:root {
    --background: #fcf9f8;
    --surface: #fcf9f8;
    --surface-low: #f6f3f2;
    --surface-container: #f0eded;
    --surface-high: #eae7e7;
    --surface-highest: #e5e2e1;
    --primary: #173124;
    --primary-soft: #2d4739;
    --primary-muted: #98b5a3;
    --secondary: #904b36;
    --secondary-soft: #ffdbd0;
    --tertiary: #412424;
    --on-surface: #1c1b1b;
    --on-variant: #424844;
    --outline: #727973;
    --outline-variant: #c2c8c2;
    --gutter: 32px;
    --margin-desktop: 80px;
    --margin-mobile: 24px;
    --section-gap: 120px;
    --max: 1440px;
}

/* IMPROVED: dark theme — same brand hues (forest green, rust), inverted lightness */
[data-theme="dark"] {
    --background: #14110f;
    --surface: #14110f;
    --surface-low: #1c1816;
    --surface-container: #231e1b;
    --surface-high: #2b2521;
    --surface-highest: #332c28;
    --primary: #9fd3b0;
    --primary-soft: #bce3c8;
    --primary-muted: #5d7d68;
    --secondary: #e2967d;
    --secondary-soft: #3f2018;
    --tertiary: #e8ad9c;
    --on-surface: #efe9e4;
    --on-variant: #c4bdb6;
    --outline: #8c847d;
    --outline-variant: #3a342f;
    color-scheme: dark;
}

/* dark: filled brand controls flip to dark text on the light-sage fill */
[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-outline:hover,
[data-theme="dark"] .hire-link,
[data-theme="dark"] .contact-form button[type="submit"],
[data-theme="dark"] .oss-banner,
[data-theme="dark"] .nav-resume-link:hover,
[data-theme="dark"] .nav-hire-mobile,
[data-theme="dark"] .nav-links.open a.active,
[data-theme="dark"] .nav-links.open a:hover {
    color: var(--background) !important;
}

[data-theme="dark"] .oss-banner-copy p { color: rgba(20, 17, 15, 0.82) !important; }
[data-theme="dark"] .oss-label { color: #1c3a2a !important; }
[data-theme="dark"] ::selection { color: #14110f; }

/* IMPROVED dark: depth + ambient glow instead of flat black, visible grid */
[data-theme="dark"] body {
    background-image:
        radial-gradient(circle at 16% 10%, rgba(159, 211, 176, 0.07), transparent 28rem),
        radial-gradient(circle at 84% 4%, rgba(226, 150, 125, 0.07), transparent 26rem),
        radial-gradient(circle at 50% 120%, rgba(159, 211, 176, 0.05), transparent 40rem),
        linear-gradient(rgba(255, 255, 255, 0.016) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
    background-size: auto, auto, auto, 34px 34px, 34px 34px;
}

[data-theme="dark"] body::before { opacity: 0.06; }

/* IMPROVED dark: header glass uses dark tint, not hardcoded cream */
[data-theme="dark"] .site-header {
    background: rgba(20, 17, 15, 0.78);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

/* IMPROVED dark: bring back hairlines (source uses dark ink, invisible on dark) */
[data-theme="dark"] .about-section,
[data-theme="dark"] .skills-section,
[data-theme="dark"] .experience-section,
[data-theme="dark"] .achievements-section,
[data-theme="dark"] .projects-section,
[data-theme="dark"] .contact,
[data-theme="dark"] .site-footer,
[data-theme="dark"] .skills-grid-cards,
[data-theme="dark"] .toolkit-card,
[data-theme="dark"] .project-card,
[data-theme="dark"] .project-card-oss,
[data-theme="dark"] .achievement-card,
[data-theme="dark"] .project-screenshot,
[data-theme="dark"] .project-featured-img,
[data-theme="dark"] .terminal,
[data-theme="dark"] .edu-card,
[data-theme="dark"] .skill-pill,
[data-theme="dark"] .coursework-tags span,
[data-theme="dark"] .built-with-tags span,
[data-theme="dark"] .contact-form,
[data-theme="dark"] .contact-form input,
[data-theme="dark"] .contact-form textarea {
    border-color: rgba(255, 255, 255, 0.10);
}

[data-theme="dark"] .nav-resume-link {
    border-color: rgba(255, 255, 255, 0.22) !important;
}

/* IMPROVED dark: card surfaces lift slightly off the page for separation */
[data-theme="dark"] .project-card,
[data-theme="dark"] .project-card-oss,
[data-theme="dark"] .achievement-card,
[data-theme="dark"] .toolkit-card,
[data-theme="dark"] .edu-card {
    background: var(--surface-low);
}

[data-theme="dark"] .project-card:hover,
[data-theme="dark"] .achievement-card:hover {
    background: var(--surface-container);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* IMPROVED dark: avatar = dark initials on sage; warm ring */
[data-theme="dark"] .hero-avatar {
    color: var(--background);
    border-color: var(--surface-high);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.55);
}

/* IMPROVED dark: hero badge + section number accents a touch brighter */
[data-theme="dark"] .hero-badge {
    border-color: rgba(159, 211, 176, 0.28);
    background: rgba(159, 211, 176, 0.06);
}

