:root {
  --bg-primary: #050a14;
  --bg-secondary: #0a1628;
  --bg-card: rgba(255,255,255,0.04);
  --border: rgba(255,255,255,0.08);
  --text-primary: #f0f6ff;
  --text-secondary: #7a9cc0;
  --accent-cyan: #00d4ff;
  --accent-blue: #4f8ef7;
  --accent-green: #00ff88;
  --accent-orange: #ff7a00;
  --accent-purple: #a855f7;
  --jenkins: #d33833;
  --docker: #2496ed;
  --k8s: #326ce5;
  --github: #e6edf3;
  --shadow-glow: 0 0 40px rgba(0,212,255,0.15);
}

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

html { scroll-behavior: smooth; }

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

/* Particles */
.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.particle {
  position: absolute;
  border-radius: 50%;
  animation: float-particle linear infinite;
  opacity: 0;
}
@keyframes float-particle {
  0%   { transform: translateY(100vh) scale(0); opacity: 0; }
  10%  { opacity: 0.4; }
  90%  { opacity: 0.2; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* Nav */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 3rem;
  background: rgba(5,10,20,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex; align-items: center; gap: .5rem;
  font-weight: 700; font-size: 1.1rem;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.logo-icon { font-size: 1.4rem; filter: drop-shadow(0 0 8px var(--accent-cyan)); }
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: .9rem; font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--accent-cyan); }

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8rem 3rem 4rem;
  position: relative;
  z-index: 1;
  gap: 3rem;
}
.hero::before {
  content: '';
  position: absolute;
  top: 20%; left: 50%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,.06), transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.hero-content { max-width: 600px; }

.badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(0,255,136,.1);
  border: 1px solid rgba(0,255,136,.25);
  border-radius: 100px;
  padding: .35rem .9rem;
  font-size: .8rem; font-weight: 600;
  color: var(--accent-green);
  margin-bottom: 1.5rem;
  letter-spacing: .05em;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse-green 2s ease-in-out infinite;
}
@keyframes pulse-green {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 480px;
}
.hero-tags { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2.5rem; }
.tag {
  padding: .35rem .9rem;
  border-radius: 100px;
  font-size: .8rem; font-weight: 600;
  border: 1px solid transparent;
  font-family: 'JetBrains Mono', monospace;
}
.tag-jenkins { background: rgba(211,56,51,.15); border-color: rgba(211,56,51,.3); color: #ff6b6b; }
.tag-docker  { background: rgba(36,150,237,.15); border-color: rgba(36,150,237,.3); color: #4fc3f7; }
.tag-k8s     { background: rgba(50,108,229,.15); border-color: rgba(50,108,229,.3); color: #82a9ff; }
.tag-github  { background: rgba(230,237,243,.1);  border-color: rgba(230,237,243,.2); color: #e6edf3; }

.btn-primary {
  display: inline-flex; align-items: center; gap: .6rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #fff; border: none; border-radius: 12px;
  padding: .85rem 2rem; font-size: 1rem; font-weight: 600;
  cursor: pointer; transition: all .3s;
  box-shadow: 0 4px 24px rgba(0,212,255,.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,212,255,.45);
}
.btn-secondary {
  display: inline-flex; align-items: center; gap: .6rem;
  background: transparent;
  color: var(--text-secondary); border: 1px solid var(--border);
  border-radius: 12px; padding: .85rem 1.5rem;
  font-size: 1rem; font-weight: 600; cursor: pointer; transition: all .3s;
}
.btn-secondary:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

