/* ============================================
   ARCTIX CORP — Premium Digital Experience
   style.css
   ============================================ */

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

:root {
  --bg:       #060608;
  --bg2:      #0d0d10;
  --bg3:      #131316;
  --bg4:      #1a1a1e;
  --cyan:     #00d2ff;
  --cyan-dim: rgba(0, 210, 255, 0.15);
  --cyan-glow:rgba(0, 210, 255, 0.08);
  --text:     #f0eff5;
  --text2:    #8a8996;
  --text3:    #4a4958;
  --line:     rgba(255,255,255,0.06);
  --line2:    rgba(255,255,255,0.12);
  --font-sans:  'Space Grotesk', sans-serif;
  --font-display:'Bebas Neue', cursive;
  --font-serif: 'Playfair Display', serif;
  --font-mono:  'JetBrains Mono', monospace;
  --ease:     cubic-bezier(0.23, 1, 0.32, 1);
  --ease2:    cubic-bezier(0.76, 0, 0.24, 1);
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--text3) var(--bg);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  overflow-x: hidden;
  cursor: none;
  -webkit-font-smoothing: antialiased;
}

/* ---- CUSTOM CURSOR ---- */
#cursor-dot {
  position: fixed;
  top: 0; left: 0;
  z-index: 9999;
  pointer-events: none;
  width: 6px; height: 6px;
  background: #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.15s, height 0.15s, background 0.2s;
  mix-blend-mode: difference;
}

#cursor-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 9998;
  pointer-events: none;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  transform: translate(-50%, -50%);
  transition: width 0.25s var(--ease), height 0.25s var(--ease), border-color 0.25s;
}

body.cursor-hover #cursor-dot { width: 3px; height: 3px; }
body.cursor-hover #cursor-ring { width: 56px; height: 56px; border-color: var(--cyan); border-width: 1px; }

/* ---- NAV ---- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 60px;
  transition: background 0.5s, backdrop-filter 0.5s, padding 0.4s;
}

nav.scrolled {
  background: rgba(6, 6, 8, 0.9);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--line);
  padding: 20px 60px;
}

.nav-logo {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
}

.nav-logo sup {
  font-size: 0.4em;
  letter-spacing: 0.25em;
  color: var(--text3);
  font-weight: 400;
  vertical-align: super;
  margin-left: 6px;
}

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text2);
  text-decoration: none;
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--cyan);
  transition: width 0.3s var(--ease);
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--text);
  padding: 10px 22px;
  text-decoration: none;
  transition: background 0.3s, color 0.3s;
}

.nav-cta:hover {
  background: var(--cyan);
  color: var(--bg);
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: none;
  padding: 4px;
}

.nav-burger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text);
  transition: transform 0.3s;
}

/* ---- MOBILE MENU ---- */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu ul {
  list-style: none;
  text-align: center;
}

.mobile-menu ul li {
  margin: 20px 0;
}

.mm-link {
  font-family: var(--font-display);
  font-size: 3rem;
  letter-spacing: 0.05em;
  color: var(--text);
  text-decoration: none;
  transition: color 0.3s;
}

.mm-link:hover { color: var(--cyan); }

/* ---- HERO ---- */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 75% 75% at 50% 50%, black 10%, transparent 100%);
  animation: gridPulse 10s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(120px);
}

.orb-1 {
  width: 600px; height: 600px;
  right: -100px; top: -80px;
  background: radial-gradient(circle, rgba(0,210,255,0.06) 0%, transparent 70%);
}

.orb-2 {
  width: 400px; height: 400px;
  left: -80px; bottom: -60px;
  background: radial-gradient(circle, rgba(0,130,255,0.04) 0%, transparent 70%);
}

.orb-3 {
  width: 300px; height: 300px;
  right: 30%; top: 40%;
  background: radial-gradient(circle, rgba(0,210,255,0.03) 0%, transparent 70%);
  animation: orbFloat 14s ease-in-out infinite;
}

@keyframes orbFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-40px); }
}

#particleCanvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.hero-scanline {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,210,255,0.4), transparent);
  animation: scanline 6s ease-in-out infinite;
  z-index: 1;
}