/* IMPROVED dark: back-to-top + toggle sit on subtle surface, not pure flat */
[data-theme="dark"] .theme-toggle {
    border-color: rgba(255, 255, 255, 0.18);
}

[data-theme="dark"] .back-to-top {
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.6);
}

/* IMPROVED: visible keyboard focus ring everywhere (WCAG 2.4.7) */
:focus-visible {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}

/* IMPROVED: theme toggle + nav action cluster */
.nav-actions {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    color: var(--primary);
    background: transparent;
    border: 1px solid var(--outline-variant);
    border-radius: 50%;
    cursor: pointer;
    transition: color 220ms ease, border-color 220ms ease, background 220ms ease;
}

.theme-toggle:hover {
    color: var(--secondary);
    border-color: var(--secondary);
}

.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: inline; }

/* IMPROVED: back-to-top button */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 90;
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: var(--primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    box-shadow: 0 6px 20px rgba(23, 49, 36, 0.28);
    transition: opacity 260ms ease, transform 260ms ease, visibility 260ms;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover { background: var(--primary-soft); }
[data-theme="dark"] .back-to-top { color: var(--background); }

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--on-surface);
    background-color: var(--background);
    background-image:
        radial-gradient(circle at 18% 12%, rgba(45, 71, 57, 0.08), transparent 26rem),
        radial-gradient(circle at 80% 6%, rgba(144, 75, 54, 0.08), transparent 24rem),
        linear-gradient(rgba(28, 27, 27, 0.026) 1px, transparent 1px),
        linear-gradient(90deg, rgba(28, 27, 27, 0.018) 1px, transparent 1px);
    background-size: auto, auto, 34px 34px, 34px 34px;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    opacity: 0.34;
    background-image:
        repeating-radial-gradient(circle at 10% 20%, rgba(28, 27, 27, 0.07) 0 1px, transparent 1px 5px),
        repeating-radial-gradient(circle at 70% 80%, rgba(28, 27, 27, 0.05) 0 1px, transparent 1px 7px);
    mix-blend-mode: multiply;
}

a {
    color: inherit;
}

button,
input,
textarea {
    font: inherit;
}

::selection {
    color: #ccead6;
    background: var(--primary-soft);
}

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

.skip-link:focus {
    width: auto;
    height: auto;
    clip: auto;
    z-index: 1000;
    top: 1rem;
    left: 1rem;
    padding: 0.75rem 1rem;
    color: #fff;
    background: var(--primary);
}

#progress {
    position: fixed;
    inset: 0 auto auto 0;
    z-index: 1000;
    width: 0;
    height: 2px;
    background: var(--primary);
}

.page-grid {
    width: min(var(--max), calc(100% - (var(--margin-desktop) * 2)));
    margin-inline: auto;
}

/* ════════════════════════════════════
   HEADER / NAV
   ════════════════════════════════════ */
.site-header {
    position: fixed;
    top: 0;
    z-index: 100;
    width: 100%;
    background: rgba(252, 249, 248, 0.9);
    border-bottom: 1px solid rgba(28, 27, 27, 0.05);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.nav {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--gutter);
    min-height: 72px;
}

.brand {
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-size: 2rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.04em;
    text-decoration: none;
}

.nav-links {
    justify-self: center;
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a,
.hire-link,
.kicker,
.project-num,
.toolkit-num,
.timeline-period,
.contact-form span {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    line-height: 1.2;
    text-transform: uppercase;
}

.nav-links a {
    color: var(--on-variant);
    text-decoration: none;
    transition: color 220ms ease, border-color 220ms ease;
}

.nav-links a.active,
.nav-links a:hover {
    color: var(--primary);
}

.nav-links a.active {
    padding-bottom: 5px;
    border-bottom: 2px solid currentColor;
}

.nav-resume-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    color: var(--primary) !important;
    border: 1px solid rgba(23, 49, 36, 0.3) !important;
    font-size: 0.72rem !important;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    transition: background 220ms ease, color 220ms ease;
    white-space: nowrap;
}

.nav-resume-link:hover {
    background: var(--primary) !important;
    color: #fff !important;
}

.hire-link {
    justify-self: end;
    padding: 0.82rem 2rem;
    color: #fff;
    background: var(--primary);
    text-decoration: none;
    transition: opacity 220ms ease;
}

.hire-link:hover {
    opacity: 0.72;
}

.menu-toggle {
    display: none;
    justify-self: end;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid rgba(28, 27, 27, 0.12);
    background: transparent;
    cursor: pointer;
    position: relative;
    transition: background-color 220ms ease, border-color 220ms ease;
}

.menu-toggle span:not(.sr-only) {
    display: block;
    width: 20px;
    height: 1px;
    margin: 5px auto;
    background: var(--primary);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ════════════════════════════════════
   HERO
   ════════════════════════════════════ */
.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 100vh;
    padding-top: 120px;
    padding-bottom: 2rem;
    position: relative;
}

.hero-badge {
    display: inline-block;
    margin: 0 0 2rem;
    padding: 0.6rem 1.4rem;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border: 1px solid rgba(23, 49, 36, 0.2);
    background: rgba(23, 49, 36, 0.04);
}

.hero-name {
    margin: 0;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-size: clamp(4.2rem, 11vw, 8rem);
    font-weight: 500;
    line-height: 0.92;
    letter-spacing: -0.04em;
}

