/* ============================================================
   TTKLabs — Shared Stylesheet
   ttklabs.css
   ============================================================ */

/* ---- Reset & Variables ------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #080a0f;
  --bg2: #0d1117;
  --bg3: #131820;
  --accent: #00e5c0;
  --text: #e8edf5;
  --muted: #6b7a8d;
  --border: rgba(255, 255, 255, 0.07);
  --mono: 'Space Mono', monospace;
  --sans: 'DM Sans', sans-serif;
  --pad-x: 4rem;
  --pad-section: 6rem var(--pad-x);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- Typography ------------------------------------------- */
h1 {
  font-family: var(--mono);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

h2 {
  font-family: var(--mono);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 2rem;
}

.section-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

/* ---- Buttons ---------------------------------------------- */
.btn-primary {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.9rem 2rem;
  background: var(--accent);
  color: #080a0f;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-weight: 700;
  transition: opacity 0.2s, transform 0.15s;
  display: inline-block;
}

.btn-primary:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.btn-ghost {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.9rem 2rem;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
  display: inline-block;
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* ---- Navigation ------------------------------------------- */
nav.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--pad-x);
  background: rgba(8, 10, 15, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo img {
  height: 34px;
  width: auto;
  display: block;
}

.nav-logo-text {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
}

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

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: transform 0.25s, opacity 0.2s;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Hero background effects ------------------------------ */
.grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.grid-fade {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 192, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ---- Animations ------------------------------------------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

@keyframes scrollPulse {

  0%,
  100% {
    opacity: 0.3;
  }

  50% {
    opacity: 1;
  }
}

/* ============================================================
   INDEX PAGE
   ============================================================ */

/* Hero */
.hero-index {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem var(--pad-x) 4rem;
  position: relative;
  overflow: hidden;
}

.hero-index .grid-fade {
  background: radial-gradient(ellipse 80% 60% at 60% 40%, transparent 30%, var(--bg) 80%);
}

.hero-index .glow {
  right: -100px;
  top: 50%;
  transform: translateY(-50%);
}

.hero-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: fadeUp 0.6s ease both;
}

.hero-label::before {
  content: '';
  display: inline-block;
  width: 2.5rem;
  height: 1px;
  background: var(--accent);
}

.hero-index h1 {
  font-size: clamp(3.5rem, 8vw, 7.5rem);
  max-width: 14ch;
  animation: fadeUp 0.6s 0.1s ease both;
}

.hero-index h1 span {
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 45ch;
  margin-bottom: 3rem;
  font-weight: 300;
  line-height: 1.8;
  animation: fadeUp 0.6s 0.2s ease both;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeUp 0.6s 0.3s ease both;
}

.hero-stats {
  position: absolute;
  right: var(--pad-x);
  bottom: 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  text-align: right;
  animation: fadeUp 0.6s 0.4s ease both;
}

.stat-val {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.stat-lbl {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  margin-top: 0.15rem;
}

.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.scroll-hint::after {
  content: '';
  display: inline-block;
  width: 1px;
  height: 2rem;
  background: var(--muted);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* Focus section */
.focus-section {
  background: var(--bg2);
  padding: var(--pad-section);
}

.section-desc {
  font-size: 1rem;
  color: var(--muted);
  max-width: 50ch;
  font-weight: 300;
  line-height: 1.8;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 4rem;
  background: var(--border);
}

.focus-card {
  background: var(--bg2);
  padding: 2.5rem;
  transition: background 0.2s;
}

.focus-card:hover {
  background: var(--bg3);
}

.focus-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.focus-title {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.focus-body {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  font-weight: 300;
}

/* Projects section */
.projects-section {
  padding: var(--pad-section);
}

.projects-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 4rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
}

.project-card {
  background: var(--bg);
  padding: 2.5rem;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card:hover {
  background: var(--bg2);
}

.project-card.featured {
  grid-column: span 2;
}

.project-tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.project-name {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 1.5rem;
}

