/* ============================================================
   Capacity — Engineering-blueprint visual system
   AI that handles your peak season.
   ============================================================ */

/* ===== Design tokens ===== */
:root {
  /* Primary */
  --signal: #0066FF;
  --signal-soft: #2D7FFF;
  --signal-ghost: #EAF2FF;
  --graphite: #1A1D24;
  --graphite-2: #2C313A;
  --blueprint: #E8ECF1;
  --blueprint-2: #F4F6F9;
  --white-tech: #FFFFFF;

  /* Accent */
  --amber: #FF9800;
  --amber-soft: #FFF3E0;
  --green-ok: #00B67A;

  /* Neutrals */
  --steel: #5A6472;
  --steel-2: #8A92A0;
  --rule: #D6DBE2;
  --rule-strong: #9CA5B2;

  /* Fonts */
  --sans: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;

  /* Spacing (strict 8px grid) */
  --s-1: 8px;
  --s-2: 16px;
  --s-3: 24px;
  --s-4: 32px;
  --s-5: 48px;
  --s-6: 64px;
  --s-7: 96px;
  --s-8: 128px;

  /* Radii */
  --r-1: 2px;
  --r-2: 4px;
}

/* ===== Reset & base ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--graphite);
  background: var(--blueprint);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'kern' 1, 'liga' 1, 'cv11' 1;
}
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--graphite);
}
h1 { font-size: clamp(40px, 5vw, 72px); line-height: 1.05; }
h2 { font-size: clamp(28px, 3.5vw, 48px); line-height: 1.1; }
h3 { font-size: clamp(20px, 2.2vw, 28px); line-height: 1.25; font-weight: 600; }
h4 { font-size: 18px; line-height: 1.3; font-weight: 600; }
p  { margin: 0 0 var(--s-2) 0; }
p:last-child { margin-bottom: 0; }

.lead { font-size: clamp(18px, 2vw, 22px); line-height: 1.55; color: var(--graphite); max-width: 640px; }

.mono {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.2;
}

.mono-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--steel);
  letter-spacing: 0.04em;
}

.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
  padding: 4px 8px;
  background: var(--signal-ghost);
  border-radius: var(--r-1);
}

.eyebrow-plain {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
}

.num-display {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--graphite);
  line-height: 0.95;
}

/* ===== Layout ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--s-4);
}
@media (max-width: 720px) { .container { padding: 0 var(--s-3); } }

.section { padding: var(--s-7) 0; }
.section-sm { padding: var(--s-6) 0; }
.section-lg { padding: var(--s-8) 0; }
@media (max-width: 880px) {
  .section { padding: var(--s-6) 0; }
  .section-sm { padding: var(--s-5) 0; }
  .section-lg { padding: var(--s-7) 0; }
}

/* Grid helpers */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--s-4);
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-4); }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--s-4); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); }
@media (max-width: 880px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
}

/* Rules */
.rule-thin { border: none; border-top: 1px solid var(--rule); margin: 0; }
.rule-strong { border: none; border-top: 1px solid var(--graphite); margin: 0; }
.rule-dashed { border: none; border-top: 1px dashed var(--rule-strong); margin: 0; }

/* Schematic tick rule — engineering drawing divider */
.rule-tick {
  position: relative;
  height: 12px;
  background:
    linear-gradient(to right, var(--rule-strong) 1px, transparent 1px) repeat-x bottom / 40px 6px,
    linear-gradient(to right, transparent 0 calc(100% - 1px), var(--rule-strong) calc(100% - 1px)) no-repeat bottom / 100% 1px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--r-1);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 48px;
  white-space: nowrap;
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--signal);
  color: var(--white-tech);
}
.btn-primary:hover {
  background: var(--signal-soft);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--graphite);
  border-color: var(--graphite);
}
.btn-secondary:hover {
  background: var(--graphite);
  color: var(--blueprint);
}

.btn-ghost {
  background: transparent;
  color: var(--signal);
  padding: 14px 16px;
}
.btn-ghost:hover { text-decoration: underline; text-underline-offset: 4px; }

.btn .arrow {
  display: inline-block;
  margin-left: 8px;
  transition: transform 0.15s ease;
}
.btn:hover .arrow { transform: translateX(3px); }

/* ===== Cards ===== */
.card {
  background: var(--white-tech);
  border: 1px solid var(--rule);
  border-radius: var(--r-2);
  padding: var(--s-4);
  transition: all 0.15s ease;
}

.card-interactive:hover {
  border-color: var(--graphite);
  transform: translateY(-2px);
}

.card-dark {
  background: var(--graphite);
  color: var(--blueprint);
  border-color: var(--graphite);
}
.card-dark h2, .card-dark h3, .card-dark h4 { color: var(--white-tech); }

