/* ============================================================
   Nordlight AI Marketing — styles.css
   Compact, token-driven. No build step.
   ============================================================ */

/* ---- Tokens ---- */
:root {
  --ink: #0E1116;
  --paper: #F4F1EA;
  --copper: #C9643A;
  --cold: #6FB4C4;
  --graphite: #2A2F37;
  --graphite-soft: #3A404A;
  --ink-70: rgba(14, 17, 22, 0.7);
  --ink-50: rgba(14, 17, 22, 0.5);
  --ink-15: rgba(14, 17, 22, 0.15);
  --ink-08: rgba(14, 17, 22, 0.08);
  --paper-70: rgba(244, 241, 234, 0.7);
  --paper-50: rgba(244, 241, 234, 0.5);
  --paper-15: rgba(244, 241, 234, 0.15);
  --paper-08: rgba(244, 241, 234, 0.08);
  --copper-deep: #A64F2B;

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter Tight", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --step--1: clamp(0.82rem, 0.78rem + 0.2vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.5vw, 1.45rem);
  --step-2: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --step-3: clamp(2rem, 1.6rem + 2vw, 3rem);
  --step-4: clamp(2.6rem, 1.8rem + 4vw, 4.8rem);

  --gap: clamp(1rem, 0.6rem + 1.6vw, 1.75rem);
  --section-y: clamp(3.5rem, 2rem + 6vw, 7rem);
  --wrap: 1180px;
  --radius: 2px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 220ms;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
  border-radius: var(--radius);
}

/* ---- Layout ---- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1.15rem, 0.6rem + 3vw, 2.5rem);
}
.section { padding-block: var(--section-y); }
.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 1rem + 3vw, 3.5rem); }

/* ---- Type ---- */
.kicker {
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper-deep);
  margin-bottom: 1rem;
}
.section-title {
  font-family: var(--serif);
  font-size: var(--step-3);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin-bottom: 1rem;
}
.section-lead {
  font-size: var(--step-1);
  color: var(--ink-70);
  line-height: 1.5;
  max-width: 40rem;
}

/* ---- Buttons & links ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85em 1.5em;
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn--primary {
  background: var(--copper);
  color: var(--paper);
  border-color: var(--copper);
}
.btn--primary:hover { background: var(--copper-deep); border-color: var(--copper-deep); }
.btn--primary:active { transform: translateY(1px); }
.btn--sm { padding: 0.6em 1.1em; }

.link-quiet {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink-70);
  border-bottom: 1px solid var(--ink-15);
  padding-bottom: 0.15em;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.link-quiet:hover { color: var(--ink); border-color: var(--ink); }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.7em 1.1em;
  border-radius: var(--radius);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---- Tag ---- */
.tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2em 0.5em;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  opacity: 0.75;
}
.tag--sample { color: var(--copper-deep); opacity: 1; }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--ink-08);
  transition: border-color var(--dur) var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--ink-15); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 68px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--serif);
  font-size: 1.32rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.wordmark-mark { width: 26px; height: 26px; color: var(--ink); }

.site-nav { display: flex; align-items: center; gap: clamp(1.25rem, 0.5rem + 2vw, 2.5rem); }
.site-nav ul { display: flex; gap: clamp(1.1rem, 0.5rem + 1.6vw, 2rem); }
.site-nav a {
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink-70);
  transition: color var(--dur) var(--ease);
  padding-block: 0.3em;
}
.site-nav a:hover { color: var(--ink); }
.nav-cta { color: var(--paper); }
.nav-cta:hover { color: var(--paper); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 42px;
  height: 42px;
  padding: 0;
  background: none;
  border: 1px solid var(--ink-15);
  border-radius: var(--radius);
}
.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 1.5px;
  margin-inline: auto;
  background: var(--ink);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child {
  transform: translateY(3.75px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