.hero-name-line2 {
    display: block;
    font-style: italic;
}

.hero-role {
    margin: 2rem 0 0;
    color: var(--on-variant);
    font-family: "JetBrains Mono", monospace;
    font-size: 1.1rem;
    font-weight: 400;
}

.typing {
    color: var(--primary);
    font-weight: 500;
    border-right: 2px solid var(--primary);
    padding-right: 2px;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { border-color: transparent; }
}

.hero-desc {
    max-width: 680px;
    margin: 2rem 0 0;
    color: var(--on-variant);
    font-size: 1.12rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.2rem;
    color: #fff;
    background: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    transition: opacity 220ms ease, transform 220ms ease;
}

.btn-primary:hover {
    background: var(--primary-soft);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(23, 49, 36, 0.18);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.2rem;
    color: var(--primary);
    border: 1px solid var(--primary);
    background: transparent;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    transition: background 220ms ease, color 220ms ease, transform 220ms ease;
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 4rem;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

.hero-stats div {
    text-align: left;
}

.hero-stats strong {
    display: block;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-size: 2.6rem;
    font-weight: 500;
    line-height: 1;
}

.hero-stats em {
    font-style: normal;
    color: var(--secondary);
}

.hero-stats span {
    display: block;
    margin-top: 0.5rem;
    color: var(--on-variant);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

/* Hero Avatar */
.hero-avatar {
    position: absolute;
    top: 42%;
    right: 0;
    transform: translateY(-50%);
    width: 132px;
    height: 132px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "EB Garamond", Georgia, serif;
    font-size: 2.4rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    flex-shrink: 0;
    border: 4px solid var(--background);
    box-shadow: 0 8px 32px rgba(23, 49, 36, 0.18);
    z-index: 2;
    overflow: hidden;
    padding: 0;
}

.scroll-hint {
    margin-top: 3rem;
    color: var(--outline);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    text-align: center;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(-4px); }
    50% { transform: translateY(4px); }
}

/* ════════════════════════════════════
   SHARED SECTION STYLES
   ════════════════════════════════════ */
.kicker {
    margin: 0;
    color: var(--primary);
}

.ruled {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding-left: 1rem;
    border-left: 4px solid var(--primary);
}

.stacked-links,
.footer-links {
    display: grid;
    gap: 0.9rem;
}

.stacked-links a,
.footer-links a {
    width: fit-content;
    color: var(--primary);
    font-weight: 700;
    text-underline-offset: 4px;
    min-height: 44px;
    display: flex;
    align-items: center;
    transition: color 220ms ease, font-style 220ms ease;
}

.stacked-links a:hover,
.footer-links a:hover {
    color: var(--secondary);
    font-style: italic;
}

/* ════════════════════════════════════
   ABOUT
   ════════════════════════════════════ */
.about-section {
    padding-block: var(--section-gap);
    border-top: 2px solid var(--primary);
}

.about-heading {
    max-width: 820px;
    margin-bottom: 4rem;
}

.about-heading h2 {
    margin: 1.2rem 0 0;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: clamp(2.8rem, 6vw, 5.6rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gutter);
    margin-bottom: 3rem;
}

.about-copy p {
    margin: 0 0 1.5rem;
    color: var(--on-variant);
    font-size: 1.06rem;
    line-height: 1.8;
}

.about-copy strong {
    color: var(--on-surface);
}

/* Terminal Card */
.terminal {
    background: var(--surface-low);
    border: 1px solid rgba(28, 27, 27, 0.08);
    overflow: hidden;
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--surface-container);
    border-bottom: 1px solid rgba(28, 27, 27, 0.06);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background: #e74c3c; }
.dot-yellow { background: #f1c40f; }
.dot-green { background: #2ecc71; }

.terminal-title {
    margin-left: auto;
    color: var(--outline);
    font-family: "JetBrains Mono", monospace;
    font-size: 0.72rem;
}

.terminal-body {
    padding: 1.5rem;
    font-family: "JetBrains Mono", monospace;
    font-size: 0.82rem;
    line-height: 1.9;
}

.t-line {
    display: block;
}

.t-key {
    color: var(--primary);
}

.t-str {
    color: var(--secondary);
}

.t-brace {
    color: var(--on-variant);
}

.t-bool {
    color: #2ecc71;
    font-weight: 600;
}

/* Education Cards */
.about-education {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gutter);
}

.edu-card {
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--surface-low);
    border-left: 4px solid var(--primary);
    transition: transform 300ms ease;
}

.edu-card:hover {
    transform: translateY(-2px);
}

.edu-card:nth-child(2) {
    border-left-color: var(--secondary);
}

.edu-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.edu-card strong {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-size: 1.3rem;
    font-weight: 500;
}

.edu-card p {
    margin: 0;
    color: var(--on-variant);
    font-size: 0.92rem;
    line-height: 1.5;
}

.edu-date {
    display: block;
    margin-top: 0.4rem;
    color: var(--secondary);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

/* ════════════════════════════════════
   SKILLS
   ════════════════════════════════════ */
.skills-section {
    padding-block: var(--section-gap);
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

.skills-heading {
    max-width: 760px;
    margin-bottom: 4rem;
}

.skills-heading h2 {
    margin: 1.2rem 0 0;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: clamp(2.8rem, 6vw, 5.6rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
}

