/* W8A — Personal site
   Direction: cool mist + deep slate + light/dark blue accent
   Fonts: Syne (display) + Figtree (body)
*/

:root {
  --bg: #e8eef2;
  --bg-deep: #d5e0e8;
  --surface: rgba(255, 255, 255, 0.55);
  --ink: #14202a;
  --ink-soft: #3d5160;
  --muted: #6a7f8f;
  --accent: #4a9ad4;
  --accent-deep: #1a4f8c;
  --accent-glow: rgba(74, 154, 212, 0.22);
  --line: rgba(20, 32, 42, 0.12);
  --line-strong: rgba(20, 32, 42, 0.22);
  --white: #f7fafb;
  --header-h: 4.25rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
  --font-display: "Syne", sans-serif;
  --font-body: "Figtree", sans-serif;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(74, 154, 212, 0.16), transparent 55%),
    radial-gradient(900px 500px at 95% 15%, rgba(26, 79, 140, 0.14), transparent 50%),
    linear-gradient(180deg, #f0f5f8 0%, var(--bg) 35%, #dfe8ee 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: var(--accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--accent);
}

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

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0;
}

p {
  margin: 0 0 1rem;
}

p:last-child {
  margin-bottom: 0;
}

.page-grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9998;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* —— Header —— */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.35s ease, backdrop-filter 0.35s ease, box-shadow 0.35s ease;
}

.site-header.is-scrolled {
  background: rgba(240, 245, 248, 0.82);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}

.header-inner {
  max-width: calc(var(--max) + 4rem);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  line-height: 1;
}

a[data-section],
.section-link {
  cursor: pointer;
}

.logo-img {
  width: 3rem;
  height: 3rem;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.site-nav .section-link {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  border-radius: 2px;
  position: relative;
  transition: color 0.25s ease;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: var(--font-body);
}

.site-nav .section-link::after {
  content: "";
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
  pointer-events: none;
}

.site-nav .section-link:hover,
.site-nav .section-link.is-active {
  color: var(--ink);
}

.site-nav .section-link.is-active::after,
.site-nav .section-link:hover::after {
  transform: scaleX(1);
}

.site-nav .section-link.nav-cta {
  margin-left: 0.35rem;
  background: var(--ink);
  color: var(--white);
  padding: 0.55rem 1rem;
}

.site-nav .section-link.nav-cta::after {
  display: none;
}

.site-nav .section-link.nav-cta:hover {
  background: var(--accent-deep);
  color: var(--white);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
  position: relative;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 1.35rem;
  height: 2px;
  background: var(--ink);
  margin: 0.35rem auto;
  transition: transform 0.35s var(--ease-out), opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.45rem;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1.5px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.3s var(--ease-spring), background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

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

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--ink);
  color: var(--white);
}

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

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.btn-full {
  width: 100%;
}

/* —— Sections —— */
.section {
  padding: 6.5rem 0;
  position: relative;
  overflow: hidden;
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-head {
  max-width: 36rem;
  margin-bottom: 3.5rem;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin-bottom: 0.85rem;
  color: var(--ink);
}

.section-desc {
  color: var(--ink-soft);
  font-size: 1.08rem;
  margin: 0;
}

/* —— Reveal —— */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity 0.85s var(--ease-out),
    transform 0.85s var(--ease-out);
}

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

.reveal[data-reveal] + .reveal[data-reveal] {
  transition-delay: 0.08s;
}

.skills-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.skills-grid .reveal:nth-child(3) { transition-delay: 0.18s; }
.skills-grid .reveal:nth-child(4) { transition-delay: 0.26s; }
.services-list .reveal:nth-child(2) { transition-delay: 0.06s; }
.services-list .reveal:nth-child(3) { transition-delay: 0.12s; }
.services-list .reveal:nth-child(4) { transition-delay: 0.18s; }
.services-list .reveal:nth-child(5) { transition-delay: 0.24s; }
.services-list .reveal:nth-child(6) { transition-delay: 0.3s; }
.services-list .reveal:nth-child(7) { transition-delay: 0.36s; }
.projects-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.projects-grid .reveal:nth-child(3) { transition-delay: 0.18s; }
.projects-grid .reveal:nth-child(4) { transition-delay: 0.26s; }

