/* WasteCalc API - Shared Stylesheet */
/* Theme: auto-suggest / dark developer API aesthetic */

:root {
  --bg: #0a0e1a;
  --surface: #111827;
  --surface-2: #1a2235;
  --border: #1e2d40;
  --border-subtle: #162030;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-green: #10b981;
  --accent-green-hover: #059669;
  --accent-orange: #f59e0b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --code-bg: #0d1117;
  --code-border: #21262d;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 0 1px rgba(59, 130, 246, 0.2), 0 4px 20px rgba(59, 130, 246, 0.1);
  --max-width: 1160px;
  --header-height: 64px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', Consolas, 'Courier New', monospace;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
a:focus, button:focus, input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Skip nav */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}
.sr-only-focusable:focus {
  position: fixed;
  top: 10px; left: 10px;
  width: auto; height: auto;
  padding: 12px 20px; margin: 0;
  overflow: visible; clip: auto;
  white-space: normal;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  z-index: 10000;
  border-radius: var(--radius);
}

/* Layout */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section--alt { background: var(--surface); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}
.logo svg { color: var(--accent); }
.logo-dot { color: var(--accent-green); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }
.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-weight: 600 !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--accent-hover) !important; color: #fff !important; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--accent);
}
.btn-green {
  background: var(--accent-green);
  color: #fff;
}
.btn-green:hover {
  background: var(--accent-green-hover);
  color: #fff;
  transform: translateY(-1px);
}
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius-lg); }

/* Hero */
.hero {
  padding: 96px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse at center, rgba(59,130,246,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--text);
}
.hero h1 span { color: var(--accent); }
.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats {
  display: flex;
  gap: 32px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
}
.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
}
.hero-stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }
.hero-stat-green .hero-stat-value { color: var(--accent-green); }

/* Code block */
.code-panel {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.code-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--code-border);
}
.code-dots { display: flex; gap: 6px; }
.code-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.code-dot-red { background: #ff5f57; }
.code-dot-yellow { background: #ffbd2e; }
.code-dot-green { background: #28c840; }
.code-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}
.code-tabs {
  display: flex;
  border-bottom: 1px solid var(--code-border);
}
.code-tab {
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  cursor: pointer;
  border: none;
  background: transparent;
}
.code-tab.active {
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  margin-bottom: -1px;
}
.code-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-x: auto;
}
.code-body pre { white-space: pre; }
.tok-key { color: #7ee787; }
.tok-str { color: #a5d6ff; }
.tok-num { color: #ff9f60; }
.tok-punc { color: #8b949e; }
.tok-kw { color: #ff7b72; }
.tok-comment { color: #8b949e; font-style: italic; }
.tok-field { color: #d2a8ff; }
.tok-url { color: var(--accent); }
.tok-method { color: var(--accent-orange); font-weight: 600; }

/* Features */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text);
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 56px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
}
.icon-blue { background: rgba(59,130,246,0.12); }
.icon-green { background: rgba(16,185,129,0.12); }
.icon-orange { background: rgba(245,158,11,0.12); }
.icon-purple { background: rgba(139,92,246,0.12); }
.icon-red { background: rgba(239,68,68,0.12); }
.icon-teal { background: rgba(20,184,166,0.12); }
.feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.feature-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.steps::before {
  content: '';
  position: absolute;
  top: 28px; left: 15%;
  width: 70%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), var(--border), transparent);
}
.step { text-align: center; padding: 32px 20px; }
.step-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
}
.step-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.step-desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* Use cases */
.use-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.use-case-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
}
.use-case-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.uc-blue::before { background: var(--accent); }
.uc-green::before { background: var(--accent-green); }
.uc-orange::before { background: var(--accent-orange); }
.use-case-icon { font-size: 2rem; margin-bottom: 16px; }
.use-case-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.use-case-desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.65; margin-bottom: 20px; }
.use-case-list { list-style: none; }
.use-case-list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 4px 0;
  padding-left: 18px;
  position: relative;
}
.use-case-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-size: 0.75rem;
}

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--accent);
  background: var(--surface-2);
  box-shadow: var(--shadow-glow);
}
.pricing-badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 100px;
  white-space: nowrap;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.pricing-tier {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 8px;
}
.price-amount { font-size: 2.8rem; font-weight: 800; color: var(--text); letter-spacing: -0.03em; }
.price-period { font-size: 0.9rem; color: var(--text-dim); }
.price-calls {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}
.pricing-features { list-style: none; margin-bottom: 32px; }
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 7px 0;
}
.pricing-features li::before {
  content: '✓';
  color: var(--accent-green);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.pricing-cta { width: 100%; justify-content: center; }