@keyframes scanline {
  0% { top: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-label {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 44px;
}

.label-line {
  display: block;
  width: 36px;
  height: 1px;
  background: var(--cyan);
  opacity: 0.6;
}

/* Hero Title */
.hero-title {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(5rem, 12vw, 12rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.01em;
  margin-bottom: 60px;
}

.ht-line {
  display: block;
}

.ht-line.italic {
  font-family: var(--font-serif);
  font-size: clamp(4rem, 10vw, 10rem);
  font-style: italic;
  color: var(--text2);
  font-weight: 300;
  letter-spacing: 0.02em;
}

.hero-bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text2);
  max-width: 380px;
  font-weight: 300;
}

.hero-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text3);
  position: absolute;
  bottom: 40px;
  right: 60px;
}

.scroll-track {
  width: 1px;
  height: 56px;
  background: var(--line2);
  position: relative;
  overflow: hidden;
}

.scroll-thumb {
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--text3);
  animation: scrollDrop 2s ease-in-out infinite;
}

@keyframes scrollDrop {
  0% { top: -100%; }
  100% { top: 200%; }
}

.corner-tl {
  position: absolute;
  top: 24px;
  left: 24px;
  z-index: 3;
  opacity: 0.6;
}

.corner-br {
  position: absolute;
  bottom: 24px;
  right: 24px;
  z-index: 3;
  opacity: 0.6;
}

/* ---- ANIMATE IN ---- */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
}

.animate-in.visible {
  animation: fadeUp 0.8s var(--ease) forwards;
}

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

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }
.delay-5 { animation-delay: 0.8s; }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

/* ---- BUTTONS ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--text);
  padding: 14px 28px;
  text-decoration: none;
  transition: background 0.3s, transform 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--cyan);
  transform: translateX(-101%);
  transition: transform 0.4s var(--ease2);
}

.btn-primary span,
.btn-primary svg {
  position: relative;
  z-index: 1;
}

.btn-primary:hover::after { transform: translateX(0); }
.btn-primary:hover { color: var(--bg); }

.btn-large { padding: 18px 36px; font-size: 0.7rem; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line2);
  padding-bottom: 6px;
  transition: border-color 0.3s, color 0.3s;
}

.btn-secondary:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text2);
  text-decoration: none;
  border: 1px solid var(--line2);
  padding: 14px 28px;
  transition: color 0.3s, border-color 0.3s;
}

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

/* ---- SECTION COMMON ---- */
.section-label {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 24px;
}

.label-num {
  color: var(--cyan);
  opacity: 0.7;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: 0.01em;
}

.section-title em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text2);
  font-size: 0.9em;
}

/* ---- MARQUEE ---- */
.marquee-wrap {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  background: var(--bg2);
}

.marquee-track {
  display: flex;
  white-space: nowrap;
  animation: marqueeScroll 30s linear infinite;
}

.marquee-item {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 0 44px;
  flex-shrink: 0;
  border-right: 1px solid var(--line);
}

.marquee-item:last-child { border-right: none; }

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---- ABOUT ---- */
.section-about {
  padding: 140px 60px;
  max-width: 1400px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-left .section-title { margin-bottom: 32px; }

.about-text {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text2);
  margin-bottom: 20px;
  font-weight: 300;
}

.about-left .btn-secondary { margin-top: 16px; }

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-bottom: 2px;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--line);
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s;
}

.stat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--cyan-glow), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.stat-card:hover { border-color: var(--cyan-dim); }
.stat-card:hover::before { opacity: 1; }

.stat-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  color: var(--text);
  line-height: 1;
  position: relative;
  z-index: 1;
}

.stat-unit {
  position: absolute;
  top: 36px;
  right: 28px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.1em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text3);
  margin-top: 8px;
  position: relative;
  z-index: 1;
}

.about-diagram {
  background: var(--bg2);
  border: 1px solid var(--line);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.about-diagram svg { width: 100%; max-width: 340px; }

.svg-spin {
  animation: svgSpin 12s linear infinite;
}

.svg-spin-r {
  animation: svgSpin 20s linear infinite reverse;
}

@keyframes svgSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---- PROJECTS ---- */
.section-projects {
  padding: 100px 60px 120px;
  max-width: 1400px;
  margin: 0 auto;
}