.skills-grid-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-left: 1px solid rgba(28, 27, 27, 0.1);
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

/* IMPROVED: grouped skills with icon pills */
.skills-groups {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.75rem 3rem;
}

.skill-group-title {
    margin: 0 0 1.1rem;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: 1.55rem;
    letter-spacing: -0.01em;
}

.skill-pills {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.skill-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.9rem;
    background: var(--surface-low);
    border: 1px solid var(--outline-variant);
    color: var(--on-surface);
    font-size: 0.88rem;
    font-weight: 500;
    transition: border-color 200ms ease, transform 200ms ease, background 200ms ease;
}

.skill-pill img {
    width: 16px;
    height: 16px;
    display: block;
}

/* IMPROVED: inline text link (e.g. PersonalAI in About) */
.about-copy strong .inline-link,
.inline-link {
    color: var(--secondary);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    transition: color 200ms ease;
}

.about-copy strong .inline-link:hover,
.inline-link:hover {
    color: var(--primary);
}

/* IMPROVED: inline code (e.g. npx) in project copy */
.project-card p code,
.project-featured-content p code {
    padding: 0.1em 0.4em;
    font-family: "JetBrains Mono", monospace;
    font-size: 0.85em;
    background: rgba(144, 75, 54, 0.1);
    color: var(--secondary);
    border-radius: 2px;
}

.skill-pill:hover {
    border-color: var(--secondary);
    background: var(--surface-container);
    transform: translateY(-2px);
}

/* staggered fade-up per pill when its group scrolls into view */
@media (prefers-reduced-motion: no-preference) {
    .skill-pill {
        opacity: 0;
        transform: translateY(10px);
    }
    .skill-group.visible .skill-pill {
        opacity: 1;
        transform: none;
        transition: opacity 0.45s ease, transform 0.45s ease;
    }
    .skill-group.visible .skill-pill:nth-child(2) { transition-delay: 0.05s; }
    .skill-group.visible .skill-pill:nth-child(3) { transition-delay: 0.1s; }
    .skill-group.visible .skill-pill:nth-child(4) { transition-delay: 0.15s; }
    .skill-group.visible .skill-pill:nth-child(5) { transition-delay: 0.2s; }
    .skill-group.visible .skill-pill:nth-child(6) { transition-delay: 0.25s; }
    .skill-group.visible .skill-pill:nth-child(7) { transition-delay: 0.3s; }
}

.toolkit-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 280px;
    padding: 2rem;
    background: var(--surface-low);
    border-right: 1px solid rgba(28, 27, 27, 0.1);
    border-bottom: 1px solid rgba(28, 27, 27, 0.1);
    transition: background 400ms cubic-bezier(0.16, 1, 0.3, 1),
                color 400ms cubic-bezier(0.16, 1, 0.3, 1),
                transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.toolkit-card:hover {
    background: var(--primary);
    transform: translateY(-4px);
}

.toolkit-num {
    color: var(--outline);
    transition: color 400ms ease;
}

.toolkit-card:hover .toolkit-num {
    color: var(--primary-muted);
}

.toolkit-card-body h3 {
    margin: 0 0 0.7rem;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 400;
    font-size: 2rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    transition: color 400ms ease;
}

.toolkit-card:hover .toolkit-card-body h3 {
    color: #fff;
}

.toolkit-card-body p {
    margin: 0;
    color: var(--on-variant);
    line-height: 1.75;
    transition: color 400ms ease;
}

.toolkit-card:hover .toolkit-card-body p {
    color: rgba(255, 255, 255, 0.72);
}

/* ════════════════════════════════════
   EXPERIENCE
   ════════════════════════════════════ */
.experience-section {
    padding-block: var(--section-gap);
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

.experience-heading {
    max-width: 760px;
    margin-bottom: 4rem;
}

.experience-heading h2 {
    margin: 1.2rem 0 0;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: clamp(2.8rem, 6vw, 5.6rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
}

.timeline {
    position: relative;
    padding-left: 3rem;
    max-width: 820px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: rgba(28, 27, 27, 0.14);
}

.timeline-entry {
    position: relative;
    padding-bottom: 4rem;
}

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

.timeline-dot {
    position: absolute;
    left: -3rem;
    top: 6px;
    width: 13px;
    height: 13px;
    border: 2px solid var(--primary);
    background: var(--background);
    border-radius: 50%;
    transition: background 300ms ease, border-color 300ms ease;
}

.timeline-entry:hover .timeline-dot {
    background: var(--secondary);
    border-color: var(--secondary);
}

.timeline-period {
    display: block;
    margin-bottom: 0.6rem;
    color: var(--secondary);
}

.timeline-content h3 {
    margin: 0 0 0.5rem;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 400;
    font-size: 2rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.timeline-org {
    margin: 0 0 1rem;
    color: var(--on-variant);
    font-weight: 600;
    font-size: 0.92rem;
}

.timeline-content p {
    margin: 0;
    color: var(--on-variant);
    line-height: 1.75;
}

.coursework-row {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(28, 27, 27, 0.08);
}

.coursework-row .kicker {
    margin-bottom: 1rem;
}

.coursework-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.coursework-tags span {
    padding: 0.4rem 0.9rem;
    background: rgba(23, 49, 36, 0.05);
    color: var(--primary);
    border: 1px solid rgba(23, 49, 36, 0.15);
    font-size: 0.82rem;
    font-weight: 500;
}

