/* ============================================
   OnDeckLLM Marketing Site
   Dark theme, baseball accents, developer-sexy
   ============================================ */

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

:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --surface: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-glow: rgba(88, 166, 255, 0.15);
  --accent-hover: #79c0ff;
  --green: #3fb950;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--accent); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn:hover {
  background: var(--bg-alt);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg);
  border-color: var(--accent-hover);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all var(--transition);
}
.nav.scrolled {
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
}
.nav-logo:hover { color: var(--text); }
.nav-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}
.nav-logo-text { letter-spacing: -0.3px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.12;
  filter: blur(2px);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 30%, var(--bg) 75%);
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
}
.hero-logo {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  margin: 0 auto 32px;
  object-fit: cover;
  box-shadow: 0 0 40px rgba(88, 166, 255, 0.2);
}
.hero-headline {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 40px;
}
.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-fade {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  z-index: 1;
}

/* Install command */
.install-cmd {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px 10px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--green);
}
.install-cmd code {
  font-family: inherit;
  user-select: all;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.copy-btn.copied { color: var(--green); border-color: var(--green); }

/* Provider pills */
.providers { text-align: center; }
.providers-label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}
.provider-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.provider-pill {
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
}
.provider-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* --- Sections --- */
.section {
  padding: 100px 0;
}
.section-alt {
  background: var(--bg-alt);
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  text-align: center;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.section-sub {
  font-size: 17px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 56px;
}

/* --- Steps --- */
.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}
.step {
  flex: 1;
  max-width: 280px;
  text-align: center;
  padding: 0 16px;
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 20px;
}
.step-icon {
  color: var(--accent);
  margin-bottom: 16px;
}
.step h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.5;
}
.step-code {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green);
  margin-bottom: 12px;
  word-break: break-all;
}
.step-connector {
  display: flex;
  align-items: center;
  padding-top: 80px;
  flex-shrink: 0;
}

/* --- Feature Cards --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(88, 166, 255, 0.08);
}
.feature-icon {
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* --- Accent Section --- */
.accent-section {
  position: relative;
  padding: 120px 24px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}
.accent-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.accent-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: blur(1px);
}
.accent-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,17,23,0.9) 0%, rgba(13,17,23,0.7) 50%, rgba(13,17,23,0.9) 100%);
}
.accent-content {
  position: relative;
  z-index: 1;
  text-align: center;
}
.accent-content blockquote p {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.accent-cta {
  margin-top: 32px;
}

/* --- Ecosystem --- */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}
.eco-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  text-align: center;
  transition: all var(--transition);
}
.eco-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.eco-badge {
  margin-bottom: 16px;
}
.eco-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.eco-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 16px;
}
.eco-link {
  font-size: 14px;
  font-weight: 600;
}

/* --- Footer --- */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
}
.footer-top {
  text-align: center;
  margin-bottom: 60px;
}
.support-cards {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.support-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  min-width: 160px;
}
.support-card:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.footer-bottom {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--text-muted);
}
.footer-logo {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
}
.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-copy {
  font-size: 13px;
  color: var(--text-muted);
  opacity: 0.6;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }
.fade-in:nth-child(5) { transition-delay: 0.4s; }
.fade-in:nth-child(6) { transition-delay: 0.5s; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  animation: fadeInUp 0.6s ease forwards;
}
@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger feature cards */
.features-grid .reveal:nth-child(1) { transition-delay: 0s; }
.features-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.features-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.features-grid .reveal:nth-child(4) { transition-delay: 0.24s; }
.features-grid .reveal:nth-child(5) { transition-delay: 0.32s; }
.features-grid .reveal:nth-child(6) { transition-delay: 0.4s; }

/* Diamond pattern decorative border (baseball theme) */
.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 40px;
  margin: 16px auto 0;
  border: 2px solid var(--accent);
  transform: rotate(45deg);
  opacity: 0.4;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }
  .step-connector {
    padding-top: 0;
    transform: rotate(90deg);
  }
  .step { max-width: 360px; }
}

@media (max-width: 640px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 260px;
    flex-direction: column;
    padding: 80px 32px 32px;
    background: var(--bg-alt);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform var(--transition);
    gap: 24px;
  }
  .nav-links.open {
    transform: translateX(0);
  }
  .nav-links a { font-size: 16px; }
  .nav-toggle { display: flex; }

  .hero { padding: 100px 20px 60px; min-height: auto; }
  .hero-logo { width: 64px; height: 64px; margin-bottom: 24px; }
  .hero-ctas { flex-direction: column; }
  .install-cmd { width: 100%; justify-content: space-between; }

  .features-grid { grid-template-columns: 1fr; }
  .ecosystem-grid { grid-template-columns: 1fr; }

  .section { padding: 64px 0; }
  .accent-section { padding: 80px 20px; }

  .support-cards { flex-direction: column; align-items: stretch; }
  .support-card { flex-direction: row; justify-content: center; min-width: auto; }
}