@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --bg: #000000;
  --bg-elevated: #1c1c1e;
  --bg-card: rgba(28, 28, 30, 0.8);
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --text-tertiary: #6e6e73;
  --accent: #2997ff;
  --accent-glow: rgba(41, 151, 255, 0.15);
  --green: #30d158;
  --orange: #ff9f0a;
  --purple: #bf5af2;
  --pink: #ff375f;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 20px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

::selection {
  background: var(--accent);
  color: white;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
}

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: rgba(0, 0, 0, 0.72);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.02em;
}

.nav-logo img {
  width: 24px;
  height: 24px;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}

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

/* ─── HERO ─── */
.hero {
  padding: 140px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(41, 151, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(48, 209, 88, 0.1);
  border: 1px solid rgba(48, 209, 88, 0.2);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--green);
  margin-bottom: 24px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f5f5f7 30%, #86868b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(17px, 2.5vw, 21px);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.5;
  font-weight: 400;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: white;
  padding: 14px 28px;
  border-radius: 100px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 24px rgba(41, 151, 255, 0.3);
}

.hero-cta:hover {
  transform: scale(1.04);
  box-shadow: 0 8px 32px rgba(41, 151, 255, 0.4);
}

.install-cmd {
  margin-top: 32px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 20px;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 13px;
  color: var(--green);
  cursor: pointer;
  transition: all 0.2s;
  max-width: 90vw;
  overflow-x: auto;
}

.install-cmd:hover {
  border-color: var(--green);
  background: rgba(48, 209, 88, 0.05);
}

.install-cmd .copy-hint {
  color: var(--text-tertiary);
  font-size: 11px;
  font-family: var(--font);
  font-weight: 500;
  white-space: nowrap;
}

/* ─── SECTION ─── */
section {
  max-width: 980px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.5;
  margin-bottom: 48px;
}

/* ─── SERVICES GRID ─── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.service-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--card-accent, var(--accent)), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

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

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.service-card .port {
  display: inline-block;
  font-family: 'SF Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Card accent colors */
.service-card.ai {
  --card-accent: var(--purple);
}

.service-card.ai .service-icon {
  background: rgba(191, 90, 242, 0.12);
}

.service-card.ai .port {
  background: rgba(191, 90, 242, 0.1);
  color: var(--purple);
}

.service-card.git {
  --card-accent: var(--orange);
}

.service-card.git .service-icon {
  background: rgba(255, 159, 10, 0.12);
}

.service-card.git .port {
  background: rgba(255, 159, 10, 0.1);
  color: var(--orange);
}

.service-card.web {
  --card-accent: var(--green);
}

.service-card.web .service-icon {
  background: rgba(48, 209, 88, 0.12);
}

.service-card.web .port {
  background: rgba(48, 209, 88, 0.1);
  color: var(--green);
}

/* ─── COMMANDS ─── */
.commands-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.cmd-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  transition: all 0.3s;
}

.cmd-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.cmd-card code {
  display: inline-block;
  font-family: 'SF Mono', monospace;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.cmd-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.cmd-card.primary {
  background: linear-gradient(135deg, rgba(41, 151, 255, 0.08), rgba(191, 90, 242, 0.06));
  border-color: rgba(41, 151, 255, 0.2);
}

/* ─── USE CASES ─── */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.usecase {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s;
}

.usecase:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.usecase-emoji {
  font-size: 36px;
  margin-bottom: 16px;
  display: block;
}

.usecase h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.usecase p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ─── TOOLKIT ─── */
.toolkit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.tool {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
  transition: all 0.3s;
}

.tool:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.tool-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.tool-desc {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ─── ARCHITECTURE ─── */
.arch-box {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  line-height: 1.4;
  background: #111;
  padding: 24px;
  border-radius: 12px;
  color: #e6e6e6;
  white-space: pre;
  overflow-x: auto;
}

.arch-box .purple { color: #a855f7; }
.arch-box .orange { color: #f97316; }
.arch-box .green  { color: #22c55e; }

/* ─── INSTALL SECTION ─── */
.install-section {
  text-align: center;
  padding: 100px 24px;
  position: relative;
}

.install-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(41, 151, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.install-steps {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin-top: 48px;
  flex-wrap: wrap;
}

.install-step {
  flex: 0 1 260px;
  text-align: center;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 16px;
}

.install-step h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.install-step p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ─── FOOTER ─── */
footer {
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  color: var(--text-tertiary);
  font-size: 12px;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

footer a:hover {
  color: var(--text-primary);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {

  .services-grid,
  .commands-grid,
  .usecases-grid,
  .toolkit-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .install-steps {
    flex-direction: column;
    align-items: center;
  }

  .arch-box {
    font-size: 11px;
    padding: 24px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }

  .toolkit-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

.fade-up {
  animation: fadeUp 0.8s ease-out forwards;
  opacity: 0;
}

.fade-up:nth-child(2) {
  animation-delay: 0.1s;
}

.fade-up:nth-child(3) {
  animation-delay: 0.2s;
}

.fade-up:nth-child(4) {
  animation-delay: 0.3s;
}