/* ════════════════════════════════════
   PROJECTS
   ════════════════════════════════════ */
.projects-section {
    padding-block: var(--section-gap);
    border-top: 2px solid var(--primary);
}

.projects-heading {
    max-width: 760px;
    margin-bottom: 4rem;
}

.projects-heading h2 {
    margin: 1.2rem 0 0;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: clamp(2.8rem, 6vw, 5.6rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
}

.project-num {
    color: var(--outline);
}

.project-featured {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--gutter);
    margin-bottom: var(--section-gap);
    padding: 3rem;
    background: var(--surface-low);
    border-top: 1px solid rgba(28, 27, 27, 0.12);
}

.project-featured-content h3 {
    margin: 2rem 0 1.5rem;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: clamp(3rem, 6vw, 5rem);
    line-height: 1;
    letter-spacing: -0.03em;
}

.project-featured-content p {
    margin: 0 0 1.5rem;
    color: var(--on-variant);
    font-size: 1.06rem;
    line-height: 1.8;
}

.project-featured-content em {
    color: var(--primary);
    font-weight: 600;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tags span {
    padding: 0.35rem 0.8rem;
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: 1px solid rgba(23, 49, 36, 0.2);
    background: rgba(23, 49, 36, 0.04);
}

/* Dashboard Mini Mock */
.project-featured-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-featured-img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid rgba(28, 27, 27, 0.08);
    filter: grayscale(8%);
    transition: filter 400ms ease;
}

.project-featured:hover .project-featured-img {
    filter: grayscale(0%);
}

.dashboard-mock-mini {
    width: 100%;
    padding: 2.5rem;
    background: linear-gradient(145deg, #e5e2e1, #f8f5f4);
    border: 1px solid rgba(28, 27, 27, 0.06);
}

.mock-stat-mini {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background: rgba(252, 249, 248, 0.74);
    border: 1px solid rgba(23, 49, 36, 0.12);
}

.mock-stat-mini span {
    color: var(--on-variant);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.mock-stat-mini strong {
    display: block;
    margin-top: 0.7rem;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 500;
    line-height: 0.94;
}

.mock-flow-mini {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1rem;
    align-items: center;
}

.mock-flow-mini div {
    color: var(--on-variant);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.flow-line-mini {
    height: 1px;
    background: var(--primary);
}

/* Project Cards */
.project-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gutter);
}

.project-card {
    min-height: 420px;
    padding: 2rem;
    background: var(--surface-low);
    border-top: 1px solid rgba(28, 27, 27, 0.12);
    display: flex;
    flex-direction: column;
    transition: transform 300ms ease, box-shadow 300ms ease;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(23, 49, 36, 0.08);
}

.project-card h3 {
    margin: 2rem 0 1rem;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 400;
    font-size: clamp(2.2rem, 4vw, 3.6rem);
    line-height: 1;
    letter-spacing: -0.02em;
}

.project-card p {
    margin: 0 0 1.5rem;
    color: var(--on-variant);
    line-height: 1.75;
    flex-grow: 1;
}

.project-screenshot {
    width: 100%;
    height: 200px;
    object-fit: cover;
    object-position: top;
    display: block;
    margin: 1rem 0 1.25rem;
    border: 1px solid rgba(28, 27, 27, 0.08);
    filter: grayscale(15%);
    transition: filter 400ms ease, transform 400ms ease;
}

.project-card:hover .project-screenshot {
    filter: grayscale(0%);
    transform: scale(1.01);
}

.project-screenshot-gif {
    filter: grayscale(0%) !important;
    height: 180px;
}

/* ════════════════════════════════════
   OPEN SOURCE SECTION
   ════════════════════════════════════ */
.oss-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin-top: var(--section-gap);
    padding: 1.75rem 2.5rem;
    background: var(--primary);
    color: #fff;
}

.oss-label {
    display: inline-block;
    margin-bottom: 0.6rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--primary-muted);
}

.oss-banner-copy p {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.82);
    max-width: 560px;
}

.oss-banner-icons {
    display: flex;
    gap: 1rem;
    font-size: 1.6rem;
    color: rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.project-grid-oss {
    margin-top: 0;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.project-card-oss {
    border-top: 3px solid var(--primary) !important;
    background: var(--surface-low);
}

.oss-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0;
}

.oss-badges { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.oss-badge {
    padding: 0.25rem 0.65rem;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.oss-badge-open {
    background: rgba(23, 49, 36, 0.08);
    color: var(--primary);
    border: 1px solid rgba(23, 49, 36, 0.2);
}

.oss-badge-prs {
    background: rgba(144, 75, 54, 0.08);
    color: var(--secondary);
    border: 1px solid rgba(144, 75, 54, 0.2);
}

.oss-badge-wip {
    background: rgba(65, 36, 36, 0.07);
    color: var(--tertiary);
    border: 1px solid rgba(65, 36, 36, 0.18);
}

.hackathon-badge {
    display: inline-block;
    margin-bottom: 0.5rem;
    padding: 0.2rem 0.6rem;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: rgba(144, 75, 54, 0.08);
    color: var(--secondary);
    border: 1px solid rgba(144, 75, 54, 0.2);
}