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-start;
  padding: calc(var(--header-h) + 8rem) 1.5rem 4rem;
  overflow: hidden;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-mesh {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, rgba(20, 32, 42, 0.04) 0%, transparent 45%),
    linear-gradient(to top, rgba(232, 238, 242, 0.72) 0%, rgba(232, 238, 242, 0.2) 42%, transparent 70%),
    radial-gradient(ellipse 80% 55% at 70% 40%, rgba(74, 154, 212, 0.22), transparent 60%),
    radial-gradient(ellipse 50% 40% at 20% 60%, rgba(26, 79, 140, 0.16), transparent 55%);
  animation: mesh-drift 18s ease-in-out infinite alternate;
}

@keyframes mesh-drift {
  from { transform: scale(1) translate(0, 0); }
  to { transform: scale(1.06) translate(-1.5%, 1%); }
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  animation: orb-float 14s var(--ease-out) infinite alternate;
}

.hero-orb--a {
  width: min(42vw, 420px);
  height: min(42vw, 420px);
  top: 12%;
  right: 8%;
  background: rgba(74, 154, 212, 0.32);
}

.hero-orb--b {
  width: min(30vw, 280px);
  height: min(30vw, 280px);
  top: 38%;
  left: 5%;
  background: rgba(26, 79, 140, 0.22);
  animation-delay: -4s;
  animation-duration: 17s;
}

@keyframes orb-float {
  from { transform: translate(0, 0); }
  to { transform: translate(18px, -24px); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 32, 42, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 32, 42, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 55% at 65% 35%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 65% 35%, black 20%, transparent 75%);
  animation: grid-shift 22s linear infinite;
}

@keyframes grid-shift {
  from { background-position: 0 0; }
  to { background-position: 64px 32px; }
}

.code-rain {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: flex;
  justify-content: space-around;
  gap: 0.5rem;
  padding: 0 1.5%;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.4;
}

.code-rain--page {
  position: fixed;
  z-index: 0;
  opacity: 0.28;
}

.code-col {
  flex: 1 1 0;
  max-width: 11rem;
  font-family: "IBM Plex Mono", "Consolas", "Menlo", ui-monospace, monospace;
  font-size: clamp(0.55rem, 1vw, 0.7rem);
  line-height: 1.55;
  color: rgba(26, 79, 140, 0.5);
  white-space: pre;
  animation: code-fall linear infinite;
  will-change: transform;
}

.code-col span {
  display: block;
  opacity: 0.32;
}

.code-col span.is-hot {
  color: var(--accent-deep);
  opacity: 0.9;
  text-shadow: 0 0 12px rgba(74, 154, 212, 0.3);
}

.code-col span.is-mid {
  color: var(--accent);
  opacity: 0.65;
}

@keyframes code-fall {
  from { transform: translateY(-45%); }
  to { transform: translateY(5%); }
}

.section-inner,
.hero-content,
.footer-inner {
  position: relative;
  z-index: 1;
}

.hero-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.45;
  z-index: 1;
}

.draw-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw-path 2.8s var(--ease-out) 0.4s forwards;
}

.draw-line--delay {
  stroke: rgba(60, 100, 130, 0.7);
  animation-delay: 0.9s;
}

@keyframes draw-path {
  to { stroke-dashoffset: 0; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  isolation: isolate;
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  isolation: isolate;
}

.section-logo-watermark {
  position: absolute;
  z-index: -1;
  right: -2%;
  top: 50%;
  width: min(50vw, 480px);
  height: min(50vw, 480px);
  transform: translateY(-50%);
  background: url("../img/w8a-logo.png") center / contain no-repeat;
  opacity: 0.12;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 55% 55% at 50% 50%, black 15%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 55% 55% at 50% 50%, black 15%, transparent 72%);
}

.section-logo-watermark--left {
  right: auto;
  left: -2%;
}

.hero-content .section-logo-watermark {
  width: min(58vw, 560px);
  height: min(58vw, 560px);
  transform: translateY(-42%);
  opacity: 0.14;
  animation: section-logo-fade 1.2s var(--ease-out) 0.3s both;
}

@keyframes section-logo-fade {
  from {
    opacity: 0;
    transform: translateY(-42%) scale(0.94);
  }
  to {
    opacity: 0.14;
    transform: translateY(-42%) scale(1);
  }
}

.brand-lockup {
  margin-bottom: 1.25rem;
}

.brand-name {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.5rem, 12vw, 7.5rem);
  letter-spacing: -0.06em;
  line-height: 0.9;
  color: var(--ink);
  background: linear-gradient(135deg, var(--ink) 40%, var(--accent-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.reveal.is-visible .brand-name {
  animation: brand-in 1.1s var(--ease-out) both;
}