/* ---- Hero ---- */
.hero { padding-block-start: clamp(3rem, 1.5rem + 5vw, 6rem); padding-block-end: var(--section-y); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.85fr) minmax(0, 1fr);
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: start;
}
.hero-title {
  font-family: var(--serif);
  font-size: var(--step-4);
  font-weight: 380;
  line-height: 1.02;
  letter-spacing: -0.025em;
  max-width: 16ch;
  margin-bottom: clamp(1.25rem, 0.8rem + 1.5vw, 1.9rem);
}
.hero-title em {
  font-style: italic;
  color: var(--copper-deep);
  font-weight: 380;
}
.hero-lead {
  font-size: var(--step-1);
  color: var(--ink-70);
  max-width: 42ch;
  line-height: 1.55;
  margin-bottom: clamp(1.75rem, 1rem + 2vw, 2.5rem);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem 2rem;
  margin-bottom: clamp(2.5rem, 1.5rem + 3vw, 3.5rem);
}

/* Signal chip */
.signal-chip {
  border-top: 1px solid var(--ink-15);
  padding-top: 1.15rem;
  max-width: 40rem;
}
.signal-chip-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-70);
  margin-bottom: 1rem;
}
.signal-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.75rem, 0.4rem + 1.4vw, 1.75rem);
}
.signal-metric { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.1em; }
.signal-num {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.6rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.signal-unit {
  font-family: var(--serif);
  font-size: clamp(1rem, 0.8rem + 1vw, 1.4rem);
  color: var(--copper-deep);
}
.signal-label {
  flex-basis: 100%;
  font-size: 0.76rem;
  line-height: 1.35;
  color: var(--ink-50);
  margin-top: 0.35rem;
}
.signal-note {
  font-size: 0.72rem;
  color: var(--ink-50);
  margin-top: 1rem;
}

/* Hero aside */
.hero-aside {
  border-top: 1px solid var(--ink-15);
  padding-top: 1.15rem;
  position: sticky;
  top: 100px;
}
.aside-label {
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: 1rem;
}
.aside-list { display: grid; gap: 0.9rem; }
.aside-list li {
  display: flex;
  gap: 0.85rem;
  align-items: baseline;
  font-size: var(--step-0);
  font-weight: 400;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--ink-08);
  line-height: 1.35;
}
.aside-list span {
  font-family: var(--serif);
  font-size: var(--step--1);
  color: var(--copper-deep);
  font-variant-numeric: tabular-nums;
}
.aside-note {
  font-size: 0.82rem;
  color: var(--ink-50);
  line-height: 1.45;
  margin-top: 1.25rem;
}

/* ---- Strip ---- */
.strip {
  border-block: 1px solid var(--ink-08);
  padding-block: 1.35rem;
  background: color-mix(in srgb, var(--ink) 2%, var(--paper));
}
.strip-inner {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 0.5rem + 2vw, 2.5rem);
  flex-wrap: wrap;
}
.strip-label {
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-50);
  white-space: nowrap;
}
.strip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}
.strip-list li {
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink-70);
  white-space: nowrap;
}

/* ---- Method / steps ---- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink-15);
}
.step {
  padding: clamp(1.5rem, 1rem + 2vw, 2.5rem) clamp(1rem, 0.5rem + 1.6vw, 2rem) 0 0;
  border-right: 1px solid var(--ink-08);
  border-bottom: 1px solid var(--ink-08);
  padding-bottom: clamp(1.5rem, 1rem + 2vw, 2.5rem);
}
.step:last-child { border-right: none; padding-right: 0; }
.step-index {
  font-family: var(--serif);
  font-size: var(--step--1);
  color: var(--copper-deep);
  font-variant-numeric: tabular-nums;
  margin-bottom: 1.25rem;
}
.step-body h3 {
  font-family: var(--serif);
  font-size: var(--step-2);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 0.75rem;
}
.step-body p { font-size: var(--step-0); color: var(--ink-70); line-height: 1.55; }

/* ---- Dark band (workroom) ---- */
.band {
  background: var(--ink);
  color: var(--paper);
  padding-block: var(--section-y);
  position: relative;
  overflow: hidden;
}
.band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 55% at 18% 0%, rgba(111, 180, 196, 0.16), transparent 60%),
    radial-gradient(50% 50% at 85% 15%, rgba(201, 100, 58, 0.14), transparent 65%);
  pointer-events: none;
}
.band > .wrap { position: relative; }
.band .kicker { color: var(--cold); }
.band .section-lead { color: var(--paper-70); }

.band-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 1rem + 4vw, 4rem);
  align-items: center;
}

