/*
  styles.css
  Editorial black & white portfolio — Hillary Uzoka
  Mobile-first · Breakpoints: 640px · 768px · 1024px
*/

/* ═══════════════════════════════════════════
   TOKENS
═══════════════════════════════════════════ */
:root {
  --bg:      #F8F6F2;
  --ink:     #0A0A0A;
  --ink-70:  rgba(10, 10, 10, 0.70);
  --ink-40:  rgba(10, 10, 10, 0.40);
  --ink-20:  rgba(10, 10, 10, 0.20);
  --ink-10:  rgba(10, 10, 10, 0.10);
  --ink-05:  rgba(10, 10, 10, 0.05);

  --serif: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  --sans:  'Inter', system-ui, -apple-system, sans-serif;

  --max-w:  1100px;
  --gutter: clamp(1.5rem, 5vw, 4rem);
  --ease:   0.22s ease;
}

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

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

body {
  font-family: var(--sans);
  font-weight: 400;
  background-color: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img  { display: block; max-width: 100%; height: auto; }
a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }
button { font-family: var(--sans); }

/* ═══════════════════════════════════════════
   ANIMATION SYSTEM
═══════════════════════════════════════════ */

/* ── Custom ease curves ── */
:root {
  --ease-out-expo: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-quart: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Keyframes ── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Header entrance — opacity only (no transform avoids fixed-child stacking context bug) ── */
.site-header {
  animation: fade-in 0.5s ease both;
  animation-delay: 0.05s;
}

/* ── Hero: staggered cascade (CSS-driven, always in view) ── */
.avail-badge    { animation: fade-up 0.7s var(--ease-out-expo) both; animation-delay: 0.18s; }
.eyebrow        { animation: fade-up 0.7s var(--ease-out-expo) both; animation-delay: 0.28s; }
.hero-name      { animation: fade-up 0.8s var(--ease-out-expo) both; animation-delay: 0.38s; }
.hero-statement { animation: fade-up 0.7s var(--ease-out-expo) both; animation-delay: 0.54s; }
.hero-actions   { animation: fade-up 0.7s var(--ease-out-expo) both; animation-delay: 0.68s; }
.hero-metrics   { animation: fade-up 0.7s var(--ease-out-expo) both; animation-delay: 0.82s; }
.hero-photo-wrap { animation: fade-in 1s var(--ease-out-expo) both;  animation-delay: 0.22s; }

/* ── Scroll-reveal base state ── */
[data-anim] {
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity    0.75s var(--ease-out-expo),
    transform  0.75s var(--ease-out-expo),
    border-top-color 0.5s ease;
  transition-delay: var(--anim-delay, 0s);
}

[data-anim].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Section header: border draws in with the reveal */
.section-header[data-anim] {
  border-top-color: transparent;
}
.section-header[data-anim].is-visible {
  border-top-color: var(--ink);
}

/* Directional variants for project splits (desktop only) */
@media (min-width: 768px) {
  [data-anim][data-from="left"]  { transform: translateX(-40px); }
  [data-anim][data-from="right"] { transform: translateX(40px);  }

  [data-anim][data-from="left"].is-visible,
  [data-anim][data-from="right"].is-visible {
    transform: translateX(0);
  }
}

/* Reduced motion — skip everything */
@media (prefers-reduced-motion: reduce) {
  [data-anim],
  .site-header,
  .avail-badge, .eyebrow, .hero-name,
  .hero-statement, .hero-actions, .hero-metrics, .hero-photo-wrap {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
    border-top-color: var(--ink) !important;
  }
}

/* ═══════════════════════════════════════════
   LAYOUT
═══════════════════════════════════════════ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ═══════════════════════════════════════════
   HEADER
═══════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background-color: var(--bg);
  border-bottom: 1px solid var(--ink-10);
  padding: 0.85rem 0;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  transition: opacity var(--ease);
}

.brand:hover { opacity: 0.65; }

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--ink);
  color: var(--bg);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.brand-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand-name {
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
  letter-spacing: 0;
}

.brand-role {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.58rem;
  font-weight: 400;
  color: var(--ink-40);
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: lowercase;
}

/* ── Desktop nav ── */
.nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

.nav a {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--ink-70);
  position: relative;
  padding-bottom: 3px;
  transition: color var(--ease);
}

/* Underline draw on hover */
.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--ink);
  transition: width 0.3s ease;
}

.nav a:hover            { color: var(--ink); }
.nav a:hover::after     { width: 100%; }
.nav-cta                { font-weight: 600 !important; color: var(--ink) !important; }
.nav-cta::after         { display: none !important; }

