10, 11, 13, 0.97);
    --content-bg: rgba(10, 11, 13, 0.42);
}

/* ——— Light Theme ——— */
@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
        --bg-deep: #f5f6f8;
        --bg-surface: #ffffff;
        --bg-elevated: #ebedf0;
        --bg-hover: #dfe1e5;
        --border-subtle: rgba(0, 0, 0, 0.06);
        --border-medium: rgba(0, 0, 0, 0.1);
        --border-strong: rgba(0, 0, 0, 0.18);
        --text-primary: #1a1c23;
        --text-secondary: #555960;
        --text-tertiary: #626771;
        --grid-color: rgba(91, 155, 213, 0.05);
        --grid-color-strong: rgba(91, 155, 213, 0.10);
        --nav-bg: rgba(245, 246, 248, 0.8);
        --nav-bg-scrolled: rgba(245, 246, 248, 0.95);
        --overlay-bg: rgba(245, 246, 248, 0.97);
        --content-bg: rgba(245, 246, 248, 0.48);
    }
}

[data-theme="light"] {
    --bg-deep: #f5f6f8;
    --bg-surface: #ffffff;
    --bg-elevated: #ebedf0;
    --bg-hover: #dfe1e5;
    --border-subtle: rgba(0, 0, 0, 0.06);
    --border-medium: rgba(0, 0, 0, 0.1);
    --border-strong: rgba(0, 0, 0, 0.18);
    --text-primary: #1a1c23;
    --text-secondary: #555960;
    --text-tertiary: #626771;
    --grid-color: rgba(91, 155, 213, 0.05);
    --grid-color-strong: rgba(91, 155, 213, 0.10);
    --nav-bg: rgba(245, 246, 248, 0.8);
    --nav-bg-scrolled: rgba(245, 246, 248, 0.95);
    --overlay-bg: rgba(245, 246, 248, 0.97);
    --content-bg: rgba(245, 246, 248, 0.48);
}

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-dim) transparent;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--accent);
    color: var(--bg-deep);
}


/* ——— Coordinate Markers ——— */
.coord-marker {
    position: fixed;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    opacity: 0;
    animation: fadeIn 1.5s ease-out 1.5s forwards;
    pointer-events: none;
    z-index: 1;
    display: none;
}
.coord-marker.top-left { top: 16px; left: 16px; }
.coord-marker.top-right { top: 16px; right: 16px; }
.coord-marker.bottom-left { bottom: 16px; left: 16px; }
.coord-marker.bottom-right { bottom: 16px; right: 16px; }

@keyframes fadeIn { to { opacity: 1; } }

/* ——— Language Toggle ——— */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--border-medium);
    overflow: hidden;
}

.lang-btn {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    padding: 6px 12px;
    background: transparent;
    color: var(--text-tertiary);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn.active {
    background: var(--accent);
    color: var(--bg-deep);
}

.lang-btn:hover:not(.active) {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

/* i18n visibility — controlled entirely by JS */

/* ——— Navigation ——— */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 16px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all 0.4s ease;
}

nav.scrolled {
    background: var(--nav-bg-scrolled);
    border-bottom-color: var(--border-medium);
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    text-decoration: none;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-right .lang-toggle { display: none; }

.nav-links {
    display: none;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

/* ——— Main Content ——— */
main {
    position: relative;
    z-index: 2;
}
section { padding: 0 16px; }

/* ——— Hero Section ——— */
.hero {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    padding-top: 52px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-bottom: 24px;
}

.hero-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.8s ease-out 0.3s forwards;
}

.hero-name {
    font-family: var(--font-serif);
    font-size: clamp(56px, 9vw, 120px);
    font-weight: 900;
    line-height: 0.95;
    color: var(--text-primary);
    margin-bottom: 24px;
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease-out 0.5s forwards;
}

.hero-name em {
    font-style: normal;
    color: var(--accent);
}

.hero-title {
    font-family: var(--font-sans);
    font-size: clamp(16px, 2vw, 22px);
    font-weight: 400;
    color: var(--text-secondary);
    max-width: 620px;
    line-height: 1.5;
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.8s ease-out 0.7s forwards;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    flex-direction: column;
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.8s ease-out 0.85s forwards;
}

.hero-cta a { text-align: center; }

.btn-primary {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 14px 32px;
    background: var(--accent);
    color: var(--bg-deep);
    text-decoration: none;
    border: 1px solid var(--accent);
    transition: all 0.3s ease;
    font-weight: 900;
}

.btn-primary:hover {
    background: transparent;
    color: var(--accent);
}

.btn-secondary {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 14px 32px;
    background: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border-medium);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.hero-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.8s ease-out 1s forwards;
}

.hero-meta-item { display: flex; flex-direction: column; gap: 4px; }

.hero-meta-label {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.hero-meta-value {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
}

.hero-scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding-top: 24px;
    padding-bottom: 40px;
    align-self: center;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.5s forwards;
}

.hero-scroll-indicator span {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