.oss-contribute {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    padding: 0.75rem 1rem;
    background: rgba(23, 49, 36, 0.04);
    border-left: 3px solid var(--primary);
    font-size: 0.82rem;
}

.oss-contribute svg { color: var(--primary); flex-shrink: 0; }

.oss-contribute a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 220ms ease;
}

.oss-contribute a:hover { color: var(--secondary); }

/* ════════════════════════════════════
   CONTACT
   ════════════════════════════════════ */
.contact {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gutter);
    padding-block: var(--section-gap);
    align-items: start;
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

.contact-copy h2 {
    margin: 0;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: clamp(2.8rem, 6vw, 5.6rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
    margin-top: 1.2rem;
}

.contact-copy p {
    max-width: 620px;
    margin: 1.5rem 0 0;
    color: var(--on-variant);
    line-height: 1.75;
}

.contact-form {
    display: grid;
    gap: 0.85rem;
    padding: 2.25rem 2rem;
    background: var(--surface-container);
    border: 1px solid rgba(28, 27, 27, 0.04);
}

.hp-container {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.contact-form .input-group {
    display: grid;
    gap: 0.35rem;
    position: relative;
}

.contact-form .input-group label {
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary);
    transition: color 250ms ease;
}

.contact-form .input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.contact-form .input-icon {
    position: absolute;
    left: 1rem;
    color: var(--outline);
    pointer-events: none;
    transition: color 250ms ease, transform 250ms ease;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.95rem 1rem 0.95rem 2.85rem;
    color: var(--on-surface);
    border: 1px solid rgba(28, 27, 27, 0.16);
    border-radius: 0;
    outline: none;
    background: var(--background);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 250ms ease, box-shadow 250ms ease, background-color 250ms ease;
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(23, 49, 36, 0.25);
    background: #fff;
}

/* IMPROVED dark: keep focused inputs on a dark surface, not flashing white */
[data-theme="dark"] .contact-form input:focus,
[data-theme="dark"] .contact-form textarea:focus {
    background: var(--surface-low);
    box-shadow: 0 0 0 3px rgba(159, 211, 176, 0.22);
}

.contact-form input:focus + .input-icon,
.contact-form textarea:focus + .input-icon {
    color: var(--primary);
    transform: scale(1.06);
}

.contact-form .input-wrapper:hover .input-icon {
    color: var(--primary-soft);
}

.contact-form .validation-error {
    font-size: 0.76rem;
    font-weight: 500;
    color: var(--secondary);
    min-height: 14px;
    margin-top: 0.15rem;
    display: block;
    transition: opacity 200ms ease;
}

.contact-form input[aria-invalid="true"],
.contact-form textarea[aria-invalid="true"] {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(144, 75, 54, 0.08);
}

.contact-form button[type="submit"] {
    position: relative;
    min-height: 52px;
    color: #fff;
    border: 0;
    background: var(--primary);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: background-color 250ms ease, opacity 250ms ease, transform 150ms ease;
}

.contact-form button[type="submit"]:hover {
    background: var(--primary-soft);
}

.contact-form button[type="submit"]:active {
    transform: scale(0.98);
}

.contact-form button[type="submit"]:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: btn-spin 0.6s linear infinite;
}

.contact-form.loading .btn-spinner {
    display: inline-block;
}

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

.contact-form .form-status {
    padding: 1rem 1.25rem;
    font-size: 0.88rem;
    font-weight: 500;
    border-left: 3px solid transparent;
    display: none;
    animation: status-slide-in 300ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
    margin-top: 0.5rem;
}

.contact-form .form-status.success {
    display: block;
    background: rgba(23, 49, 36, 0.05);
    border-left-color: var(--primary);
    color: var(--primary-soft);
}

.contact-form .form-status.error {
    display: block;
    background: rgba(144, 75, 54, 0.05);
    border-left-color: var(--secondary);
    color: var(--secondary);
}

@keyframes status-slide-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ════════════════════════════════════
   ACHIEVEMENTS
   ════════════════════════════════════ */
.achievements-section {
    padding-block: var(--section-gap);
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

.achievements-heading {
    max-width: 760px;
    margin-bottom: 4rem;
}

.achievements-heading h2 {
    margin: 1.2rem 0 0;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
    font-size: clamp(2.8rem, 6vw, 5.6rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-left: 1px solid rgba(28, 27, 27, 0.1);
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

.achievement-card {
    padding: 2.5rem 2rem;
    background: var(--surface-low);
    border-right: 1px solid rgba(28, 27, 27, 0.1);
    border-bottom: 1px solid rgba(28, 27, 27, 0.1);
    transition: background 300ms ease, transform 300ms ease;
}

.achievement-card:hover {
    background: var(--surface-container);
    transform: translateY(-3px);
}

.achievement-card strong {
    display: block;
    color: var(--primary);
    font-family: "EB Garamond", Georgia, serif;
    font-size: clamp(2.8rem, 5vw, 4rem);
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.03em;
}

.achievement-card strong em,
.achievement-card strong .ach-suffix {
    font-style: normal;
    color: var(--secondary);
}

.ach-label {
    display: block;
    margin-top: 0.75rem;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.ach-context {
    margin: 0.4rem 0 0;
    color: var(--on-variant);
    font-size: 0.88rem;
    line-height: 1.5;
}