.project-arrow {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}

/* About section */
.about-section {
  background: var(--bg2);
  padding: var(--pad-section);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.about-big {
  font-family: var(--mono);
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.about-body {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.9;
  font-weight: 300;
  margin-top: 1.5rem;
}

.about-link {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-decoration: none;
  text-transform: uppercase;
  margin-top: 2rem;
  display: inline-block;
  transition: opacity 0.2s;
}

.about-link:hover {
  opacity: 0.7;
}

/* Contact section */
.contact-section {
  padding: var(--pad-section);
}

.contact-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  flex-wrap: wrap;
}

.contact-big {
  font-family: var(--mono);
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

/* ---- Footer (shared) -------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem var(--pad-x) 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand img {
  height: 38px;
  width: auto;
}

.footer-brand-name {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 300;
  margin-top: 0.5rem;
  max-width: 32ch;
}

.footer-nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-nav a {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: var(--text);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.footer-copy {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* Simple footer (project pages) */
.site-footer.footer-simple {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: 2.5rem var(--pad-x);
  gap: 1rem;
}

/* Social icons */
.social-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
  flex-shrink: 0;
}

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

.social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ============================================================
   PROJECT PAGES (shared)
   ============================================================ */

.hero-project {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 8rem var(--pad-x) 4rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-project .grid-fade {
  background: radial-gradient(ellipse 100% 80% at 50% 100%, var(--bg) 40%, transparent 80%);
}

.hero-project .glow {
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}

.breadcrumb {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 2rem;
  animation: fadeUp 0.5s ease both;
}

.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

.breadcrumb a:hover {
  opacity: 0.7;
}

.project-type {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: fadeUp 0.5s 0.1s ease both;
}

.project-type::before {
  content: '';
  display: inline-block;
  width: 2.5rem;
  height: 1px;
  background: var(--accent);
}

.hero-project h1 {
  animation: fadeUp 0.5s 0.15s ease both;
}

.hero-meta {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  animation: fadeUp 0.5s 0.25s ease both;
}

.meta-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.meta-val {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text);
}

/* Content wrapper */
.page-content {
  max-width: 1400px;
  margin: 0 auto;
}

/* Overview */
.overview {
  padding: 5rem var(--pad-x);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.overview-lead {
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--text);
}

.overview-body {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.9;
  font-weight: 300;
}

.overview-body p+p {
  margin-top: 1rem;
}

/* Specs */
.specs-section {
  background: var(--bg2);
  padding: 5rem var(--pad-x);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 3rem;
}

.spec-card {
  background: var(--bg2);
  padding: 2rem;
  transition: background 0.2s;
}

.spec-card:hover {
  background: var(--bg3);
}

.spec-num {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.spec-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

/* Features */
.features-section {
  padding: 5rem var(--pad-x);
}

.features-section.on-bg2 {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features-list {
  margin-top: 3rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 3rem 1fr 2fr;
  gap: 2rem;
  align-items: start;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.feature-row:first-child {
  border-top: 1px solid var(--border);
}

.feature-idx {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-top: 0.2rem;
}

.feature-name {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 700;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  font-weight: 300;
}

/* How it works (GridMind) */
.how-section {
  padding: 5rem var(--pad-x);
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 3rem;
}

.how-card {
  background: var(--bg);
  padding: 2.5rem;
  transition: background 0.2s;
}

.how-card:hover {
  background: var(--bg2);
}

.how-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.how-title {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.how-body {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  font-weight: 300;
}

/* Challenge (PulseKit) */
.challenge-section {
  background: var(--bg2);
  padding: 5rem var(--pad-x);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.challenge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  margin-top: 3rem;
}

.challenge-card {
  background: var(--bg2);
  padding: 2.5rem;
  transition: background 0.2s;
}

.challenge-card:hover {
  background: var(--bg3);
}

.challenge-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.challenge-title {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.challenge-body {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  font-weight: 300;
}

/* Tech stack */
.tech-section {
  padding: 5rem var(--pad-x);
}

.tech-section.on-bg2 {
  background: var(--bg2);
  border-top: 1px solid var(--border);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 3rem;
}