/* ── Hamburger ── */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.hamburger .bar {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.hamburger[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(3.25px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .bar:nth-child(2) {
  transform: translateY(-3.25px) rotate(-45deg);
}

/* ── Mobile nav overlay ── */
.nav.mobile-open {
  position: fixed;
  inset: 0;
  top: 54px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  padding: 2rem var(--gutter) 3rem;
  background-color: var(--bg);
  border-top: 1px solid var(--ink-10);
  z-index: 999;
  overflow-y: auto;
}

.nav.mobile-open a {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 6vw, 2.5rem);
  font-weight: 400;
  color: var(--ink);
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--ink-10);
  width: 100%;
  letter-spacing: -0.01em;
  transition: padding-left 0.2s ease;
}

.nav.mobile-open a:first-child  { border-top: 1px solid var(--ink-10); }
.nav.mobile-open a::after       { display: none; }
.nav.mobile-open a:hover        { padding-left: 0.75rem; }

/* ═══════════════════════════════════════════
   SECTION BASE
═══════════════════════════════════════════ */
.section {
  padding-top: clamp(4.5rem, 10vw, 8rem);
  padding-bottom: clamp(4.5rem, 10vw, 8rem);
  border-bottom: 1px solid var(--ink-10);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: clamp(3rem, 7vw, 5rem);
  padding-top: 1.4rem;
  border-top: 2px solid var(--ink);
}

.section-num {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 1rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ink-40);
  text-transform: uppercase;
}

.section-num::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ink-20);
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.section-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-70);
  max-width: 60ch;
  margin-bottom: 3rem;
}

/* ═══════════════════════════════════════════
   AVAILABILITY BADGE
═══════════════════════════════════════════ */
.avail-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border: 1px solid var(--ink-20);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-70);
  margin-bottom: 1.5rem;
}

.avail-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
  flex-shrink: 0;
  animation: pulse-dot 2.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.25; }
}

/* ═══════════════════════════════════════════
   HERO
═══════════════════════════════════════════ */
.hero {
  padding-top: clamp(3rem, 9vw, 8rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
  border-bottom: 1px solid var(--ink-10);
}

/* ── Default (< 480px): single column, compact avatar photo at top ── */
.hero-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: start;
}

.hero-text { min-width: 0; }

.hero-photo-wrap {
  order: -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 0;
}

/* Centred portrait on mobile — prominent and professional */
.hero-photo {
  width: 210px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border: 1px solid var(--ink-20);
  background: var(--ink-05);
  margin-bottom: 0.5rem;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.5s ease;
  display: block;
}

.hero-photo:hover img { transform: scale(1.03); }

.hero-photo-caption {
  display: none;
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-40);
  padding-top: 0.6rem;
  border-top: 1px solid var(--ink-10);
}

/* Hero typography */
.eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-bottom: 0.85rem;
}

.hero-name {
  font-family: var(--serif);
  font-size: clamp(2.25rem, 7vw, 4rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.period { color: var(--ink-40); }

.hero-statement {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  line-height: 1.8;
  color: var(--ink-70);
  max-width: 56ch;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: clamp(3rem, 7vw, 5.5rem);
}

/* Outline button */
.btn-outline {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border: 1px solid var(--ink);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink);
  transition: background var(--ease), color var(--ease);
}
.btn-outline:hover { background: var(--ink); color: var(--bg); }

/* Ghost text link */
.btn-ghost {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--ink-70);
  transition: color var(--ease);
}
.btn-ghost:hover { color: var(--ink); }

/* Hero metrics */
.hero-metrics {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 5vw, 4rem);
  flex-wrap: wrap;
  padding-top: 2.5rem;
  border-top: 1px solid var(--ink-10);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.metric-num {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.03em;
}

.metric-label {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-40);
}

.metric-rule {
  width: 1px;
  height: 2.25rem;
  background: var(--ink-20);
  align-self: center;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════
   ABOUT
═══════════════════════════════════════════ */
.about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
}

.about-copy p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink-70);
  margin-bottom: 1.5rem;
}
.about-copy p:last-child { margin-bottom: 0; }

/* Sidebar */
.meta-list { display: flex; flex-direction: column; }

.meta-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.2rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--ink-10);
}
.meta-row:first-child  { padding-top: 0; }
.meta-row:last-child   { border-bottom: none; padding-bottom: 0; }

.meta-row dt {
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-40);
}

.meta-row dd {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--ink-70);
}

.meta-note { font-size: 0.8rem; color: var(--ink-40); }

/* ═══════════════════════════════════════════
   PROJECTS — alternating full-width
═══════════════════════════════════════════ */
.projects-list {
  display: flex;
  flex-direction: column;
}

