/* ═══════════════════════════════════════════════════════════════
   PERSONAL WEBSITE — styles.css
   Reusable across index.html and blog.html
   ═══════════════════════════════════════════════════════════════ */

/* ── 1. DESIGN TOKENS ────────────────────────────────────────── */
:root {
    /* Colors */
    --color-bg:         #0A0A0A;
    --color-bg-light:   #111111;
    --color-surface:    #161616;
    --color-border:     #242424;
    --color-text:       #F5F5F5;
    --color-text-muted: #888888;
    --color-text-dim:   #444444;
    --color-accent:     #C8FF00;    /* Acid lime — used sparingly */
    --color-white:      #FFFFFF;

    /* Light-section overrides (applied via .section--light) */
    --color-bg-section-light:    #F5F5F5;
    --color-text-on-light:       #0A0A0A;
    --color-muted-on-light:      #666666;
    --color-border-on-light:     #DEDEDE;

    /* Typography */
    --font-display:  'Space Grotesk', sans-serif;
    --font-body:     'Inter', sans-serif;

    /* Type Scale */
    --text-xs:   0.75rem;
    --text-sm:   0.875rem;
    --text-base: 1rem;
    --text-lg:   1.125rem;
    --text-xl:   1.25rem;
    --text-2xl:  1.5rem;
    --text-3xl:  2rem;
    --text-4xl:  2.75rem;
    --text-5xl:  3.75rem;
    --text-6xl:  5.5rem;

    /* Spacing */
    --space-1:  0.25rem;
    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Layout */
    --container-max: 1120px;
    --container-pad: var(--space-8);

    /* Timing */
    --transition-fast:   150ms ease;
    --transition-base:   250ms ease;
    --transition-slow:   400ms ease;
    --transition-reveal: 600ms cubic-bezier(0.16, 1, 0.3, 1);

    /* Borders */
    --radius-sm:   4px;
    --radius-base: 8px;
    --radius-lg:   16px;
}

/* ── 2. RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul { list-style: none; }

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    background: none;
}

textarea, input {
    font-family: var(--font-body);
}

/* Focus visible — accessible keyboard nav */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* ── 3. LAYOUT UTILITIES ─────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

.section {
    padding-block: var(--space-24);
    background-color: var(--color-bg-light);
}

/* Alternating dark sections */
.section--dark {
    background-color: var(--color-bg);
}

/* ── 4. TYPOGRAPHY ───────────────────────────────────────────── */
.section__header {
    margin-bottom: var(--space-16);
}

.section__label {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.section__title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.label {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.accent {
    color: var(--color-accent);
}

/* ── 5. BUTTONS ──────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.01em;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-fast);
    white-space: nowrap;
    cursor: pointer;
    text-decoration: none;
}

.btn:active { transform: scale(0.98); }

.btn--primary {
    background-color: var(--color-text);
    color: var(--color-bg);
    border: 2px solid var(--color-text);
}

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

.btn--outline {
    background-color: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

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

.btn--ghost {
    background-color: transparent;
    color: var(--color-text-muted);
    border: 2px solid transparent;
    padding-inline: var(--space-4);
}

.btn--ghost:hover {
    color: var(--color-text);
}

.btn--sm {
    font-size: var(--text-xs);
    padding: 0.5rem 1rem;
}

.btn--full {
    width: 100%;
    justify-content: center;
}

/* ── 6. TAGS ─────────────────────────────────────────────────── */
.tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.625rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    background-color: var(--color-surface);
}

/* ── 7. REVEAL ANIMATIONS ────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--transition-reveal),
    transform var(--transition-reveal);
}

.reveal--delay-1 { transition-delay: 100ms; }
.reveal--delay-2 { transition-delay: 200ms; }
.reveal--delay-3 { transition-delay: 300ms; }

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

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ── 8. NAVIGATION ───────────────────────────────────────────── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding-block: var(--space-4);
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition-base),
    border-color var(--transition-base),
    padding var(--transition-base);
}

.nav.is-scrolled {
    background-color: rgba(10, 10, 10, 0.92);
    border-bottom-color: var(--color-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding-block: var(--space-3);
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

.nav__logo {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    flex-shrink: 0;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav__link {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-text);
}