/* Hero Visual - Mini Pipeline */
.hero-visual { flex-shrink: 0; }
.pipeline-mini {
  display: flex; align-items: center; gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-glow);
}
.mini-node {
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  padding: 1rem;
  border-radius: 12px;
  transition: all .4s;
  position: relative;
}
.mini-node.active {
  background: rgba(0,212,255,.1);
  border: 1px solid rgba(0,212,255,.3);
  box-shadow: 0 0 20px rgba(0,212,255,.2);
}
.mini-node.done {
  background: rgba(0,255,136,.1);
  border: 1px solid rgba(0,255,136,.3);
}
.mini-icon { font-size: 1.8rem; }
.mini-node span { font-size: .7rem; color: var(--text-secondary); font-weight: 500; white-space: nowrap; }
.mini-arrow {
  width: 32px; height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  position: relative; overflow: hidden;
}
.mini-arrow::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, #fff, transparent);
  animation: arrow-flow 2s linear infinite;
}
@keyframes arrow-flow {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Sections */
.section {
  padding: 6rem 3rem;
  position: relative;
  z-index: 1;
}
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: .75rem;
}
.section-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Architecture Diagram */
.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto;
}
.arch-node {
  display: flex; flex-direction: column; align-items: center; gap: .75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem 1.5rem;
  min-width: 150px; text-align: center;
  transition: all .3s;
  position: relative; overflow: hidden;
}
.arch-node::before {
  content: ''; position: absolute;
  inset: 0; opacity: 0;
  background: radial-gradient(circle at center, rgba(0,212,255,.1), transparent);
  transition: opacity .3s;
}
.arch-node:hover::before { opacity: 1; }
.arch-node:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,212,255,.2);
}
.arch-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center;
  padding: 10px;
  color: #fff;
}
.jenkins-icon { background: rgba(211,56,51,.2); color: #ff6b6b; }
.docker-icon  { background: rgba(36,150,237,.2); color: #4fc3f7; }
.k8s-icon     { background: rgba(50,108,229,.2); color: #82a9ff; }
.arch-node h3 { font-size: 1rem; font-weight: 700; }
.arch-node p  { font-size: .78rem; color: var(--text-secondary); }

.arch-arrow {
  display: flex; flex-direction: column; align-items: center; gap: .4rem;
  padding: 0 .5rem;
}
.arrow-line {
  width: 60px; height: 2px;
  background: var(--border);
  position: relative; overflow: hidden;
}
.arrow-pulse {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  animation: arrow-flow 2.5s linear infinite;
}
.arrow-label { font-size: .65rem; color: var(--text-secondary); font-family: 'JetBrains Mono', monospace; }

/* Stack Grid */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}
.stack-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  transition: all .3s;
  position: relative; overflow: hidden;
}
.stack-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,0,0,.4);
}
.card-glow {
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  transition: opacity .3s;
}
.card-github .card-glow { background: linear-gradient(90deg, #e6edf3, #888); }
.card-jenkins .card-glow { background: linear-gradient(90deg, var(--jenkins), #ff8a65); }
.card-docker  .card-glow { background: linear-gradient(90deg, var(--docker), #00e5ff); }
.card-k8s     .card-glow { background: linear-gradient(90deg, var(--k8s), #82a9ff); }

.card-github:hover { border-color: rgba(230,237,243,.2); }
.card-jenkins:hover{ border-color: rgba(211,56,51,.3); }
.card-docker:hover { border-color: rgba(36,150,237,.3); }
.card-k8s:hover    { border-color: rgba(50,108,229,.3); }

.card-header {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: 1rem;
}
.card-icon {
  font-size: 2rem; width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px; background: rgba(255,255,255,.06);
}
.card-icon svg { width: 28px; height: 28px; fill: currentColor; }
.card-github .card-icon { color: #e6edf3; }
.card-header h3 { font-size: 1.2rem; font-weight: 700; }
.stack-card p { color: var(--text-secondary); font-size: .9rem; margin-bottom: 1.25rem; }
.card-features { list-style: none; display: flex; flex-direction: column; gap: .4rem; }
.card-features li { font-size: .85rem; color: var(--text-primary); opacity: .8; }

/* Stages */
.stages-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.stage {
  display: flex; gap: 2rem; align-items: flex-start;
  transition: all .3s;
}
.stage:hover .stage-content {
  border-color: var(--accent-cyan);
  box-shadow: 0 8px 32px rgba(0,212,255,.1);
}
.stage-number {
  font-size: 3rem; font-weight: 900;
  font-family: 'JetBrains Mono', monospace;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  min-width: 60px; text-align: center;
  line-height: 1;
  padding-top: 1.5rem;
}
.stage-content {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  transition: all .3s;
}
.stage-icon { font-size: 1.5rem; margin-bottom: .5rem; }
.stage-content h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .5rem; }
.stage-content p { color: var(--text-secondary); font-size: .9rem; margin-bottom: 1rem; }
.stage-code {
  background: rgba(0,0,0,.4);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .75rem 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: .8rem;
  color: var(--accent-green);
  line-height: 1.8;
}
.code-comment { color: #4a6070; }
.stage-connector {
  padding-left: 90px;
  height: 32px; display: flex; align-items: center;
}
.connector-line {
  width: 2px; height: 100%;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-blue));
  margin-left: 28px;
  position: relative;
}