@keyframes brand-in {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.96);
    letter-spacing: 0.08em;
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    letter-spacing: -0.06em;
  }
}

.hero-title {
  font-size: clamp(1.65rem, 3.8vw, 2.65rem);
  font-weight: 700;
  max-width: 16ch;
  margin-bottom: 1.15rem;
  color: var(--ink);
}

.hero-lede {
  max-width: 34rem;
  color: var(--ink-soft);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.scroll-cue {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 1.5rem;
  height: 2.75rem;
  display: flex;
  justify-content: center;
  text-decoration: none;
}

.scroll-cue-line {
  width: 1.5px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  background-size: 100% 200%;
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { background-position: 0 0; opacity: 0.4; }
  50% { background-position: 0 100%; opacity: 1; }
}

/* Stagger hero reveals after brand */
.hero .reveal:nth-child(2) { transition-delay: 0.15s; }
.hero .reveal:nth-child(3) { transition-delay: 0.28s; }
.hero .reveal:nth-child(4) { transition-delay: 0.4s; }

/* —— About —— */
.about-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: start;
}

.about-copy {
  font-size: 1.08rem;
  color: var(--ink-soft);
}

.about-copy strong {
  color: var(--ink);
  font-weight: 600;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--line);
  padding-left: 1.35rem;
}

.timeline > li {
  position: relative;
  padding: 0 0 1.75rem;
}

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

.timeline > li::before {
  content: "";
  position: absolute;
  left: calc(-1.35rem - 5px);
  top: 0.35rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  transition: transform 0.35s var(--ease-spring), background 0.25s ease;
}

.timeline > li:hover::before {
  background: var(--accent);
  transform: scale(1.25);
}

.timeline-year {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.timeline-role {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.timeline-note {
  display: block;
  font-size: 0.92rem;
  color: var(--muted);
}

.timeline-bullets {
  margin: 0.35rem 0 0;
  padding-left: 1.1rem;
  list-style: disc;
}

.timeline-bullets li {
  font-size: 0.92rem;
  color: var(--muted);
  padding: 0 0 0.35rem;
}

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

/* —— Skills —— */
.skills {
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.18), transparent);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem 1.75rem;
}

.skill-block h3 {
  font-size: 1.05rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.skill-block ul {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.skill-block li {
  font-size: 0.98rem;
  color: var(--ink-soft);
  padding-left: 1rem;
  position: relative;
  transition: color 0.25s ease, transform 0.25s var(--ease-out);
}

.skill-block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 1px;
}

.skill-block li:hover {
  color: var(--ink);
  transform: translateX(4px);
}

/* —— Services —— */
.services-list {
  display: flex;
  flex-direction: column;
}

.service-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
  transition: background 0.35s ease, padding 0.35s var(--ease-out);
}

.service-row:last-child {
  border-bottom: 1px solid var(--line);
}

.service-row:hover {
  padding-left: 0.75rem;
  background: linear-gradient(90deg, var(--accent-glow), transparent 55%);
}

.service-index {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: -0.02em;
  padding-top: 0.15rem;
}

.service-body h3 {
  font-size: 1.35rem;
  margin-bottom: 0.45rem;
}

.service-body p {
  color: var(--ink-soft);
  max-width: 42rem;
  margin: 0;
}

/* —— Projects —— */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem 2rem;
}

.project {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.project-visual {
  aspect-ratio: 16 / 10;
  width: 100%;
  position: relative;
  overflow: hidden;
  transform: scale(1);
  transition: transform 0.6s var(--ease-out);
}

.project:hover .project-visual {
  transform: scale(1.02);
}

.project-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, transparent 40%, rgba(20, 32, 42, 0.15));
  pointer-events: none;
}

.project-visual--1 {
  background:
    radial-gradient(circle at 30% 40%, rgba(74, 154, 212, 0.55), transparent 45%),
    radial-gradient(circle at 75% 60%, rgba(26, 79, 140, 0.45), transparent 40%),
    linear-gradient(145deg, #1a2a35, #2a4a68);
  animation: visual-shift 12s ease-in-out infinite alternate;
}

.project-visual--2 {
  background:
    radial-gradient(ellipse at 70% 30%, rgba(74, 154, 212, 0.45), transparent 50%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 18px,
      rgba(255, 255, 255, 0.04) 18px,
      rgba(255, 255, 255, 0.04) 19px
    ),
    linear-gradient(160deg, #1e3340, #1a4f8c);
}