.nav__link:hover::after {
    width: 100%;
}

/* Nav link that's also a button shouldn't have the underline */
.nav__link.btn::after { display: none; }
.nav__link.btn { color: var(--color-text); }

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: 2px;
}

.nav__toggle span {
    display: block;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── 9. HERO ─────────────────────────────────────────────────── */
.hero {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: calc(var(--space-24) + 80px);
    padding-bottom: var(--space-24);
    position: relative;
    background-color: var(--color-bg);
    overflow: hidden;
}

/* Subtle grid texture */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: var(--space-8) var(--space-16);
    align-items: end;
    position: relative;
}

.hero__meta {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot--green {
    background-color: #4ade80;
    box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4);
    animation: pulse 2.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4); }
    50%       { box-shadow: 0 0 0 6px rgba(74, 222, 128, 0); }
}

.hero__name {
    font-family: var(--font-display);
    font-size: clamp(4rem, 10vw, 7.5rem);
    font-weight: 700;
    line-height: 0.92;
    letter-spacing: -0.04em;
    color: var(--color-text);
}

.cursor {
    display: inline-block;
    color: var(--color-accent);
    animation: blink 1.1s step-start infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

.hero__right {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding-bottom: var(--space-2);
}

.hero__title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 500;
    line-height: 1.3;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.hero__bio {
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--color-text-muted);
    max-width: 420px;
}

.hero__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero__scroll-hint {
    position: absolute;
    bottom: var(--space-10);
    left: var(--container-pad);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-text-dim);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.hero__scroll-line {
    width: 48px;
    height: 1px;
    background-color: var(--color-text-dim);
    position: relative;
    overflow: hidden;
}

.hero__scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--color-accent);
    animation: scan 2.4s ease-in-out infinite;
}

@keyframes scan {
    0%   { left: -100%; }
    100% { left: 100%; }
}

/* ── 10. SKILLS ──────────────────────────────────────────────── */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    overflow: hidden;
}

.skill-group {
    padding: var(--space-8) var(--space-6);
    border-right: 1px solid var(--color-border);
    transition: background-color var(--transition-base);
}

.skill-group:last-child { border-right: none; }

.skill-group:hover {
    background-color: var(--color-surface);
}

.skill-group__heading {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.skill-list li {
    font-size: var(--text-base);
    color: var(--color-text);
    padding-left: var(--space-4);
    position: relative;
    transition: color var(--transition-fast);
}

.skill-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 1px;
    background-color: var(--color-text-dim);
    transition: background-color var(--transition-fast), width var(--transition-fast);
}

.skill-group:hover .skill-list li::before {
    background-color: var(--color-accent);
    width: 8px;
}

/* ── 11. PROJECTS ────────────────────────────────────────────── */
.projects__list {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    overflow: hidden;
}

.project-card {
    padding: var(--space-10) var(--space-10);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-base);
    cursor: default;
}

.project-card:last-child { border-bottom: none; }

.project-card:hover {
    background-color: var(--color-surface);
}

.project-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
}

.project-card__num {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text-dim);
}

.project-card__tags {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.project-card__title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--space-4);
    transition: color var(--transition-fast);
}

.project-card:hover .project-card__title {
    color: var(--color-white);
}

.project-card__desc {
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--color-text-muted);
    max-width: 640px;
    margin-bottom: var(--space-6);
}

.project-card__link {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    position: relative;
}

.project-card__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.project-card:hover .project-card__link {
    color: var(--color-accent);
}

.project-card:hover .project-card__link::after {
    width: 100%;
}

/* ── 12. BLOG — Google-results style ─────────────────────────── */
.blog__list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.blog-post {
    padding-block: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.blog-post:first-child {
    border-top: 1px solid var(--color-border);
}

/* URL-path breadcrumb line */
.blog-post__path {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-bottom: var(--space-2);
    font-size: var(--text-xs);
    color: #5a8a3c;           /* muted green — subtle nod to Google's URL colour */
    letter-spacing: 0.01em;
}

.blog-post__path-sep {
    color: var(--color-text-dim);
    font-size: 10px;
}

/* Clickable title — large, blue-ish link feel but in the site palette */
.blog-post__title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 500;
    line-height: 1.35;
    margin-bottom: var(--space-2);
    letter-spacing: -0.01em;
}

