/* ============================================================
   ProxyRobots — styles.css
   Dark, futuristic, Physical AI landing page
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg:           #0A0F1C;
  --bg-card:      #0E1424;
  --bg-elevated:  #111827;
  --blue:         #2D7FF9;
  --blue-dim:     rgba(45,127,249,0.12);
  --blue-glow:    rgba(45,127,249,0.35);
  --orange:       #F5A623;
  --orange-dim:   rgba(245,166,35,0.12);
  --white:        #FFFFFF;
  --gray-1:       #F0F4FF;
  --gray-2:       #A8B3CF;
  --gray-3:       #4A5568;
  --border:       rgba(255,255,255,0.06);
  --radius:       12px;
  --radius-lg:    20px;
  --font:         'Inter', system-ui, sans-serif;
  --transition:   0.3s cubic-bezier(0.4,0,0.2,1);
  --max-w:        1160px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font); }

/* ── Utility ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 16px;
}

/* ── Scroll animations ────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }

/* ── Navbar ───────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

#navbar.scrolled {
  background: rgba(10,15,28,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-color: var(--border);
}

.nav-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  flex-shrink: 0;
  height: 44px;
  display: flex;
  align-items: center;
}
.nav-logo img { height: 44px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-2);
  padding: 6px 14px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover {
  color: var(--white);
  background: rgba(255,255,255,0.06);
}

.nav-social {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
}

.nav-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  color: var(--gray-2);
  transition: color var(--transition), background var(--transition);
}
.nav-social a:hover {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}
.nav-social svg { width: 18px; height: 18px; fill: currentColor; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  margin-left: auto;
}
.nav-hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav overlay */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 68px 0 0 0;
  background: rgba(10,15,28,0.97);
  backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-size: 24px;
  font-weight: 600;
  color: var(--gray-2);
  transition: color var(--transition);
}
.nav-mobile a:hover { color: var(--white); }
.nav-mobile .mobile-social {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}
.nav-mobile .mobile-social a {
  font-size: 14px;
  color: var(--gray-2);
}

/* ── Hero ─────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

/* Particle canvas */
#particle-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* Radial glow behind headline */
.hero-glow {
  position: absolute;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(45,127,249,0.12) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(45,127,249,0.1);
  border: 1px solid rgba(45,127,249,0.25);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--gray-1);
  margin-bottom: 32px;
}
.hero-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}
.hero-badge a { color: var(--blue); font-weight: 500; }
.hero-badge a:hover { text-decoration: underline; }

.hero-headline {
  font-size: clamp(40px, 6.5vw, 76px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 24px;
}
.hero-headline span { color: var(--blue); }

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 400;
  color: var(--gray-2);
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.65;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--blue);
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 8px;
  border: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 0 0 var(--blue-glow);
}
.hero-cta:hover {
  background: #4a90f5;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--blue-glow);
}

.hero-scroll {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--gray-3);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero-scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--gray-3), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ── About / Problem+Solution ─────────────────────────────── */
#about {
  padding: 120px 24px;
  position: relative;
}

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

.about-left .section-label { display: block; }

.about-headline {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
}
.about-headline em {
  font-style: normal;
  color: var(--orange);
}

.about-sub {
  font-size: 15px;
  color: var(--gray-2);
  margin-bottom: 32px;
  line-height: 1.7;
}

.about-stat-row {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-number {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--blue);
}
.stat-label {
  font-size: 12px;
  color: var(--gray-2);
  font-weight: 500;
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 8px;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition);
}
.about-card:hover {
  border-color: rgba(45,127,249,0.25);
  transform: translateX(4px);
}

.about-card-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 20px;
}
.about-card-icon.blue { background: var(--blue-dim); }
.about-card-icon.orange { background: var(--orange-dim); }
.about-card-icon.green { background: rgba(52,211,153,0.1); }

.about-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}
.about-card p {
  font-size: 14px;
  color: var(--gray-2);
  line-height: 1.65;
}

/* ── Robot Simulation ─────────────────────────────────────── */
#simulation {
  padding: 120px 24px;
  background: linear-gradient(180deg, transparent 0%, rgba(45,127,249,0.03) 50%, transparent 100%);
}

.simulation-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-headline {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--gray-2);
  max-width: 480px;
  margin: 0 auto;
}

