/* ============================================================
   ONELINKS - Global Styles
   Dark Tech Theme | Orange + Blue Accent
   ============================================================ */

:root {
  --bg-primary: #080c14;
  --bg-secondary: #0d1421;
  --bg-card: #111827;
  --bg-card-hover: #1a2436;
  --accent-orange: #f97316;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  --border: rgba(59, 130, 246, 0.15);
  --border-hover: rgba(249, 115, 22, 0.4);
  --glow-orange: rgba(249, 115, 22, 0.3);
  --glow-blue: rgba(59, 130, 246, 0.3);
  --nav-height: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-blue); border-radius: 3px; }

/* ============================================================
   NAV
   ============================================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
}

.nav-logo img { height: 36px; }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--accent-orange);
  transform: scaleX(0);
  transition: transform 0.2s;
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switch {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px;
}

.lang-btn {
  padding: 4px 10px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
}

.lang-btn.active {
  background: var(--accent-blue);
  color: #fff;
}

.btn-nav {
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--accent-orange), #ea580c);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}

.btn-nav:hover { opacity: 0.9; transform: translateY(-1px); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  width: 24px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59,130,246,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(249,115,22,0.08) 0%, transparent 60%);
}

/* Animated grid */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

/* Floating orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  animation: float 8s ease-in-out infinite;
}

.orb-1 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(249,115,22,0.15), transparent);
  top: 10%; left: -10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,130,246,0.12), transparent);
  top: -10%; right: -10%;
  animation-delay: 3s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(6,182,212,0.1), transparent);
  bottom: 10%; right: 20%;
  animation-delay: 6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 0 2rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(249,115,22,0.4);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent-orange);
  margin-bottom: 2rem;
  background: rgba(249,115,22,0.05);
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent-orange);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent-orange) 0%, #fbbf24 50%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--accent-orange), #ea580c);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s;
  box-shadow: 0 0 30px var(--glow-orange);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 50px var(--glow-orange);
}

.btn-secondary {
  padding: 14px 32px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s;
}

.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: 0 0 20px var(--glow-blue);
}

/* Flywheel / stats */
.hero-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
  margin-top: 4rem;
  flex-wrap: wrap;
}

.stat-item { text-align: center; }

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============================================================
   SECTION BASE
   ============================================================ */
section {
  padding: 100px 5%;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================
   ECOSYSTEM (FLYWHEEL)
   ============================================================ */
.ecosystem {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.ecosystem::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(59,130,246,0.05) 0%, transparent 70%);
}

.eco-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.eco-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  cursor: default;
}

.eco-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  opacity: 0;
  transition: opacity 0.3s;
}

.eco-card.orange::before { background: radial-gradient(ellipse at top, rgba(249,115,22,0.08), transparent 70%); }
.eco-card.blue::before { background: radial-gradient(ellipse at top, rgba(59,130,246,0.08), transparent 70%); }
.eco-card.cyan::before { background: radial-gradient(ellipse at top, rgba(6,182,212,0.08), transparent 70%); }

.eco-card:hover::before { opacity: 1; }
.eco-card:hover { border-color: var(--border-hover); transform: translateY(-4px); }

.eco-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1.5rem;
}

.eco-card.orange .eco-icon { background: rgba(249,115,22,0.1); }
.eco-card.blue .eco-icon { background: rgba(59,130,246,0.1); }
.eco-card.cyan .eco-icon { background: rgba(6,182,212,0.1); }

.eco-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.eco-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.eco-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-muted);
  padding-top: 2rem;
  grid-column: 1 / -1;
}

/* ============================================================
   FEATURES - AI DC
   ============================================================ */
.aidc {
  background: var(--bg-primary);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.3s;
}

.feature-item:hover {
  border-color: rgba(59,130,246,0.3);
  background: var(--bg-card-hover);
}

.feature-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 48px; height: 48px;
  background: rgba(59,130,246,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.feature-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.feature-visual {
  position: relative;
}

