@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&family=DM+Serif+Display:ital@0;1&display=swap');

:root {
  --bg: #0D0F14;
  --bg-surface: #13161E;
  --bg-card: #181C26;
  --teal: #0FA89A;
  --teal-dim: #0c8a7e;
  --teal-glow: rgba(15,168,154,0.12);
  --white: #FFFFFF;
  --text: #C8CDD8;
  --text-muted: #7A8299;
  --border: rgba(255,255,255,0.07);
  --border-teal: rgba(15,168,154,0.25);
  --font-body: 'DM Sans', sans-serif;
  --font-display: 'DM Serif Display', serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--white); }

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,15,20,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--white);
  letter-spacing: -0.01em;
}
.nav-logo span { color: var(--teal); }
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--white); }

/* MAIN LAYOUT */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}
.content-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* HERO */
.hero {
  padding: 5rem 2rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 500;
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  color: var(--white);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  max-width: 680px;
}
.hero p {
  font-size: 1.125rem;
  color: var(--text);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

/* BUTTONS */
.btn {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--teal);
  color: #000;
}
.btn-primary:hover {
  background: #12c4b4;
  color: #000;
}
.btn-outline {
  background: transparent;
  color: var(--teal);
  border: 1px solid var(--border-teal);
}
.btn-outline:hover {
  background: var(--teal-glow);
  color: var(--white);
}

/* SECTION HEADERS */
.section { padding: 4rem 0; }
.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}
.section-intro {
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 2.5rem;
}

/* CARDS */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover {
  border-color: var(--border-teal);
  transform: translateY(-2px);
}
.card-tag {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 0.5rem;
}
.card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.card-link {
  display: block;
  margin-top: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal);
  letter-spacing: 0.03em;
}

/* DATA TABLES */
.data-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin: 2rem 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
thead {
  background: var(--bg-card);
}
thead th {
  padding: 0.75rem 1rem;
  text-align: left;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}
tbody tr {
  border-bottom: 1px solid var(--border);
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: rgba(255,255,255,0.02); }
td {
  padding: 0.75rem 1rem;
  color: var(--text);
}
td.highlight { color: var(--teal); font-weight: 500; }
td.white { color: var(--white); font-weight: 500; }

/* METRIC PAGE SPECIFIC */
.metric-header {
  padding: 4rem 2rem 3rem;
  max-width: 1100px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}
.metric-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 2rem;
}
.metric-body h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--white);
  margin: 2rem 0 0.75rem;
}
.metric-body p {
  color: var(--text);
  margin-bottom: 1rem;
  line-height: 1.7;
}
.metric-body ul {
  padding-left: 1.25rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 1rem;
}

/* INFO BOXES */
.info-box {
  background: var(--teal-glow);
  border: 1px solid var(--border-teal);
  border-left: 3px solid var(--teal);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.875rem;
  color: var(--text);
}
.disclaimer {
  background: rgba(255,200,0,0.05);
  border: 1px solid rgba(255,200,0,0.15);
  border-left: 3px solid rgba(255,200,0,0.4);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* CALCULATOR */
.calc-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  max-width: 560px;
  margin: 2rem 0;
}
.calc-field {
  margin-bottom: 1.25rem;
}
.calc-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}
.calc-field input,
.calc-field select {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.6rem 0.85rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}
.calc-field input:focus,
.calc-field select:focus {
  border-color: var(--teal);
}
.calc-field select option { background: var(--bg-surface); }
.calc-result {
  background: var(--bg);
  border: 1px solid var(--border-teal);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  margin-top: 1.5rem;
  display: none;
}
.calc-result.visible { display: block; }
.result-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.result-value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 0.25rem;
}
.result-category {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* DEVICE CARD */
.device-specs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.spec-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
}
.spec-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}
.spec-value {
  font-size: 0.95rem;
  color: var(--white);
  font-weight: 500;
}

/* BREADCRUMB */
.breadcrumb {
  padding: 1rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--teal); }
.breadcrumb span { margin: 0 0.4rem; }

/* CROSS-LINKS */
.crosslinks {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
}
.crosslinks-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.crosslinks h4 {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.crosslink-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  list-style: none;
}
.crosslink-list li a {
  display: inline-block;
  padding: 0.4rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text);
  transition: all 0.15s;
}
.crosslink-list li a:hover {
  border-color: var(--border-teal);
  color: var(--teal);
}

/* FOOTER */
footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 0.5rem;
}
.footer-brand span { color: var(--teal); }
.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  max-width: 280px;
}
.footer-links {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}
.footer-col h5 {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.4rem; }
.footer-col a {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-col a:hover { color: var(--teal); }
.footer-bottom {
  max-width: 1100px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* STAT BARS */
.percentile-bar {
  height: 6px;
  background: var(--bg-surface);
  border-radius: 3px;
  margin: 0.5rem 0;
  overflow: hidden;
}
.percentile-fill {
  height: 100%;
  background: var(--teal);
  border-radius: 3px;
  transition: width 0.6s ease;
}

/* SCHEMA hidden */
script[type="application/ld+json"] { display: none; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding: 3rem 1.25rem 2.5rem; }
  .hero h1 { font-size: 2rem; }
  .container, .content-narrow { padding: 0 1.25rem; }
  .footer-inner { flex-direction: column; }
  .footer-links { gap: 2rem; }
  .crosslinks { padding: 2rem 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}