/* ===================================================================
   LANDING PAGE — PromithicAI v1.1
   =================================================================== */

/* ── Background orbs ── */
.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-below);
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.15) 0%, transparent 70%);
  top: -200px;
  left: -150px;
  animation: orbFloat1 18s ease-in-out infinite;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,0.15) 0%, transparent 70%);
  top: 10%;
  right: -100px;
  animation: orbFloat2 22s ease-in-out infinite;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, transparent 70%);
  bottom: 20%;
  left: 30%;
  animation: orbFloat3 16s ease-in-out infinite;
}

/* ── Hero ── */
.hero {
  padding: 100px 0 80px;
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  background: var(--glow-cyan);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  width: fit-content;
}
.hero-tag .dot { animation: statusPing 2s ease-in-out infinite; }

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--accent-cyan);
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.hero-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-desc strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Typewriter cursor */
.typewriter-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--accent-cyan);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: cursorBlink 1s step-end infinite;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.hero-stat-num {
  font-size: var(--text-2xl);
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* Hero right — demo card */
.hero-demo {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl), var(--shadow-glow-cyan);
  animation: float 6s ease-in-out infinite;
}

.hero-demo-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.hero-demo-dots { display: flex; gap: 6px; }
.hero-demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.hero-demo-dot:nth-child(1) { background: #ff5f57; }
.hero-demo-dot:nth-child(2) { background: #febc2e; }
.hero-demo-dot:nth-child(3) { background: #28c840; }

.hero-demo-title {
  flex: 1;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-align: center;
}

.hero-demo-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.demo-prompt-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  box-shadow: 0 0 12px var(--glow-cyan);
}

.demo-prompt-icon { color: var(--accent-cyan); flex-shrink: 0; }
.demo-prompt-icon svg { width: 16px; height: 16px; }

.demo-prompt-text {
  flex: 1;
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.demo-prompt-send {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--gradient-btn);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-glow-cyan);
}
.demo-prompt-send svg { width: 14px; height: 14px; }

/* Mini pipeline in demo */
.demo-pipeline {
  display: flex;
  gap: 6px;
  align-items: center;
}

.demo-step {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  flex: 1;
  justify-content: center;
}

.demo-step.active {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: var(--glow-cyan);
}
.demo-step.done {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: var(--glow-green);
}
.demo-step svg { width: 12px; height: 12px; }

.demo-arrow { color: var(--text-muted); flex-shrink: 0; font-size: 10px; }

/* Demo preview mini */
.demo-preview-mini {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 160px;
}

.demo-preview-mini iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* ── What You'll Master Section ── */
.master-section {
  padding: 100px 0;
  position: relative;
}

.master-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.master-left { }

.master-right {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-lg), var(--shadow-glow-violet);
  border-top: 3px solid var(--accent-violet);
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.master-section-tag {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.master-list { display: flex; flex-direction: column; gap: 16px; }

.master-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base),
              transform var(--transition-base);
}

.master-item:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateX(4px);
}

.master-item-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 6px;
  box-shadow: 0 0 8px var(--accent-cyan);
}

.master-item-text {
  font-size: var(--text-sm);
  color: var(--text-primary);
  font-weight: 500;
  line-height: var(--leading-relaxed);
}

.master-item-text small {
  display: block;
  color: var(--text-secondary);
  font-weight: 400;
  margin-top: 3px;
}

/* ── Features Grid ── */
.features-section { padding: 100px 0; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 64px;
}

/* ── Pipeline Viz Section ── */
.pipeline-section { padding: 80px 0; }

.pipeline-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-top: 56px;
  position: relative;
}

.pipeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  flex: 1;
  max-width: 200px;
}

.pipeline-node-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid;
  position: relative;
  transition: all var(--transition-base);
}

.pipeline-node-circle.cyan {
  border-color: var(--accent-cyan);
  background: var(--glow-cyan);
  color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

.pipeline-node-circle.violet {
  border-color: var(--accent-violet);
  background: var(--glow-violet);
  color: var(--accent-violet);
  box-shadow: var(--shadow-glow-violet);
}

.pipeline-node-circle.green {
  border-color: var(--accent-green);
  background: var(--glow-green);
  color: var(--accent-green);
  box-shadow: var(--shadow-glow-green);
}

.pipeline-node-circle svg { width: 28px; height: 28px; }

.pipeline-node-label {
  font-size: var(--text-lg);
  font-weight: 700;
}
.pipeline-node-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-align: center;
}

.pipeline-arrow {
  display: flex;
  align-items: center;
  padding: 0 16px;
  color: var(--text-muted);
  margin-bottom: 48px;
  flex-shrink: 0;
}

.pipeline-arrow-line {
  height: 2px;
  width: 60px;
  background: linear-gradient(90deg, var(--border), var(--border-glow), var(--border));
  background-size: 200% 100%;
  animation: gradientShift 3s linear infinite;
}

/* ── How It Works ── */
.how-section { padding: 100px 0; }

.how-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 64px;
  position: relative;
}

.how-step {
  text-align: center;
  position: relative;
}

.how-step-num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 800;
  color: #fff;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-glow-cyan);
  position: relative;
  z-index: 1;
}

.how-step-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: 10px;
}

.how-step-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Connecting line between steps */
.how-steps::before {
  content: '';
  position: absolute;
  top: 26px;
  left: calc(12.5% + 26px);
  right: calc(12.5% + 26px);
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  z-index: 0;
  opacity: 0.3;
}

/* ── Providers Strip ── */
.providers-section {
  padding: 60px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.providers-label {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 28px;
}

.providers-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.provider-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.provider-logo:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow-cyan);
}

/* ── CTA Section ── */
.cta-section {
  padding: 120px 0;
  text-align: center;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(0,212,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.04em;
}

.cta-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: 48px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.cta-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Upcoming section ── */
.upcoming-section { padding: 80px 0; }

.upgrade-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.upgrade-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.upgrade-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.upgrade-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.upgrade-card:hover::before { opacity: 1; }

.upgrade-ver {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 10px;
  letter-spacing: 0.08em;
}

.upgrade-title {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: 8px;
}

.upgrade-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-demo { max-width: 500px; margin: 0 auto; }
  .master-grid { grid-template-columns: 1fr; }
  .master-right { position: static; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .how-steps { grid-template-columns: repeat(2, 1fr); }
  .how-steps::before { display: none; }
  .upgrade-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero { padding: 60px 0 60px; min-height: auto; }
  .hero-stats { gap: 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .how-steps { grid-template-columns: 1fr; }
  .pipeline-diagram { flex-direction: column; gap: 16px; }
  .pipeline-arrow { transform: rotate(90deg); }
  .upgrade-cards { grid-template-columns: 1fr; }
}