.gpu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.gpu-card::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg at 50% 50%, transparent 0deg, rgba(59,130,246,0.05) 60deg, transparent 120deg);
  animation: rotate 8s linear infinite;
}

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

.gpu-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  position: relative;
  z-index: 1;
}

.gpu-stat {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem;
  text-align: center;
}

.gpu-stat .val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-blue);
}

.gpu-stat .unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.gpu-label {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 1.5rem;
  position: relative;
  z-index: 1;
}

/* ============================================================
   AI DEV TEAMS
   ============================================================ */
.aidev {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.agents-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 1100px;
  margin: 0 auto 3rem;
}

.agent-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s;
  position: relative;
}

.agent-card:hover {
  border-color: rgba(249,115,22,0.3);
  transform: translateY(-4px);
}

.agent-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(249,115,22,0.2), rgba(59,130,246,0.2));
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1rem;
}

.agent-status {
  display: inline-block;
  width: 8px; height: 8px;
  background: #22c55e;
  border-radius: 50%;
  margin-bottom: 0.5rem;
  box-shadow: 0 0 8px rgba(34,197,94,0.5);
  animation: pulse 2s infinite;
}

.agent-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.agent-card p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.dev-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem 1rem;
}

.flow-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.flow-step h5 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.flow-step p {
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 100px;
}

.flow-arrow {
  font-size: 1.2rem;
  color: var(--text-muted);
  padding: 0 0.5rem;
  padding-top: 0;
  margin-top: -1rem;
}

/* ============================================================
   AI TOKENS
   ============================================================ */
.aitokens {
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.token-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.token-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.token-info p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.token-uses {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.token-use {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.token-use::before {
  content: '✦';
  color: var(--accent-orange);
  font-size: 0.7rem;
}

.tokenomics {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
}

.tokenomics h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pie-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

/* Simple CSS pie chart */
.pie {
  width: 160px; height: 160px;
  border-radius: 50%;
  background: conic-gradient(
    var(--accent-orange) 0% 40%,
    var(--accent-blue) 40% 65%,
    #8b5cf6 65% 80%,
    #22c55e 80% 90%,
    var(--text-muted) 90% 100%
  );
  position: relative;
}

.pie::after {
  content: '';
  position: absolute;
  inset: 30px;
  background: var(--bg-card);
  border-radius: 50%;
}

.legend {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
}

.legend-dot {
  width: 10px; height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.legend-item span { color: var(--text-secondary); }
.legend-item strong { margin-left: auto; color: var(--text-primary); }

/* ============================================================
   CONTACT / LEAD FORM
   ============================================================ */
.contact {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(249,115,22,0.04), transparent);
}

.contact-wrap {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-blue);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-group select option { background: var(--bg-card); }

.btn-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--accent-orange), #ea580c);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 0 30px var(--glow-orange);
}

.btn-submit:hover { opacity: 0.9; transform: translateY(-1px); }

.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
}

.form-success .check { font-size: 3rem; margin-bottom: 1rem; }
.form-success h3 { margin-bottom: 0.5rem; }
.form-success p { color: var(--text-secondary); }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 3rem 5% 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto 2rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  max-width: 280px;
  line-height: 1.6;
}

.footer-col h5 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col ul { list-style: none; }

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul li a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col ul li a:hover { color: var(--text-primary); }

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .agents-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  nav { padding: 0 4%; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(8,12,20,0.97);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 4%;
    gap: 1rem;
  }
  .hamburger { display: flex; }
  .btn-nav { display: none; }

  .eco-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .agents-grid { grid-template-columns: repeat(2, 1fr); }
  .token-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .hero-stats { gap: 2rem; }
  .dev-flow { gap: 0; }
}

@media (max-width: 480px) {
  section { padding: 60px 4%; }
  .agents-grid { grid-template-columns: 1fr 1fr; }
  .flow-arrow { display: none; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up:nth-child(1) { transition-delay: 0s; }
.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; }