/* FAQ */
.faq-list { max-width: 760px; }
.faq-item {
  border-bottom: 1px solid var(--border-subtle);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 600;
  text-align: left;
  font-family: inherit;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  width: 24px; height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-dim);
  transition: transform 0.2s, background 0.2s;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(59,130,246,0.1);
  color: var(--accent);
}
.faq-answer {
  display: none;
  padding-bottom: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* Email capture */
.email-capture {
  background: linear-gradient(135deg, rgba(59,130,246,0.08) 0%, rgba(16,185,129,0.06) 100%);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  text-align: center;
}
.capture-title { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; margin-bottom: 12px; }
.capture-desc { color: var(--text-muted); margin-bottom: 36px; font-size: 1rem; max-width: 480px; margin-left: auto; margin-right: auto; }
.capture-form {
  display: flex;
  gap: 12px;
  max-width: 520px;
  margin: 0 auto 16px;
}
.capture-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}
.capture-input::placeholder { color: var(--text-dim); }
.capture-input:focus { border-color: var(--accent); }
.capture-note { font-size: 0.8rem; color: var(--text-dim); }
.capture-success {
  display: none;
  color: var(--accent-green);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px;
}

/* Footer */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 260px;
  line-height: 1.65;
}
.footer-heading {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--text-dim);
}
.footer-bottom a { color: var(--text-dim); }
.footer-bottom a:hover { color: var(--text-muted); }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-dim);
  padding: 16px 0;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb-sep { color: var(--border); }

/* Page hero (inner pages) */
.page-hero {
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--border-subtle);
}
.page-hero h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 12px; letter-spacing: -0.02em; }
.page-hero p { font-size: 1rem; color: var(--text-muted); max-width: 560px; line-height: 1.7; }

/* Pricing page extras */
.pricing-comparison {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin-top: 56px;
}
.pricing-comparison th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
.pricing-comparison td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-muted);
}
.pricing-comparison td:first-child { color: var(--text); font-weight: 500; }
.pricing-comparison tr:hover td { background: rgba(255,255,255,0.02); }
.check { color: var(--accent-green); font-weight: 700; }
.dash { color: var(--text-dim); }

/* Docs page */
.docs-grid { display: grid; grid-template-columns: 240px 1fr; gap: 48px; align-items: start; }
.docs-nav { position: sticky; top: calc(var(--header-height) + 24px); }
.docs-nav-section { margin-bottom: 28px; }
.docs-nav-heading {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.docs-nav-links { list-style: none; }
.docs-nav-links li { margin-bottom: 4px; }
.docs-nav-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  padding: 4px 0;
  transition: color 0.2s;
}
.docs-nav-links a:hover, .docs-nav-links a.active { color: var(--accent); }
.docs-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
  letter-spacing: -0.01em;
}
.docs-content h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.docs-content h3 { font-size: 1.05rem; font-weight: 700; margin: 24px 0 10px; color: var(--text); }
.docs-content p { color: var(--text-muted); line-height: 1.75; margin-bottom: 16px; font-size: 0.92rem; }
.docs-content ul { color: var(--text-muted); padding-left: 20px; margin-bottom: 16px; font-size: 0.92rem; line-height: 1.75; }
.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
}
.docs-content pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
}
.endpoint-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.method-post {
  background: rgba(16,185,129,0.12);
  color: var(--accent-green);
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.75rem;
}
.method-get {
  background: rgba(59,130,246,0.12);
  color: var(--accent);
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.75rem;
}
.param-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 0.85rem; }
.param-table th {
  text-align: left;
  padding: 8px 12px;
  background: var(--surface-2);
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.param-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-muted);
  vertical-align: top;
}
.param-table td:first-child { font-family: var(--font-mono); color: var(--accent); font-size: 0.82rem; }
.param-required { color: #ef4444; font-size: 0.72rem; font-weight: 600; }
.param-optional { color: var(--text-dim); font-size: 0.72rem; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .docs-grid { grid-template-columns: 1fr; }
  .docs-nav { position: static; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero { padding: 64px 0 56px; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 16px; }
  .steps::before { display: none; }
  .use-cases { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .capture-form { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .nav-links { display: none; }
}