/* Macbook-style product demo */
.demo-wrap { perspective: 1600px; }
.demo-frame {
  border-radius: 10px 10px 20px 20px;
  background: linear-gradient(180deg, #1B2028, #14181E);
  border: 1px solid var(--paper-15);
  padding: 10px 10px 14px;
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.7);
  transform: rotateY(-4deg) rotateX(2deg);
  transition: transform 600ms var(--ease);
  will-change: transform;
}
.demo-frame:hover { transform: rotateY(0deg) rotateX(0deg); }
.demo-notch {
  width: 46%;
  height: 14px;
  margin: 0 auto 8px;
  border-radius: 0 0 6px 6px;
  background: #0A0D11;
}
.demo-screen {
  border-radius: 4px;
  background: #0A0D11;
  border: 1px solid var(--paper-08);
  overflow: hidden;
  font-size: 0.72rem;
}
.demo-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--paper-08);
}
.demo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--graphite-soft); }
.demo-dot:nth-child(1) { background: #6E4A40; }
.demo-dot:nth-child(2) { background: #7A6A3C; }
.demo-dot:nth-child(3) { background: #3F6B52; }
.demo-url {
  margin-left: 10px;
  font-size: 0.62rem;
  color: var(--paper-50);
  letter-spacing: 0.02em;
}
.demo-body { padding: 14px; display: grid; gap: 12px; }
.demo-row { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.demo-title { font-family: var(--serif); font-size: 1rem; color: var(--paper); letter-spacing: -0.01em; }
.demo-live {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cold);
}
.demo-live::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cold);
  box-shadow: 0 0 0 0 rgba(111, 180, 196, 0.6);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(111, 180, 196, 0.5); }
  70% { box-shadow: 0 0 0 7px rgba(111, 180, 196, 0); }
  100% { box-shadow: 0 0 0 0 rgba(111, 180, 196, 0); }
}
.demo-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.demo-stat {
  border: 1px solid var(--paper-08);
  border-radius: 3px;
  padding: 9px 10px;
  background: rgba(255,255,255,0.015);
}
.demo-stat b {
  display: block;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--paper);
  letter-spacing: -0.01em;
}
.demo-stat span { font-size: 0.58rem; color: var(--paper-50); letter-spacing: 0.02em; }
.demo-chart {
  border: 1px solid var(--paper-08);
  border-radius: 3px;
  padding: 10px 10px 6px;
}
.demo-chart svg { width: 100%; height: 64px; }
.demo-chart-line {
  fill: none;
  stroke: var(--cold);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 340;
  stroke-dashoffset: 340;
  animation: draw 3.4s var(--ease) forwards 0.4s;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
.demo-foot {
  border-top: 1px solid var(--paper-08);
  padding-top: 10px;
  display: flex;
  justify-content: space-between;
  font-size: 0.58rem;
  color: var(--paper-50);
  letter-spacing: 0.02em;
}

/* Band list */
.band-list { display: grid; gap: 0; margin-top: 2rem; border-top: 1px solid var(--paper-15); }
.band-list li {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding-block: 1rem;
  border-bottom: 1px solid var(--paper-08);
  color: var(--paper-70);
  font-size: var(--step-0);
  line-height: 1.4;
}
.band-list li span {
  font-family: var(--serif);
  color: var(--cold);
  font-size: var(--step--1);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

/* ---- Work ---- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 1rem + 2.5vw, 2.75rem);
}
.case {
  border-top: 1px solid var(--ink-15);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.case-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.case-head .tag--sample { color: var(--ink-50); opacity: 1; }
.case-index {
  font-family: var(--serif);
  font-size: var(--step--1);
  color: var(--ink-50);
  font-variant-numeric: tabular-nums;
}
.case h3 {
  font-family: var(--serif);
  font-size: var(--step-2);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.01em;
}
.case p { font-size: var(--step-0); color: var(--ink-70); line-height: 1.55; }
.case-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 0.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ink-08);
}
.case-meta dt {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: 0.25rem;
}
.case-meta dd {
  font-family: var(--serif);
  font-size: var(--step-1);
  margin: 0;
  letter-spacing: -0.01em;
}
.case-note { font-size: 0.72rem; color: var(--ink-50); }