.project-entry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--ink-10);
}

.project-entry:first-child { border-top: 1px solid var(--ink-10); }

/* Screenshot */
.project-screenshot {
  display: block;
  overflow: hidden;
  border: 1px solid var(--ink-20);
  aspect-ratio: 16 / 10;
  background: var(--ink-05);
  transition: border-color 0.2s ease;
}

.project-screenshot:hover { border-color: var(--ink); }

.project-screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s ease;
  display: block;
}

.project-screenshot:hover img {
  transform: scale(1.025);
}

/* Detail */
.project-index {
  font-family: var(--serif);
  font-size: 1rem;
  font-style: italic;
  color: var(--ink-20);
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}

.project-category {
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-bottom: 0.65rem;
}

.project-name {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3.2vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.project-desc {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-70);
  margin-bottom: 1.5rem;
  max-width: 52ch;
}

/* Problem / Solution block */
.project-ps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--ink-05);
  border: 1px solid var(--ink-10);
  margin-bottom: 1.5rem;
}

.ps-head {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-bottom: 0.45rem;
}

.ps-col p {
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--ink-70);
}

/* Stack pills */
.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.project-stack span {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--ink-20);
  color: var(--ink-70);
  text-transform: uppercase;
}

/* Links */
.project-links {
  display: flex;
  gap: 1.5rem;
}

.proj-link {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  position: relative;
  padding-bottom: 2px;
}

.proj-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--ink);
  transition: width 0.25s ease;
}
.proj-link:hover::after { width: 100%; }

/* ═══════════════════════════════════════════
   SKILLS — icon grid
═══════════════════════════════════════════ */
.skill-category {
  margin-bottom: 2.75rem;
}

.skill-category:last-child {
  margin-bottom: 0;
}

.skill-cat-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-bottom: 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--ink-10);
}

/* ── icon grid ── */
.skill-icon-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--ink-10);
  border: 1px solid var(--ink-10);
}

.skill-icon-card {
  background: var(--bg);
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1.1rem;
  cursor: default;
  transition: background var(--ease);
}

.skill-icon-card:hover {
  background: var(--ink-05);
}

.skill-icon-card i,
.skill-svg-icon {
  font-size: 1.65rem;
  line-height: 1;
  flex-shrink: 0;
  filter: grayscale(100%);
  transition: filter 0.35s ease;
}

.skill-svg-icon {
  width: 1.65rem;
  height: 1.65rem;
  object-fit: contain;
}

.skill-icon-card:hover i,
.skill-icon-card:hover .skill-svg-icon {
  filter: grayscale(0%);
}

.skill-icon-card span {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--ink);
}

/* ── professional tag row ── */
.skill-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag-row span {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--ink-70);
  padding: 0.4rem 1rem;
  border: 1px solid var(--ink-20);
  transition: border-color var(--ease), color var(--ease);
}

/* ═══════════════════════════════════════════
   EXPERIENCE
═══════════════════════════════════════════ */
.exp-list {
  display: flex;
  flex-direction: column;
}

.exp-card {
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--ink-10);
  transition: padding-left 0.2s ease;
}

.exp-card:first-child {
  border-top: 1px solid var(--ink-10);
}

.exp-card:hover { padding-left: 0.5rem; }

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.exp-role {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.exp-company {
  font-size: 0.82rem;
  color: var(--ink-40);
}

.exp-date {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--ink-40);
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 0.15rem;
}

.exp-desc {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--ink-70);
  max-width: 72ch;
}

/* ═══════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════ */
.contact-section { border-bottom: none; }

.title-br { display: none; }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: start;
}

/* Contact lead */
.contact-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-70);
  margin-bottom: 2rem;
  max-width: 40ch;
}

/* Channel list */
.contact-channels {
  display: flex;
  flex-direction: column;
}

.contact-channel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--ink-10);
  font-size: 0.875rem;
  color: var(--ink-70);
  transition: color var(--ease), padding-left 0.2s ease;
}

.contact-channel:first-child { border-top: 1px solid var(--ink-10); }
.contact-channel:hover       { color: var(--ink); padding-left: 0.5rem; }

.ch-arrow {
  font-size: 0.9rem;
  color: var(--ink-40);
  transition: color var(--ease);
}
.contact-channel:hover .ch-arrow { color: var(--ink); }

/* ── WhatsApp form ── */
.wa-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-field label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-70);
}