.card-signal {
  background: var(--signal-ghost);
  border-color: var(--signal);
}

/* ===== Navigation ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--blueprint);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: saturate(180%) blur(6px);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-2) var(--s-4);
  max-width: 1280px;
  margin: 0 auto;
  min-height: 64px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--graphite);
}
.nav-brand-mark {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-4);
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--graphite);
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--signal); }
.nav-cta { font-size: 13px; padding: 10px 18px; min-height: 40px; }

.nav-mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  padding: 0;
  background: transparent;
}
.nav-mobile-toggle span {
  width: 22px;
  height: 2px;
  background: var(--graphite);
  transition: all 0.2s ease;
}

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-mobile-toggle { display: flex; }
}

.nav-mobile-drawer {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--blueprint);
  padding: var(--s-4);
  transform: translateX(100%);
  transition: transform 0.2s ease;
  overflow-y: auto;
  z-index: 99;
  border-top: 1px solid var(--rule);
}
.nav-mobile-drawer[data-open="true"] { transform: translateX(0); }
.nav-mobile-link {
  display: block;
  padding: var(--s-2) 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--graphite);
  border-bottom: 1px solid var(--rule);
  min-height: 48px;
  display: flex;
  align-items: center;
}
.nav-mobile-sublink {
  display: block;
  padding: 12px 0 12px var(--s-3);
  font-size: 14px;
  color: var(--steel);
  min-height: 44px;
  display: flex;
  align-items: center;
}
.nav-mobile-section-title {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
  margin: var(--s-3) 0 var(--s-1) 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--signal);
}
.nav-mobile-cta {
  margin-top: var(--s-4);
  padding-top: var(--s-3);
  border-top: 1px dashed var(--rule-strong);
}

/* ===== Dashboard mockup — signature visual ===== */
.dashboard-mock {
  background: var(--graphite);
  color: var(--blueprint);
  border-radius: var(--r-2);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  overflow: hidden;
  border: 1px solid var(--graphite);
}
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--graphite-2);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-2);
  border-bottom: 1px solid var(--graphite);
}
.dashboard-header-right { color: var(--signal); }
.dashboard-section {
  padding: 16px 20px;
  border-bottom: 1px solid var(--graphite-2);
}
.dashboard-section:last-child { border-bottom: none; }

.queue-row {
  display: grid;
  grid-template-columns: 20px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 8px 0;
  color: var(--blueprint);
  border-bottom: 1px dashed var(--graphite-2);
}
.queue-row:last-child { border-bottom: none; }
.queue-status {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.queue-status.live { background: var(--green-ok); box-shadow: 0 0 8px var(--green-ok); }
.queue-status.hold { background: var(--amber); }
.queue-status.queue { background: var(--steel); }
.queue-label { color: var(--blueprint); }
.queue-time { font-variant-numeric: tabular-nums; color: var(--steel-2); font-size: 12px; }

.capacity-bar {
  margin-top: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--steel-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 0;
}
.capacity-bar .num { color: var(--signal); font-size: 14px; font-weight: 600; letter-spacing: 0; text-transform: none; }

.transcript-line {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding: 6px 0;
  font-size: 13px;
  line-height: 1.5;
}
.transcript-line .role {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-2);
  padding-top: 3px;
}
.transcript-line.ai .role { color: var(--signal); }
.transcript-line .text { color: var(--blueprint); }

/* ===== Stat block ===== */
.stat-block {
  text-align: left;
}
.stat-block .num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 500;
  line-height: 1;
  color: var(--graphite);
  letter-spacing: -0.02em;
}
.stat-block .rule-above {
  height: 1px;
  background: var(--graphite);
  margin-bottom: var(--s-2);
}
.stat-block .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  margin-top: var(--s-1);
  line-height: 1.4;
}

/* ===== Capability / feature list items ===== */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.feature-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: var(--s-2);
  padding: var(--s-2) 0;
  border-bottom: 1px solid var(--rule);
}
.feature-item:last-child { border-bottom: none; }
.feature-item .mark {
  width: 24px;
  height: 24px;
  border: 1.5px solid var(--signal);
  border-radius: var(--r-1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--signal);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  margin-top: 2px;
}

/* ===== Forms ===== */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--graphite);
}
.form-input, .form-select, .form-textarea {
  font-family: var(--sans);
  font-size: 15px;
  padding: 14px 16px;
  background: var(--white-tech);
  border: 1.5px solid var(--rule);
  border-radius: var(--r-1);
  color: var(--graphite);
  transition: all 0.15s ease;
  min-height: 48px;
  width: 100%;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-ghost);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-error { color: #D32F2F; font-size: 12px; font-family: var(--mono); margin-top: 4px; }