.blog-post__title a {
    color: #8ab4f8;           /* Google-blue toned down for dark bg */
    transition: color var(--transition-fast);
    text-decoration: none;
}

.blog-post__title a:hover {
    color: #c8d9fb;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* One-line excerpt — muted, body-sized */
.blog-post__excerpt {
    font-size: var(--text-sm);
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);

    /* Hard-clip to 2 lines max, like Google snippets */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Inline meta row: date · read time */
.blog-post__meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-2);
}

.blog-post__date {
    font-size: var(--text-xs);
    color: var(--color-text-dim);
}

.blog-post__read {
    font-size: var(--text-xs);
    color: var(--color-text-dim);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.blog-post__read::before {
    content: '·';
    color: var(--color-text-dim);
}

/* No "read more" cta link — the title IS the link, Google-style */

.blog__footer {
    margin-top: var(--space-8);
    display: flex;
    justify-content: flex-start;
}

/* ── 13. CONTACT ─────────────────────────────────────────────── */
.contact__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.contact__tagline {
    font-size: var(--text-lg);
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
    max-width: 380px;
}

.contact__email {
    display: inline-block;
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-8);
    transition: color var(--transition-fast);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-2);
}

.contact__email:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    text-decoration: none;
}

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

.social-link svg {
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.social-link:hover svg {
    opacity: 1;
}

/* ── 14. CONTACT FORM ────────────────────────────────────────── */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 0.03em;
}

.form-input {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: var(--text-base);
    padding: 0.75rem 1rem;
    transition: border-color var(--transition-fast),
    background-color var(--transition-fast);
    width: 100%;
    outline: none;
}

.form-input::placeholder {
    color: var(--color-text-dim);
}

.form-input:focus {
    border-color: var(--color-text-muted);
    background-color: var(--color-bg-light);
}

.form-input:focus-visible {
    border-color: var(--color-accent);
    outline: none;
}

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

.form-status {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    min-height: 1.5em;
    text-align: center;
}

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

.form-status.is-error {
    color: #f87171;
}

/* ── 15. FOOTER ──────────────────────────────────────────────── */
.footer {
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-8);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copy,
.footer__note {
    font-size: var(--text-sm);
    color: var(--color-text-dim);
}

/* ── 16. BLOG PAGE REUSABLE COMPONENTS ───────────────────────── */
/* These classes can be used on blog.html for a reading layout */

.prose {
    max-width: 680px;
    margin-inline: auto;
}

.prose h1, .prose h2, .prose h3 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--color-text);
}

.prose h1 { font-size: var(--text-4xl); margin-bottom: var(--space-6); }
.prose h2 { font-size: var(--text-2xl); margin-top: var(--space-12); margin-bottom: var(--space-4); }
.prose h3 { font-size: var(--text-xl);  margin-top: var(--space-8);  margin-bottom: var(--space-3); }

.prose p {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.prose a { color: var(--color-text); border-bottom: 1px solid var(--color-accent); }
.prose a:hover { color: var(--color-accent); }

.prose code {
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    background-color: var(--color-surface);
    padding: 0.1em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

.prose pre {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--space-6);
    overflow-x: auto;
    margin-bottom: var(--space-8);
}

.prose blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-6);
    margin-block: var(--space-8);
    color: var(--color-text-muted);
    font-style: italic;
}

/* Post header — reusable for blog.html */
.post-header {
    padding-block: var(--space-20) var(--space-12);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-12);
}

.post-header .label {
    margin-bottom: var(--space-4);
    display: block;
}

/* ── 17. RESPONSIVE ──────────────────────────────────────────── */

/* ── Tablet landscape: 1024px ── */
@media (max-width: 1024px) {
    :root {
        --container-pad: var(--space-6);
    }

    .section__title {
        font-size: var(--text-3xl);
    }

    /* Skills: 4 → 2 col */
    .skills__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Reset all borders first, then re-apply cleanly */
    .skill-group {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .skill-group:nth-child(odd) {
        border-right: 1px solid var(--color-border);
    }