@keyframes slideUp { to { opacity: 1; transform: translateY(0); } }

/* ——— Section Headers ——— */
.section-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
}

.section-number {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
    letter-spacing: 0.05em;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 400;
    color: var(--text-primary);
}

.section-line { flex: 1; height: 1px; background: var(--border-medium); }

/* ——— Services Section ——— */
.services {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 80px;
    padding-bottom: 80px;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.service-card {
    padding: 36px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s ease;
}

.service-card:hover::before { transform: scaleX(1); }

.service-card:hover {
    border-color: var(--border-medium);
    transform: translateY(-4px);
}

.service-icon {
    font-family: var(--font-mono);
    font-size: 24px;
    color: var(--accent);
    margin-bottom: 20px;
}

.service-title {
    font-family: var(--font-serif);
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* ——— About Section ——— */
.about {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 80px;
    padding-bottom: 80px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: start;
}

.about-text {
    font-size: 17px;
    font-weight: 400;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-text p + p { margin-top: 24px; }
.about-text strong { color: var(--text-primary); font-weight: 500; }

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-industries {
    grid-column: 1 / -1;
    margin-top: 0;
}

.stat-card {
    padding: 20px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    transition: all 0.4s ease;
}

.stat-card:hover {
    border-color: var(--border-medium);
    background: var(--bg-elevated);
    transform: translateY(-2px);
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 32px;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

/* ——— Skills Section ——— */
.skills {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 80px;
    padding-bottom: 80px;
}

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

.skill-group {
    padding: 32px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.skill-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: var(--accent);
    transition: height 0.6s ease;
}

.skill-group:hover::before { height: 100%; }
.skill-group:hover { border-color: var(--border-medium); transform: translateY(-2px); }

.skill-group-title {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
}

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

.skill-tag {
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 6px 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: var(--accent-dim);
}

/* ——— Experience Timeline ——— */
.experience {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 80px;
    padding-bottom: 80px;
}

.timeline { position: relative; padding-left: 28px; }

.timeline::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--border-medium) 5%, var(--border-medium) 95%, transparent);
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
    position: absolute;
    left: -27px;
    top: 6px;
    width: 9px;
    height: 9px;
    border: 2px solid var(--accent);
    background: var(--bg-deep);
    transition: all 0.4s ease;
}

.timeline-item:hover .timeline-dot {
    background: var(--accent);
    box-shadow: 0 0 20px var(--accent-dim);
}

.timeline-item.current .timeline-dot {
    background: var(--accent);
    box-shadow: 0 0 20px var(--accent-dim);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.timeline-date .duration {
    padding: 2px 8px;
    background: var(--accent-dim);
    color: var(--accent);
    font-size: 11px;
}

.timeline-company {
    font-family: var(--font-serif);
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-role {
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 4px;
}

.timeline-location {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-tertiary);
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.timeline-description {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.7;
    max-width: 640px;
}

.timeline-description ul { list-style: none; padding: 0; }

.timeline-description li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
}

.timeline-description li::before {
    content: '\2014';
    position: absolute;
    left: 0;
    color: var(--text-tertiary);
}

.timeline-tech { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }

.timeline-tech span {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 3px 8px;
    border: 1px solid var(--border-subtle);
    color: var(--text-tertiary);
    letter-spacing: 0.05em;
}

/* ——— Timeline Group (company with multiple promotions) ——— */
.timeline-group {
    position: relative;
    padding-bottom: 40px;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-group.visible { opacity: 1; transform: translateY(0); }
.timeline-group:last-child { padding-bottom: 0; }

.timeline-group-header { margin-bottom: 20px; }

.timeline-group-tenure {
    display: block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.timeline-group-roles {
    border-left: 1px solid var(--border-medium);
    margin-left: 4px;
    padding-left: 16px;
    padding-top: 4px;
}

.timeline-role-item {
    position: relative;
    padding-bottom: 32px;
}

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

.timeline-role-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 6px;
    width: 7px;
    height: 7px;
    border: 1px solid var(--border-medium);
    background: var(--bg-deep);
}

.timeline-role-item.current::before {
    border-color: var(--accent);
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-dim);
}

.timeline-role-date {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ——— Contact Section ——— */
.contact {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 80px;
    padding-bottom: 80px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: start;
}

.contact-text {
    font-size: 17px;
    font-weight: 400;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 480px;
}

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

.contact-link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.4s ease;
    cursor: pointer;
}

.contact-link:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
    color: var(--text-primary);
    transform: translateX(8px);
}

.contact-link-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.contact-link-value { font-family: var(--font-sans); font-size: 15px; font-weight: 400; }

.contact-link-icon {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 18px;
    color: var(--text-tertiary);
    transition: color 0.3s ease;
}

.contact-link:hover .contact-link-icon { color: var(--accent); }

/* ——— Footer ——— */
footer {
    padding: 40px;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.footer-text {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
}