/* ===== Page intro ===== */
.page-intro {
  padding: var(--s-6) 0 var(--s-5);
  border-bottom: 1px solid var(--rule);
}
.breadcrumb {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: var(--s-3);
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb a { color: var(--signal); }
.breadcrumb a:hover { text-decoration: underline; }

/* ===== Hero ===== */
.hero {
  padding: var(--s-7) 0 var(--s-6);
  position: relative;
  border-bottom: 1px solid var(--rule);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--s-6);
  align-items: center;
}
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--s-5); }
}
.hero h1 { margin-bottom: var(--s-3); }
.hero-lead { margin-bottom: var(--s-4); }
.hero-cta-group {
  display: flex;
  gap: var(--s-2);
  flex-wrap: wrap;
  margin-bottom: var(--s-4);
}
.hero-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--steel);
  letter-spacing: 0.04em;
}
.hero-meta strong { color: var(--graphite); font-weight: 600; }

/* Blueprint grid background for select sections */
.bg-blueprint {
  background:
    linear-gradient(var(--rule) 1px, transparent 1px) 0 0 / 100% 32px,
    linear-gradient(90deg, var(--rule) 1px, transparent 1px) 0 0 / 32px 100%,
    var(--blueprint-2);
  position: relative;
}
.bg-blueprint::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, var(--blueprint) 0%, transparent 10%, transparent 90%, var(--blueprint) 100%);
  pointer-events: none;
}

/* ===== CTA Block ===== */
.cta-block {
  background: var(--graphite);
  color: var(--blueprint);
  padding: var(--s-7) 0;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(var(--graphite-2) 1px, transparent 1px) 0 0 / 100% 48px,
    linear-gradient(90deg, var(--graphite-2) 1px, transparent 1px) 0 0 / 48px 100%;
  opacity: 0.5;
  pointer-events: none;
}
.cta-block-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--s-4);
}
.cta-block h2 { color: var(--white-tech); margin: var(--s-2) 0 var(--s-3); }
.cta-block .lead { color: var(--blueprint); margin-left: auto; margin-right: auto; }
.cta-block .btn-primary { margin-top: var(--s-3); }

/* ===== Footer ===== */
footer {
  background: var(--graphite);
  color: var(--blueprint);
  padding: var(--s-6) 0 var(--s-4);
}
footer a { color: var(--blueprint); }
footer a:hover { color: var(--signal); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr 1fr;
  gap: var(--s-4);
  margin-bottom: var(--s-5);
}
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-brand {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--s-1);
}
.footer-tagline {
  font-size: 14px;
  color: var(--steel-2);
  line-height: 1.55;
  margin-bottom: var(--s-2);
  max-width: 280px;
}
.footer-section-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: var(--s-2);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--graphite-2);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 13px; color: var(--blueprint); }

.footer-base {
  border-top: 1px solid var(--graphite-2);
  padding-top: var(--s-3);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s-2);
  font-size: 12px;
  color: var(--steel-2);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.footer-base a { color: var(--steel-2); }
.footer-base a:hover { color: var(--signal); }

/* ===== Compare / versus lists ===== */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-4);
  margin-top: var(--s-4);
}
@media (max-width: 880px) { .compare-grid { grid-template-columns: 1fr; } }
.compare-col { padding: var(--s-4); border-radius: var(--r-2); border: 1px solid var(--rule); }
.compare-col-negative { border-color: var(--rule); background: var(--blueprint-2); }
.compare-col-positive { border-color: var(--signal); background: var(--white-tech); }
.compare-header {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--s-3);
}
.compare-col-negative .compare-header { color: var(--steel); }
.compare-col-positive .compare-header { color: var(--signal); }
.compare-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  line-height: 1.55;
  border-bottom: 1px dashed var(--rule);
}
.compare-item:last-child { border-bottom: none; }
.compare-item-mark {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 12px;
  padding-top: 2px;
}
.compare-col-negative .compare-item-mark { color: var(--steel); }
.compare-col-positive .compare-item-mark { color: var(--signal); }

/* ===== Accessibility ===== */
:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== Utility classes ===== */
.t-center { text-align: center; }
.t-right { text-align: right; }
.mb-1 { margin-bottom: var(--s-1); }
.mb-2 { margin-bottom: var(--s-2); }
.mb-3 { margin-bottom: var(--s-3); }
.mb-4 { margin-bottom: var(--s-4); }
.mb-5 { margin-bottom: var(--s-5); }
.mt-1 { margin-top: var(--s-1); }
.mt-2 { margin-top: var(--s-2); }
.mt-3 { margin-top: var(--s-3); }
.mt-4 { margin-top: var(--s-4); }
.mt-5 { margin-top: var(--s-5); }

.hide-mobile { display: block; }
.show-mobile { display: none; }
@media (max-width: 720px) {
  .hide-mobile { display: none; }
  .show-mobile { display: block; }
}