    .skill-group:last-child,
    .skill-group:nth-last-child(2):nth-child(odd) {
        border-bottom: none;
    }

    /* Contact: side-by-side still fine at 1024 */
}

/* ── Tablet portrait: 900px ── */
@media (max-width: 900px) {
    /* Hero: stack vertically */
    .hero__inner {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .hero__name {
        font-size: clamp(3rem, 12vw, 5.5rem);
    }

    .hero__right {
        max-width: 100%;
    }

    .hero__bio {
        max-width: 100%;
    }

    /* Contact: stack */
    .contact__inner {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .contact__tagline {
        max-width: 100%;
    }

    /* Project cards: slightly less padding */
    .project-card {
        padding: var(--space-8);
    }

    .project-card__title {
        font-size: var(--text-2xl);
    }
}

/* ── Mobile: 680px — hamburger menu kicks in ── */
@media (max-width: 680px) {
    :root {
        --container-pad: var(--space-5);
    }

    .section {
        padding-block: var(--space-16);
    }

    .section__header {
        margin-bottom: var(--space-10);
    }

    /* ─ Nav ─ */
    .nav__toggle {
        display: flex;
    }

    .nav__links {
        /* Hidden by default on mobile; toggled via JS */
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        align-items: stretch;
        justify-content: center;
        gap: 0;
        background-color: rgba(10, 10, 10, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: var(--space-16) var(--container-pad) var(--space-8);
        overflow-y: auto;
        z-index: 99;
    }

    .nav__links.is-open {
        display: flex;
    }

    .nav__links li {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .nav__links li:first-child {
        border-top: 1px solid var(--color-border);
    }

    .nav__link {
        display: block;
        padding-block: var(--space-5);
        font-size: var(--text-xl);
        font-weight: 500;
        color: var(--color-text);
        letter-spacing: -0.01em;
    }

    /* The Contact button inside mobile menu — reset btn styles */
    .nav__links li:last-child {
        border-bottom: none;
        padding-top: var(--space-6);
    }

    .nav__link.btn {
        border: 2px solid var(--color-border);
        text-align: center;
        justify-content: center;
        padding-block: var(--space-4);
    }

    /* Underline effect off on mobile (touch targets don't hover) */
    .nav__link::after { display: none; }

    /* ─ Hero ─ */
    .hero {
        padding-top: calc(var(--space-16) + 70px);
        padding-bottom: var(--space-16);
        min-height: 100svh;
    }

    .hero__name {
        font-size: clamp(2.8rem, 15vw, 4.5rem);
    }

    .hero__title {
        font-size: var(--text-xl);
    }

    .hero__actions {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .hero__actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero__scroll-hint { display: none; }

    /* ─ Skills ─ */
    .skills__grid {
        grid-template-columns: 1fr 1fr;
    }

    /* ─ Projects ─ */
    .project-card {
        padding: var(--space-6) var(--space-5);
    }

    .project-card__top {
        flex-wrap: wrap;
        gap: var(--space-3);
    }

    .project-card__tags {
        flex-wrap: wrap;
    }

    .project-card__title {
        font-size: var(--text-xl);
    }

    .project-card__desc {
        font-size: var(--text-sm);
    }

    /* ─ Blog (already compact, minimal changes needed) ─ */
    .blog-post {
        padding-block: var(--space-5);
    }

    /* ─ Contact ─ */
    .contact__email {
        font-size: var(--text-lg);
        word-break: break-all;
    }

    /* ─ Footer ─ */
    .footer__inner {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }
}

/* ── Small mobile: 420px ── */
@media (max-width: 420px) {
    :root {
        --container-pad: var(--space-4);
    }

    .hero__name {
        font-size: clamp(2.4rem, 16vw, 3.5rem);
    }

    /* Skills: single column */
    .skills__grid {
        grid-template-columns: 1fr;
    }

    .skill-group {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .skill-group:last-child {
        border-bottom: none;
    }

    .section__title {
        font-size: var(--text-2xl);
    }

    .project-card__title {
        font-size: var(--text-lg);
    }

    /* Hero actions: ensure buttons don't overflow */
    .btn {
        font-size: var(--text-xs);
        padding: 0.65rem 1.1rem;
    }
}