/* ——— Scroll reveal ——— */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ——— Hamburger Button ——— */
.nav-hamburger {
    font-family: var(--font-mono);
    font-size: 20px;
    line-height: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 8px;
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
}

.nav-hamburger:hover { color: var(--text-primary); }

/* ——— Mobile Nav Overlay ——— */
.nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: var(--overlay-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 48px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.nav-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.nav-overlay-close {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: var(--font-mono);
    font-size: 20px;
    line-height: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px 12px;
    transition: color 0.3s ease;
}

.nav-overlay-close:hover { color: var(--text-primary); }

.nav-overlay-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.nav-overlay-links li {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.nav-overlay.open .nav-overlay-links li:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.05s; }
.nav-overlay.open .nav-overlay-links li:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.10s; }
.nav-overlay.open .nav-overlay-links li:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.15s; }
.nav-overlay.open .nav-overlay-links li:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.20s; }
.nav-overlay.open .nav-overlay-links li:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 0.25s; }

.nav-overlay-links a {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 12px 24px;
    display: block;
    transition: color 0.3s ease;
}

.nav-overlay-links a:hover { color: var(--text-primary); }

.nav-overlay .lang-toggle {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease 0.30s, transform 0.4s ease 0.30s;
}

.nav-overlay.open .lang-toggle {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .nav-overlay { transition: none; }
    .nav-overlay-links li { transition: none; }
    .nav-overlay.open .nav-overlay-links li { opacity: 1; transform: none; }
    .nav-overlay .lang-toggle { transition: none; }
    .nav-overlay.open .lang-toggle { opacity: 1; transform: none; }
}

/* ——— Short viewports (landscape phones, Nest Hub, etc.) ——— */
@media (max-height: 680px) {
    .hero-label { margin-bottom: 10px; }
    .hero-name { margin-bottom: 10px; font-size: clamp(40px, 7vw, 80px); }
    .hero-title { margin-bottom: 16px; }
    .hero-cta { margin-bottom: 16px; }
    .hero-scroll-indicator { display: none; }
}

/* ——— Mobile only (max 767px) ——— */
@media (max-width: 767px) {
    .hero { padding-top: 64px; }
    .hero-label { margin-bottom: 16px; }
    .hero-name { margin-bottom: 16px; }
    .hero-title { margin-bottom: 28px; }
    .hero-cta { margin-bottom: 28px; }
    .hero-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
}

@media (max-width: 480px) and (max-height: 700px) {
    .hero-meta { display: none; }
}

/* ——— Tablet 768px+ ——— */
@media (min-width: 768px) {
    section { padding: 0 32px; }
    nav { padding: 0 32px; height: 60px; }
    .hero { padding-top: 60px; }
    .hero-cta { flex-direction: row; }
    .hero-cta a { text-align: left; }
    .hero-meta { gap: 32px; }
    .about, .skills, .experience, .contact, .services { padding-top: 100px; padding-bottom: 100px; }
    .section-header { margin-bottom: 52px; }
    .about-content { gap: 48px; }
    .about-stats { gap: 20px; }
    .stat-card { padding: 24px; }
    .stat-number { font-size: 36px; }
    .contact-content { gap: 48px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .skills-grid { grid-template-columns: repeat(2, 1fr); }
    .timeline { padding-left: 48px; }
    .timeline::before { left: 16px; }
    .timeline-dot { left: -37px; width: 10px; height: 10px; }
    .timeline-item { padding-bottom: 52px; }
    .timeline-group { padding-bottom: 52px; }
    .timeline-group-roles { padding-left: 24px; }
    .timeline-role-item::before { left: -28px; }
}

/* ——— Desktop 1024px+ ——— */
@media (min-width: 1024px) {
    section { padding: 0 40px; }
    nav { padding: 0 40px; height: 60px; }
    .nav-links { display: flex; gap: 32px; }
    .nav-links a { font-size: 11px; }
    .nav-right .lang-toggle { display: flex; }
    .nav-hamburger { display: none; }
    .hero { padding-top: 60px; }
    .hero-cta { flex-direction: row; }
    .hero-cta a { text-align: left; }
    .hero-meta { gap: 40px; }
    .about, .skills, .experience, .contact, .services { padding-top: 120px; padding-bottom: 120px; }
    .section-header { margin-bottom: 64px; }
    .about-content { grid-template-columns: 2fr 1fr; gap: 80px; }
    .about-stats { grid-template-columns: 1fr; gap: 32px; }
    .stat-card { padding: 28px; }
    .stat-number { font-size: 42px; }
    .contact-content { grid-template-columns: 1fr 1fr; gap: 80px; }
    .services-grid { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
    .skills-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
    .timeline { padding-left: 80px; }
    .timeline::before { left: 30px; }
    .timeline-dot { left: -56px; width: 11px; height: 11px; }
    .timeline-item { padding-bottom: 64px; }
    .timeline-group { padding-bottom: 64px; }
    .timeline-group-roles { padding-left: 28px; }
    .timeline-role-item::before { left: -32px; }
    .coord-marker { display: block; }
}