.robot-scene-wrapper {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #060B16;
  box-shadow: 0 0 80px rgba(45,127,249,0.08), 0 2px 0 rgba(255,255,255,0.04) inset;
}

#robot-canvas {
  width: 100%;
  height: 460px;
  display: block;
}

.scene-overlay {
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: rgba(10,15,28,0.8);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-2);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.scene-overlay .dot-accent {
  color: var(--blue);
  margin-right: 6px;
}

/* ── Robot canvas scene ───────────────────────────────────── */

/* ── Team ─────────────────────────────────────────────────── */
#team {
  padding: 120px 24px;
}

.team-header {
  text-align: center;
  margin-bottom: 64px;
}

.team-grid {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  max-width: 700px;
  margin: 0 auto 40px;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  flex: 1;
  min-width: 260px;
  max-width: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.team-card:hover {
  border-color: rgba(45,127,249,0.3);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(45,127,249,0.08);
}

.team-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-dim), var(--orange-dim));
  border: 2px solid rgba(45,127,249,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.team-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.team-role {
  font-size: 13px;
  color: var(--orange);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.team-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(45,127,249,0.1);
  border: 1px solid rgba(45,127,249,0.2);
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 8px;
  transition: background var(--transition), border-color var(--transition);
}
.team-linkedin:hover {
  background: rgba(45,127,249,0.2);
  border-color: rgba(45,127,249,0.4);
}
.team-linkedin svg { width: 15px; height: 15px; fill: currentColor; }

.team-accelerator {
  text-align: center;
  font-size: 14px;
  color: var(--gray-2);
}
.team-accelerator a { color: var(--blue); font-weight: 500; }
.team-accelerator a:hover { text-decoration: underline; }

/* ── Contact ──────────────────────────────────────────────── */
#contact {
  padding: 120px 24px;
  background: linear-gradient(180deg, transparent, rgba(45,127,249,0.03) 50%, transparent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  max-width: 960px;
  margin: 0 auto;
}

.contact-left h2 {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.contact-left p {
  color: var(--gray-2);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gray-2);
  font-size: 14px;
}
.contact-info-item svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--blue); fill: none; stroke: currentColor; stroke-width: 1.5; }
.contact-info-item a { color: var(--gray-1); }
.contact-info-item a:hover { color: var(--blue); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-2);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--white);
  font-family: var(--font);
  font-size: 14px;
  padding: 13px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-3); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(45,127,249,0.5);
  box-shadow: 0 0 0 3px rgba(45,127,249,0.1);
}

.form-group textarea { min-height: 130px; }

.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--blue);
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 8px;
  border: none;
  margin-top: 4px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.form-submit:hover {
  background: #4a90f5;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--blue-glow);
}
.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}
.form-status {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
}
.form-status--success {
  background: rgba(52, 199, 89, 0.12);
  color: #34c759;
  border: 1px solid rgba(52, 199, 89, 0.3);
}
.form-status--error {
  background: rgba(255, 69, 58, 0.12);
  color: #ff453a;
  border: 1px solid rgba(255, 69, 58, 0.3);
}

/* ── Footer ───────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo img { height: 38px; width: auto; opacity: 0.85; }

.footer-copy {
  font-size: 13px;
  color: var(--gray-3);
}

.footer-social {
  display: flex;
  gap: 8px;
}
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  color: var(--gray-3);
  transition: color var(--transition), background var(--transition);
}
.footer-social a:hover {
  color: var(--white);
  background: rgba(255,255,255,0.06);
}
.footer-social svg { width: 18px; height: 18px; fill: currentColor; }

/* ── Divider / section separator ─────────────────────────── */
.section-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ── Horizontal rule accent ───────────────────────────────── */
.line-accent {
  display: block;
  width: 40px; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--orange));
  border-radius: 2px;
  margin-bottom: 20px;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-social { display: none; }
  .nav-hamburger { display: flex; }

  .hero-headline { font-size: clamp(32px, 8vw, 52px); }

  #robot-canvas, .robot-fallback { height: 340px; }

  .team-grid { flex-direction: column; align-items: center; }
  .team-card { max-width: 100%; width: 100%; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .about-stat-row { gap: 24px; }
  .about-card { padding: 20px; }
  #robot-canvas, .robot-fallback { height: 280px; }
}