.form-field input,
.form-field textarea {
  width: 100%;
  background: transparent;
  border: 1px solid var(--ink-20);
  border-radius: 0;
  padding: 0.8rem 1rem;
  font-family: var(--sans);
  font-size: 0.875rem;
  color: var(--ink);
  transition: border-color 0.2s ease;
  appearance: none;
  -webkit-appearance: none;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--ink-40); }

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--ink);
}

.form-error {
  font-size: 0.78rem;
  color: var(--ink-70);
  font-style: italic;
  margin-top: -0.25rem;
}

/* Send button — solid black */
.btn-wa {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.9rem 1.5rem;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
  border-radius: 0;
}

.btn-wa:hover {
  background: transparent;
  color: var(--ink);
}

/* ═══════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════ */
.site-footer {
  border-top: 1px solid var(--ink-10);
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-copy,
.footer-right {
  font-size: 0.78rem;
  color: var(--ink-40);
}

/* ═══════════════════════════════════════════
   MOBILE-ONLY OVERRIDES (max-width: 479px)
═══════════════════════════════════════════ */
@media (max-width: 479px) {

  /* ── Header: compact but readable ── */
  .brand-mark {
    width: 2rem;
    height: 2rem;
    font-size: 0.62rem;
  }

  .brand-role { display: none; }       /* hide role, keep name */

  .brand-name { font-size: 0.75rem; }

  /* ── Mobile nav links ── */
  .nav.mobile-open a {
    font-size: 1.5rem;
    padding: 0.75rem 0;
  }

  /* ── Hero: tighter top ── */
  .hero { padding-top: 2.5rem; }

  /* ── Badge ── */
  .avail-badge {
    font-size: 0.64rem;
    padding: 0.4rem 0.85rem;
  }

  /* ── Eyebrow ── */
  .eyebrow {
    font-size: 0.63rem;
    letter-spacing: 0.1em;
  }

  /* ── Metrics ── */
  .metric-num   { font-size: 1.6rem; }
  .metric-label { font-size: 0.58rem; }

}

/* ═══════════════════════════════════════════
   RESPONSIVE — 480px  (hero gets side photo column)
═══════════════════════════════════════════ */
@media (min-width: 480px) {

  /* Hero: text left, portrait photo right */
  .hero-layout {
    grid-template-columns: 1fr 110px;
    gap: 1.75rem;
  }

  .hero-photo-wrap {
    order: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
    width: 100%;
  }

  .hero-photo {
    width: 100%;      /* fill the 110px grid column */
    aspect-ratio: 3 / 4;
  }

}

/* ═══════════════════════════════════════════
   RESPONSIVE — 640px
═══════════════════════════════════════════ */
@media (min-width: 640px) {

  /* Skills icon grid: 3 cols at 640px */
  .skill-icon-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Hero: hide brand text at 640px and below — show at 640px+ */
  .hero-layout {
    grid-template-columns: 1fr 140px;
    gap: 2.5rem;
  }

}

/* ═══════════════════════════════════════════
   RESPONSIVE — 768px  (hero 2-col + project alternating)
═══════════════════════════════════════════ */
@media (min-width: 768px) {

  /* Skills icon grid: 4 cols at 768px */
  .skill-icon-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Hero: text left, photo right — sticky portrait */
  .hero-layout {
    grid-template-columns: 1fr 220px;
    gap: 4rem;
    align-items: start;
  }

  .hero-photo-wrap {
    position: sticky;
    top: 5rem;
    width: 100%;
  }

  /* Show caption on desktop */
  .hero-photo-caption { display: block; }

  .title-br { display: inline; }

  /* Projects: screenshot left, detail right (alternating) */
  .project-entry {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }

  /* .reverse — screenshot goes right, detail goes left */
  .project-entry.reverse > .project-screenshot { order: 2; }
  .project-entry.reverse > .project-detail      { order: 1; }

  /* Experience: date pushed right */
  .exp-header {
    flex-wrap: nowrap;
  }

  /* Contact: 2-col */
  .contact-layout {
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
  }

}

/* ═══════════════════════════════════════════
   RESPONSIVE — 1024px
═══════════════════════════════════════════ */
@media (min-width: 1024px) {

  /* Show desktop nav, hide hamburger */
  .nav       { display: flex; }
  .hamburger { display: none; }

  /* Hero: wider photo column at 1024px */
  .hero-layout {
    grid-template-columns: 1fr 280px;
    gap: 5rem;
  }

  /* Projects: wider gaps */
  .project-entry { gap: 5rem; }

  /* About: text + sidebar */
  .about-layout {
    grid-template-columns: 3fr 1.6fr;
    gap: 6rem;
    align-items: start;
  }

  /* Contact: more breathing room */
  .contact-layout { gap: 6.5rem; }

}