.projects-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
  gap: 24px;
}

.projects-title-wrap .section-title { margin-top: 8px; }

.project-filters {
  display: flex;
  gap: 4px;
  align-self: flex-end;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 8px 18px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text3);
  cursor: none;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.filter-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--text);
  transform: translateY(101%);
  transition: transform 0.35s var(--ease2);
}

.filter-btn span {
  position: relative;
  z-index: 1;
  transition: color 0.3s;
}

.filter-btn:hover span, .filter-btn.active span { color: var(--bg); }
.filter-btn:hover::before, .filter-btn.active::before { transform: translateY(0); }
.filter-btn.active { border-color: var(--text); }

/* Project Grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto;
  gap: 3px;
}

.project-card {
  position: relative;
  overflow: hidden;
  background: var(--bg2);
  text-decoration: none;
  display: block;
  will-change: transform;
  cursor: none;
}

/* Grid placement */
.card-large {
  grid-column: span 2;
  grid-row: span 1;
  min-height: 500px;
}

.card-medium {
  min-height: 440px;
}

.card-wide {
  grid-column: span 3;
  min-height: 320px;
}

/* Card reveal wipe */
.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--bg2);
  transform-origin: top;
  transition: transform 1s var(--ease2);
  z-index: 20;
}

.project-card.revealed::after {
  transform: scaleY(0);
}

/* Card visual */
.card-visual {
  position: absolute;
  inset: 0;
}

.card-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.8s var(--ease);
}

.card-svg {
  width: 100%;
  height: 100%;
  opacity: 0.7;
}

.project-card:hover .card-bg {
  transform: scale(1.06);
}

/* Card BG colors */
.bg-nova    { background: linear-gradient(135deg, #060a12, #0a1420); }
.bg-kairo   { background: linear-gradient(135deg, #060c10, #081218); }
.bg-lumina  { background: linear-gradient(135deg, #100c08, #1a1208); }
.bg-vortex  { background: linear-gradient(135deg, #100606, #180808); }
.bg-zenith  { background: linear-gradient(135deg, #08080e, #0e0e16); }
.bg-pulse   { background: linear-gradient(135deg, #080612, #100820); }

.card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(6, 6, 8, 0);
  transition: background 0.5s;
  z-index: 3;
}

.project-card:hover .card-overlay {
  background: rgba(6, 6, 8, 0.35);
}

/* Card top */
.card-top {
  position: absolute;
  top: 0; left: 0; right: 0;
  padding: 28px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
}

.card-num {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  color: var(--text3);
}

.card-arrow {
  width: 38px; height: 38px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  opacity: 0;
  transform: translate(8px, -8px);
  transition: opacity 0.35s, transform 0.35s, border-color 0.35s, background 0.3s;
}

.project-card:hover .card-arrow {
  opacity: 1;
  transform: translate(0, 0);
  border-color: var(--cyan-dim);
  background: rgba(0, 210, 255, 0.08);
}

/* Card bottom */
.card-bottom {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 28px 36px 36px;
  z-index: 10;
  background: linear-gradient(to top, rgba(6,6,8,0.9) 0%, transparent 100%);
  transform: translateY(4px);
  transition: transform 0.4s var(--ease);
}

.project-card:hover .card-bottom {
  transform: translateY(0);
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(0, 210, 255, 0.6);
  margin-bottom: 8px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 10px;
}

.card-desc {
  font-size: 0.82rem;
  color: var(--text2);
  line-height: 1.6;
  font-weight: 300;
  max-width: 380px;
  margin-bottom: 18px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.4s 0.05s, transform 0.4s 0.05s;
}

.project-card:hover .card-desc {
  opacity: 1;
  transform: translateY(0);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 210, 255, 0.3);
  padding-bottom: 2px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.4s 0.1s, transform 0.4s 0.1s;
}

.project-card:hover .card-link {
  opacity: 1;
  transform: translateY(0);
}

/* Card tilt + shine */
.card-shine {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 15;
  background: radial-gradient(ellipse 200px 200px at 50% 50%, rgba(255,255,255,0.04), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:hover .card-shine { opacity: 1; }