/* Metrics */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}
.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all .3s;
  position: relative; overflow: hidden;
}
.metric-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
}
.metric-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,212,255,.3);
  box-shadow: 0 16px 48px rgba(0,212,255,.15);
}
.metric-value {
  font-size: 4rem; font-weight: 900;
  font-family: 'JetBrains Mono', monospace;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1;
}
.metric-symbol {
  font-size: 1.5rem; font-weight: 700;
  color: var(--accent-cyan); margin-bottom: .5rem;
}
.metric-label { font-size: 1rem; font-weight: 700; margin-bottom: .4rem; }
.metric-desc { font-size: .8rem; color: var(--text-secondary); }

/* Demo */
.demo-section {
  background: linear-gradient(180deg, transparent, rgba(10,22,40,.6), transparent);
}
.demo-container {
  max-width: 800px;
  margin: 0 auto;
}
.demo-controls {
  display: flex; gap: 1rem; margin-bottom: 2rem; justify-content: center;
}
.demo-pipeline {
  background: rgba(0,0,0,.4);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1rem;
  margin-bottom: 1.5rem;
}
.demo-stage { }
.demo-stage-header {
  display: flex; align-items: center; gap: .75rem; margin-bottom: .5rem;
}
.demo-stage-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
  transition: all .4s;
}
.demo-stage.running  .demo-stage-dot { background: var(--accent-cyan); box-shadow: 0 0 10px var(--accent-cyan); animation: pulse-dot 1s ease-in-out infinite; }
.demo-stage.success  .demo-stage-dot { background: var(--accent-green); box-shadow: 0 0 10px var(--accent-green); }
.demo-stage.failed   .demo-stage-dot { background: #ff4444; box-shadow: 0 0 10px #ff4444; }
@keyframes pulse-dot {
  0%,100% { transform: scale(1); }
  50%     { transform: scale(1.5); }
}
.demo-stage-name { font-weight: 600; font-size: .9rem; flex: 1; }
.demo-stage-status {
  font-size: .75rem; font-family: 'JetBrains Mono', monospace;
  color: var(--text-secondary); transition: all .3s;
}
.demo-stage.running .demo-stage-status { color: var(--accent-cyan); }
.demo-stage.success .demo-stage-status { color: var(--accent-green); }
.demo-stage-bar {
  height: 4px; background: rgba(255,255,255,.06);
  border-radius: 2px; overflow: hidden;
}
.demo-stage-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  border-radius: 2px;
  transition: width linear;
}
.demo-stage.success .demo-stage-fill {
  background: linear-gradient(90deg, var(--accent-green), #00cc6a);
}
.demo-log {
  background: rgba(0,0,0,.5);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: .8rem;
  color: var(--accent-green);
  min-height: 80px;
  line-height: 1.8;
  margin-bottom: 1rem;
  white-space: pre-line;
}
.log-prompt { color: var(--accent-cyan); font-weight: 700; }
.demo-result {
  text-align: center;
  font-size: 1.1rem; font-weight: 700;
  padding: 1rem;
  border-radius: 12px;
  transition: all .4s;
}
.demo-result.success { background: rgba(0,255,136,.1); color: var(--accent-green); border: 1px solid rgba(0,255,136,.3); }
.demo-result.failed  { background: rgba(255,68,68,.1); color: #ff4444; border: 1px solid rgba(255,68,68,.3); }

/* Footer */
.footer {
  text-align: center;
  padding: 3rem;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: .9rem;
  position: relative; z-index: 1;
}
.footer-sub { margin-top: .5rem; font-size: .8rem; opacity: .6; }

/* Responsive */
@media (max-width: 768px) {
  .hero { flex-direction: column; padding: 7rem 1.5rem 3rem; }
  .hero-visual { width: 100%; }
  .pipeline-mini { flex-wrap: wrap; justify-content: center; gap: .5rem; padding: 1rem; }
  .mini-arrow { display: none; }
  .section { padding: 4rem 1.5rem; }
  .nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .arch-diagram { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); }
}