/* ════════════════════════════════════
   FOOTER
   ════════════════════════════════════ */
.site-footer {
    padding-block: var(--section-gap);
    background: var(--surface-low);
    border-top: 1px solid rgba(28, 27, 27, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.8fr 0.8fr;
    gap: var(--gutter);
}

.footer-brand {
    display: inline-block;
    margin-bottom: 1.5rem;
}

.site-footer h3 {
    margin: 0 0 1.5rem;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    line-height: 1.2;
    text-transform: uppercase;
}

.site-footer p {
    margin: 0;
    color: var(--on-variant);
    line-height: 1.75;
}

.built-with-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.25rem 0;
    margin-top: 3rem;
    border-top: 1px solid rgba(28, 27, 27, 0.08);
}

.built-with-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--outline);
    white-space: nowrap;
    flex-shrink: 0;
}

.built-with-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.built-with-tags span {
    padding: 0.25rem 0.7rem;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--on-variant);
    background: rgba(28, 27, 27, 0.04);
    border: 1px solid rgba(28, 27, 27, 0.1);
    transition: color 220ms ease, border-color 220ms ease, background 220ms ease;
}

.built-with-tags span:hover {
    color: var(--primary);
    border-color: rgba(23, 49, 36, 0.25);
    background: rgba(23, 49, 36, 0.05);
}

/* ════════════════════════════════════
   ANIMATIONS
   ════════════════════════════════════ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.visible {
    opacity: 1;
    transform: none;
}

.delay-1 {
    transition-delay: 100ms;
}

.delay-2 {
    transition-delay: 180ms;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════ */
@media (max-width: 980px) {
    .page-grid {
        width: min(var(--max), calc(100% - (var(--margin-mobile) * 2)));
    }

    /* IMPROVED: keep brand · theme-toggle · hamburger on one row (was wrapping) */
    .brand {
        font-size: 1.35rem;
    }

    .nav {
        grid-template-columns: 1fr auto auto;
        gap: 0.75rem;
        min-height: 78px;
    }

    .nav-actions {
        order: 2;
        gap: 0.5rem;
    }

    .menu-toggle {
        display: block;
        order: 3;
    }

    /* Animate Hamburger Menu into 'X' when open */
    .menu-toggle[aria-expanded="true"] span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
        transform: scale(0);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    .nav-links {
        display: none;
    }

    .hire-link {
        display: none;
    }

    /* Polished Mobile Menu with entrance animations */
    .nav-links.open {
        grid-column: 1 / -1;
        display: grid;
        justify-self: stretch;
        gap: 0.8rem;
        padding: 1.2rem 0 1.6rem;
        border-top: 1px solid rgba(28, 27, 27, 0.08);
    }

    .nav-links.open a {
        display: flex;
        align-items: center;
        padding: 0.9rem 1.2rem;
        background: var(--surface-low);
        border: 1px solid rgba(28, 27, 27, 0.04);
        text-decoration: none;
        font-weight: 700;
        letter-spacing: 0.1em;
        transition: all 240ms cubic-bezier(0.16, 1, 0.3, 1);
        animation: mobileMenuFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
    }

    .nav-links.open a.active,
    .nav-links.open a:hover {
        background: var(--primary);
        color: #fcf9f8 !important;
        border-color: var(--primary);
        padding-left: 1.8rem;
    }

    /* Mobile Menu Cascading Stagger */
    .nav-links.open a:nth-child(1) { animation-delay: 40ms; }
    .nav-links.open a:nth-child(2) { animation-delay: 80ms; }
    .nav-links.open a:nth-child(3) { animation-delay: 120ms; }
    .nav-links.open a:nth-child(4) { animation-delay: 160ms; }
    .nav-links.open a:nth-child(5) { animation-delay: 200ms; }

    @keyframes mobileMenuFadeIn {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .about-grid,
    .about-education,
    .project-featured,
    .project-grid,
    .project-grid-oss,
    .contact,
    .footer-grid {
        grid-template-columns: 1fr;
    }

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

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

    /* Resume link in mobile nav */
    .nav-resume-link {
        border-top: 1px solid rgba(28, 27, 27, 0.08) !important;
        margin-top: 0.4rem;
    }

    /* Hire shown as last mobile menu item */
    .nav-hire-mobile {
        display: flex !important;
        background: var(--primary) !important;
        color: #fff !important;
        border-color: var(--primary) !important;
        justify-content: center;
        font-weight: 700;
    }

    .hero-stats {
        grid-template-columns: repeat(2, auto);
        gap: 2rem;
    }

    .hero-avatar {
        display: none;
    }

    .achievement-card {
        padding: 1.5rem 1.25rem;
    }
}

@media (max-width: 640px) {
    :root {
        --section-gap: 84px;
    }

    .brand {
        font-size: 1.7rem;
    }

    .hero-name {
        font-size: clamp(4rem, 20vw, 6rem);
    }

    .hero-cta {
        flex-direction: column;
        gap: 0.8rem;
    }

    .btn-primary,
    .btn-outline {
        justify-content: center;
        width: 100%;
        padding-block: 1.1rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .skills-grid-cards,
    .skills-groups {
        grid-template-columns: 1fr;
    }