.tech-card {
  background: var(--bg);
  padding: 1.75rem 2rem;
  transition: background 0.2s;
}

.tech-section.on-bg2 .tech-card {
  background: var(--bg2);
}

.tech-card:hover {
  background: var(--bg3);
}

.tech-category {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.tech-name {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tech-detail {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 300;
}

/* CTA */
.cta-section {
  padding: 6rem var(--pad-x);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.cta-text h2 {
  margin-bottom: 0.5rem;
}

.cta-text p {
  color: var(--muted);
  font-weight: 300;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Next project */
.next-project {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2.5rem var(--pad-x);
  background: var(--bg2);
  border-top: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
}

.next-project:hover {
  background: var(--bg3);
}

.next-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.next-name {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 700;
}

.next-arrow {
  font-family: var(--mono);
  font-size: 1.5rem;
  color: var(--accent);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  :root {
    --pad-x: 2rem;
  }

  .focus-grid {
    grid-template-columns: 1fr 1fr;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .overview {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .how-grid {
    grid-template-columns: 1fr 1fr;
  }

  .challenge-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --pad-x: 1.5rem;
    --pad-section: 4rem var(--pad-x);
  }

  /* Nav — mobile drawer */
  nav.site-nav {
    padding: 1rem var(--pad-x);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 62px;
    left: 0;
    right: 0;
    background: rgba(8, 10, 15, 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.9rem var(--pad-x);
    font-size: 0.8rem;
    border-bottom: 1px solid var(--border);
  }

  /* Hero index */
  .hero-index {
    padding: 6rem var(--pad-x) 3rem;
  }

  .hero-stats {
    position: static;
    margin-top: 2.5rem;
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
    gap: 2rem;
  }

  .scroll-hint {
    display: none;
  }

  /* Hero project */
  .hero-project {
    padding: 6rem var(--pad-x) 3rem;
    min-height: auto;
  }

  .hero-meta {
    gap: 1.5rem;
  }

  /* Focus */
  .focus-grid {
    grid-template-columns: 1fr;
  }

  /* Projects */
  .projects-section {
    padding: 4rem var(--pad-x);
  }

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

  .project-card.featured {
    grid-column: span 1;
  }

  .projects-header {
    margin-bottom: 2rem;
  }

  /* About */
  .about-section {
    padding: 4rem var(--pad-x);
  }

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

  /* Contact */
  .contact-section {
    padding: 4rem var(--pad-x);
  }

  .contact-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }

  /* Specs */
  .specs-section {
    padding: 3rem var(--pad-x);
  }

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

  /* Features */
  .features-section {
    padding: 3rem var(--pad-x);
  }

  .feature-row {
    grid-template-columns: 2.5rem 1fr;
    gap: 1rem;
  }

  .feature-desc {
    grid-column: 2;
    margin-top: 0.25rem;
  }

  /* How */
  .how-section {
    padding: 3rem var(--pad-x);
  }

  .how-grid {
    grid-template-columns: 1fr;
  }

  /* Challenge */
  .challenge-section {
    padding: 3rem var(--pad-x);
  }

  /* Tech */
  .tech-section {
    padding: 3rem var(--pad-x);
  }

  .tech-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* CTA */
  .cta-section {
    padding: 4rem var(--pad-x);
    flex-direction: column;
    align-items: flex-start;
  }

  /* Next project */
  .next-project {
    padding: 2rem var(--pad-x);
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .next-arrow {
    align-self: flex-end;
  }

  /* Footer */
  .site-footer {
    padding: 2.5rem var(--pad-x) 2rem;
  }

  .footer-top {
    flex-direction: column;
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .site-footer.footer-simple {
    flex-direction: column;
    gap: 1rem;
    padding: 2rem var(--pad-x);
  }
}

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

  .tech-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.25rem;
  }
}

/* ============================================================
   PROJECTS PAGE
   ============================================================ */