/* Hidden filter */
.project-card.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.96);
  transition: opacity 0.4s, transform 0.4s;
}

/* SVG card animation */
@keyframes cardSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---- SERVICES ---- */
.section-services {
  background: var(--bg2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 120px 0;
}

.services-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 60px;
}

.services-header { margin-bottom: 60px; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s, transform 0.4s var(--ease);
}

.service-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}

.service-card:hover { border-color: var(--cyan-dim); }
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  color: var(--cyan);
  margin-bottom: 28px;
  opacity: 0.8;
  transition: opacity 0.3s, transform 0.4s var(--ease);
}

.service-card:hover .service-icon {
  opacity: 1;
  transform: scale(1.05);
}

.service-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
  color: var(--text);
}

.service-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text2);
  font-weight: 300;
}

.service-num {
  position: absolute;
  bottom: 28px; right: 32px;
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--line);
  line-height: 1;
  letter-spacing: 0.02em;
  transition: color 0.4s;
}

.service-card:hover .service-num { color: var(--cyan-glow); }

/* CTA card in services */
.service-cta-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg3), var(--bg));
  border-color: var(--cyan-dim);
  min-height: 200px;
}

.service-cta-text {
  font-family: var(--font-sans);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 24px;
  max-width: 220px;
  line-height: 1.4;
}

.service-cta-deco {
  position: absolute;
  right: -20px; bottom: -20px;
  width: 160px; height: 160px;
  opacity: 0.4;
}

/* ---- CTA ---- */
.section-cta {
  padding: 160px 60px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 0%, transparent 100%);
  opacity: 0.5;
}

.cta-orb {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,210,255,0.05) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  filter: blur(60px);
  animation: orbFloat 12s ease-in-out infinite;
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 8rem);
  font-weight: 400;
  line-height: 0.95;
  margin: 20px 0 32px;
}

.cta-title em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--cyan);
  font-size: 0.88em;
}

.cta-sub {
  font-size: 1rem;
  color: var(--text2);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 48px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* ---- FOOTER ---- */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--line);
  padding: 64px 60px 32px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 60px;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-logo {
  display: block;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 8px;
}

.footer-logo sup {
  font-size: 0.4em;
  letter-spacing: 0.25em;
  color: var(--text3);
  font-weight: 400;
  vertical-align: super;
  margin-left: 6px;
}

.footer-tagline {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text3);
}

.footer-links {
  display: flex;
  gap: 80px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 8px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text2);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-col a:hover { color: var(--cyan); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  gap: 20px;
  flex-wrap: wrap;
}

.footer-copy,
.footer-made {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
}

/* ---- SVG diagram spin ---- */
@keyframes svgSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1100px) {
  .about-grid { grid-template-columns: 1fr; gap: 60px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .card-large { grid-column: span 2; }
  .card-wide { grid-column: span 2; }
}

@media (max-width: 900px) {
  nav { padding: 24px 32px; }
  nav.scrolled { padding: 16px 32px; }
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  #hero { padding: 0 32px; }
  .hero-scroll { right: 32px; }
  .section-about { padding: 100px 32px; }
  .section-projects { padding: 80px 32px; }
  .services-inner { padding: 0 32px; }
  .section-cta { padding: 120px 32px; }
  footer { padding: 60px 32px 28px; }
  .footer-links { gap: 40px; }
  .projects-grid { grid-template-columns: 1fr; }
  .card-large, .card-wide { grid-column: span 1; min-height: 400px; }
}

@media (max-width: 640px) {
  .hero-title { font-size: clamp(3.5rem, 14vw, 6rem); }
  .section-title { font-size: clamp(2rem, 8vw, 3rem); }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cta-title { font-size: clamp(2.5rem, 10vw, 4rem); }
  .footer-top { flex-direction: column; }
  .footer-links { gap: 32px; }
  .projects-header { flex-direction: column; align-items: flex-start; }
  .project-filters { flex-wrap: wrap; }
  .nav-burger { display: flex; }
}

/* ---- REDUCED MOTION ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}