    .toolkit-card {
        min-height: 200px;
    }

    .contact-form,
    .project-card {
        padding: 1.4rem;
    }

    .project-card {
        min-height: auto;
    }

    .project-featured {
        padding: 1.4rem;
    }
}

/* ── Manthan adaptations ── */
.hero-avatar {
    padding: 0;
    overflow: hidden;
    font-size: 0;
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (min-width: 981px) {
    .hero-content {
        padding-right: 168px;
    }
}

.write-list {
    display: grid;
    gap: 0;
}

.write-row {
    display: grid;
    grid-template-columns: 140px 1fr auto;
    gap: 1rem;
    align-items: baseline;
    padding: 1.05rem 0;
    border-top: 1px solid var(--outline-variant);
    color: var(--on-surface);
}

.write-row time {
    color: var(--on-variant);
    font-size: 0.85rem;
    font-variant-numeric: tabular-nums;
}

.write-row strong {
    font-family: "EB Garamond", Georgia, serif;
    font-size: 1.2rem;
    font-weight: 500;
}

.write-row span {
    color: var(--secondary);
    font-size: 0.82rem;
    font-weight: 600;
}

.write-row:hover strong {
    color: var(--primary);
}

.pub-card {
    padding: 1.5rem 0;
    border-top: 1px solid var(--outline-variant);
}

.pub-card header {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.4rem;
}

.pub-venue {
    color: var(--secondary);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.pub-year {
    color: var(--on-variant);
    font-size: 0.88rem;
}

.pub-card h3 {
    font-family: "EB Garamond", Georgia, serif;
    font-size: 1.35rem;
    font-weight: 500;
    margin: 0 0 0.5rem;
    line-height: 1.3;
}

.pub-authors,
.pub-card > p {
    color: var(--on-variant);
    margin: 0 0 0.75rem;
}

.pub-authors .me {
    color: var(--on-surface);
    font-weight: 600;
}

.page-main {
    padding: 7.5rem var(--margin-desktop) 4.5rem;
}

.page-main > .container,
.article.container {
    max-width: 44rem;
    margin: 0 auto;
}

.write-row {
    text-decoration: none;
}

.article {
    line-height: 1.7;
}

.article .lead {
    font-size: 1.15rem;
    color: var(--on-variant);
}

.article ol,
.article ul {
    color: var(--on-variant);
    padding-left: 1.2rem;
}

.article pre {
    font-family: "JetBrains Mono", ui-monospace, monospace;
    font-size: 0.82rem;
    line-height: 1.5;
    margin: 1rem 0;
}

.article :not(pre) > code {
    font-family: "JetBrains Mono", ui-monospace, monospace;
    font-size: 0.86em;
}

.post-links,
.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.post-links a,
.project-links a,
.blog-card h3 a {
    color: var(--secondary);
    font-weight: 600;
    text-decoration: none;
}

.blog-card p {
    color: var(--on-variant);
    margin: 0;
}

.section-header p {
    color: var(--on-variant);
    max-width: 36rem;
}

.article {
    max-width: 42rem;
}

.article-hero h1 {
    font-family: "EB Garamond", Georgia, serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 500;
    line-height: 1.15;
    margin: 0.35rem 0 1rem;
}

.article-hero .lead,
.article p,
.article li,
.article td {
    color: var(--on-variant);
}

.article strong {
    color: var(--on-surface);
}

.article a,
.breadcrumb a,
.pub-links a {
    color: var(--secondary);
    font-weight: 600;
}

.breadcrumb {
    display: flex;
    gap: 0.45rem;
    color: var(--on-variant);
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
}

.article-cover {
    margin: 0 0 1.8rem;
    border: 1px solid var(--outline-variant);
}

.article-cover img {
    width: 100%;
    aspect-ratio: 16 / 8;
    object-fit: cover;
    display: block;
}

.article h2 {
    font-family: "EB Garamond", Georgia, serif;
    margin: 2rem 0 0.7rem;
}

.article pre,
.article :not(pre) > code {
    background: var(--surface-low);
    border: 1px solid var(--outline-variant);
}

.article pre {
    overflow-x: auto;
    padding: 1rem;
    font-size: 0.88rem;
}

.article :not(pre) > code {
    padding: 0.1rem 0.3rem;
}

.article table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.article th,
.article td {
    text-align: left;
    padding: 0.65rem 0.5rem;
    border-bottom: 1px solid var(--outline-variant);
}

.blog-grid {
    display: grid;
    gap: 0;
}

.blog-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1.25rem;
    padding: 1.2rem 0;
    border-top: 1px solid var(--outline-variant);
}

.blog-card .card-media img {
    width: 100%;
    border: 1px solid var(--outline-variant);
}

.blog-card h3 {
    font-family: "EB Garamond", Georgia, serif;
    font-size: 1.3rem;
    font-weight: 500;
    margin: 0 0 0.4rem;
}

.post-meta {
    color: var(--on-variant);
    font-size: 0.8rem;
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.35rem;
}

.section-header h1,
.section-header h2 {
    font-family: "EB Garamond", Georgia, serif;
    font-weight: 500;
}

@media (max-width: 980px) {
    .page-main {
        padding: 6rem var(--margin-mobile) 3rem;
    }

    .write-row,
    .blog-card {
        grid-template-columns: 1fr;
    }
}