/* Hero */
.projects-page-hero {
  padding: 10rem var(--pad-x) 4rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.projects-page-hero .grid-fade {
  background: radial-gradient(ellipse 100% 80% at 50% 100%, var(--bg) 40%, transparent 80%);
}

.projects-page-hero .glow {
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}

.hero-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.projects-page-hero h1 {
  font-size: clamp(3rem, 7vw, 6rem);
  animation: fadeUp 0.5s 0.1s ease both;
}

.hero-count {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  animation: fadeUp 0.5s 0.25s ease both;
  text-align: right;
}

.hero-count span {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 0.4rem;
}

/* Filter bar */
.filter-bar {
  padding: 2rem var(--pad-x);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  margin-right: 0.5rem;
}

.filter-btn {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.filter-btn:hover {
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--text);
}

.filter-btn.active {
  background: var(--accent);
  color: #080a0f;
  border-color: var(--accent);
}

/* Projects table */
.projects-table {
  border-bottom: 1px solid var(--border);
}

.project-row {
  display: grid;
  grid-template-columns: 1fr 14rem 10rem 6rem;
  gap: 2rem;
  align-items: center;
  padding: 2.25rem var(--pad-x);
  border-top: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
}

.project-row:hover {
  background: var(--bg2);
}

.project-row:hover .row-arrow {
  opacity: 1;
  transform: translateX(0);
}

.row-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}

.row-tag {
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border);
  color: var(--muted);
}

.row-tag.highlight {
  border-color: var(--accent);
  color: var(--accent);
}

.row-name {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.row-desc {
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.6;
  max-width: 55ch;
}

.row-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.row-meta-label {
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.6;
  margin-bottom: 0.3rem;
}

.status-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  color: var(--muted);
}

.status-pill.active {
  border-color: var(--accent);
  color: var(--accent);
}

.status-pill.research {
  border-color: #0072ff;
  color: #0072ff;
}

.status-pill.design {
  border-color: #9b59b6;
  color: #9b59b6;
}

.row-arrow {
  font-family: var(--mono);
  font-size: 1.2rem;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.2s, transform 0.2s;
  text-align: right;
}

.project-row.featured-row {
  background: var(--bg2);
}

.project-row.featured-row:hover {
  background: var(--bg3);
}

/* Coming soon */
.coming-soon-section {
  padding: 5rem var(--pad-x);
  background: var(--bg2);
  border-top: 1px solid var(--border);
}

.coming-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 3rem;
}

.coming-card {
  background: var(--bg2);
  padding: 2rem 2.5rem;
  transition: background 0.2s;
}

.coming-card:hover {
  background: var(--bg3);
}

.coming-label {
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.6;
  margin-bottom: 1rem;
}

.coming-name {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--muted);
}

.coming-desc {
  font-size: 0.85rem;
  color: var(--muted);
  opacity: 0.6;
  font-weight: 300;
  line-height: 1.6;
}

.coming-tag {
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border);
  color: var(--muted);
  opacity: 0.5;
  display: inline-block;
  margin-top: 1rem;
}

/* Projects page CTA */
.projects-cta {
  padding: 6rem var(--pad-x);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.projects-cta h2 {
  margin-bottom: 0.5rem;
}

.projects-cta p {
  color: var(--muted);
  font-weight: 300;
}

/* ---- Responsive: projects page additions ---- */
@media (max-width: 900px) {
  .project-row {
    grid-template-columns: 1fr 8rem;
    gap: 1.5rem;
  }

  .row-meta,
  .row-status {
    display: none;
  }

  .row-arrow {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 768px) {
  .projects-page-hero {
    padding: 8rem var(--pad-x) 3rem;
  }

  .project-row {
    grid-template-columns: 1fr 3rem;
    gap: 1rem;
    padding: 1.75rem var(--pad-x);
  }

  .coming-grid {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    padding: 1.5rem var(--pad-x);
    gap: 0.4rem;
  }

  .hero-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-count {
    text-align: left;
  }

  .projects-cta {
    flex-direction: column;
    align-items: flex-start;
    padding: 4rem var(--pad-x);
  }
}