.project-visual--3 {
  background:
    radial-gradient(circle at 40% 70%, rgba(100, 160, 210, 0.45), transparent 45%),
    linear-gradient(200deg, #243844 0%, #3a5a78 100%);
}

.project-visual--4 {
  background:
    radial-gradient(circle at 60% 40%, rgba(74, 154, 212, 0.5), transparent 40%),
    conic-gradient(from 210deg at 50% 50%, #1a3038, #1a4f8c, #2a4558, #1a3038);
}

@keyframes visual-shift {
  from { filter: hue-rotate(0deg); }
  to { filter: hue-rotate(12deg); }
}

.project-meta h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.project-meta p {
  color: var(--ink-soft);
  margin-bottom: 0.85rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.85rem;
}

.project-tags li {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 0.1rem;
}

/* —— Contact —— */
.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3rem;
  align-items: start;
}

.contact-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--ink);
}

.contact-link {
  display: block;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  margin-bottom: 0.55rem;
  transition: color 0.25s ease, transform 0.25s var(--ease-out);
}

.contact-link:hover {
  color: var(--accent-deep);
  transform: translateX(4px);
}

.contact-note {
  margin-top: 1.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  padding: 0;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-row--hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.form-row label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.form-row input,
.form-row textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
  border: 1.5px solid var(--line);
  border-radius: 2px;
  padding: 0.85rem 1rem;
  outline: none;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-row input.is-invalid,
.form-row textarea.is-invalid {
  border-color: #b33a3a;
}

.form-alert {
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  border-radius: 2px;
}

.form-alert--success {
  background: rgba(74, 154, 212, 0.12);
  color: var(--accent-deep);
  border: 1px solid rgba(74, 154, 212, 0.35);
}

.form-alert--error {
  background: rgba(179, 58, 58, 0.1);
  color: #8a2a2a;
  border: 1px solid rgba(179, 58, 58, 0.3);
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.5rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.04em;
  text-decoration: none;
  color: var(--ink);
}

.footer-logo {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
  flex-shrink: 0;
}

.footer-copy {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.footer-copy a {
  color: var(--ink-soft);
  text-decoration: none;
}

.footer-copy a:hover {
  color: var(--accent);
}

/* —— Scroll to top —— */
.scroll-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 90;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--line-strong);
  border-radius: 2px;
  background: rgba(240, 245, 248, 0.92);
  backdrop-filter: blur(10px);
  color: var(--ink);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition:
    opacity 0.35s var(--ease-out),
    visibility 0.35s var(--ease-out),
    transform 0.35s var(--ease-spring),
    background 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease;
}

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

.scroll-top:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: var(--white);
  transform: translateY(-2px);
}

.scroll-top:active {
  transform: translateY(0);
}

.scroll-top[hidden] {
  display: flex;
}

/* —— Reduced motion —— */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    background: rgba(240, 245, 248, 0.97);
    backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.35s ease, visibility 0.35s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }

  .site-nav .section-link {
    font-size: 1.35rem;
    padding: 0.65rem 1rem;
    letter-spacing: 0.06em;
  }

  .site-nav .section-link.nav-cta {
    margin: 0.75rem 0 0;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .skills-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem 1.25rem;
  }

  .service-row {
    grid-template-columns: 3rem 1fr;
  }

  .section {
    padding: 4.5rem 0;
  }

  .hero {
    align-items: flex-start;
    padding-top: calc(var(--header-h) + 8rem);
    padding-bottom: 4rem;
  }

  .hero-content .section-logo-watermark {
    right: -8%;
    width: min(72vw, 320px);
    height: min(72vw, 320px);
    opacity: 0.1;
    mask-image: radial-gradient(ellipse 50% 50% at 50% 50%, black 10%, transparent 68%);
    -webkit-mask-image: radial-gradient(ellipse 50% 50% at 50% 50%, black 10%, transparent 68%);
  }

  .section-logo-watermark {
    width: min(65vw, 280px);
    height: min(65vw, 280px);
    opacity: 0.09;
    mask-image: radial-gradient(ellipse 50% 50% at 50% 50%, black 10%, transparent 68%);
    -webkit-mask-image: radial-gradient(ellipse 50% 50% at 50% 50%, black 10%, transparent 68%);
  }

  .section-logo-watermark--left {
    left: -8%;
  }
}

@media (max-width: 480px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}