.work-disclaimer {
  font-size: var(--step--1);
  color: var(--ink-50);
  margin-top: clamp(2rem, 1rem + 2vw, 3rem);
  max-width: 46rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--ink-08);
}

/* ---- Engagements ---- */
.tiers { border-top: 1px solid var(--ink-15); }
.tier {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.6fr) auto;
  gap: clamp(1rem, 0.5rem + 2vw, 2.5rem);
  align-items: start;
  padding-block: clamp(1.5rem, 1rem + 2vw, 2.25rem);
  border-bottom: 1px solid var(--ink-08);
  transition: background var(--dur) var(--ease);
}
.tier:hover { background: var(--ink-08); }
.tier-name {
  font-family: var(--serif);
  font-size: var(--step-2);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 0.35rem;
}
.tier-tag { font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--copper-deep); }
.tier-desc { font-size: var(--step-0); color: var(--ink-70); line-height: 1.55; max-width: 44ch; }
.tier-detail {
  font-size: var(--step--1);
  color: var(--ink-50);
  margin-top: 0.6rem;
}
.tier-cta {
  align-self: center;
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--ink-15);
  padding-bottom: 0.1em;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.tier-cta:hover { border-color: var(--copper); color: var(--copper-deep); }

/* ---- Contact ---- */
.contact { border-top: 1px solid var(--ink-15); }
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 1rem + 4vw, 4.5rem);
  align-items: start;
}
.contact-copy .section-title { max-width: 14ch; }
.contact-points { display: grid; gap: 1rem; margin-top: 2rem; }
.contact-points li {
  display: flex;
  gap: 0.75rem;
  font-size: var(--step-0);
  color: var(--ink-70);
  line-height: 1.45;
}
.contact-points li::before {
  content: "—";
  color: var(--copper-deep);
  flex-shrink: 0;
}
.contact-alt { font-size: var(--step--1); color: var(--ink-50); margin-top: 2rem; }
.contact-alt a { border-bottom: 1px solid var(--ink-15); color: var(--ink-70); }
.contact-alt a:hover { color: var(--ink); border-color: var(--ink); }

.form { display: grid; gap: 1.15rem; }
.field { display: grid; gap: 0.4rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.15rem; }
.field label {
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.field label .req { color: var(--copper-deep); margin-left: 0.15em; }
.field input,
.field select,
.field textarea {
  font: inherit;
  font-size: var(--step-0);
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink-15);
  border-radius: var(--radius);
  padding: 0.7em 0.85em;
  width: 100%;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.field textarea { resize: vertical; min-height: 6.5rem; line-height: 1.5; }
.field select { appearance: none; cursor: pointer; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--ink-50); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color:var(--copper);
  box-shadow: 0 0 0 3px rgba(201, 100, 58, 0.15);
}
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"],
.field select[aria-invalid="true"] {
  border-color: var(--copper-deep);
  background: rgba(201, 100, 58, 0.04);
}
.field-error {
  font-size: 0.72rem;
  color: var(--copper-deep);
  min-height: 1em;
  line-height: 1.3;
}
.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin-top: 0.4rem;
}
.form-status {
  font-size: var(--step--1);
  color: var(--ink-70);
  line-height: 1.4;
}
.form-status.is-ok { color: #3F6B52; }
.form-status.is-error { color: var(--copper-deep); }
.form-note { font-size: 0.72rem; color: var(--ink-50); line-height: 1.4; }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--ink-15);
  padding-block: clamp(2.5rem, 1.5rem + 3vw, 4rem) 2rem;
  font-size: var(--step--1);
  color: var(--ink-70);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 1rem + 2vw, 3rem);
  margin-bottom: 2.5rem;
}
.footer-brand .wordmark { margin-bottom: 0.85rem; }
.footer-brand p { max-width: 30ch; color: var(--ink-50); line-height: 1.5; }
.footer-col h4 {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: 1rem;
}
.footer-col ul { display: grid; gap: 0.6rem; }
.footer-col a { color: var(--ink-70); transition: color var(--dur) var(--ease); }
.footer-col a:hover { color: var(--ink); }
.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ink-08);
  font-size: 0.76rem;
  color: var(--ink-50);
}
.footer-legal { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.footer-legal a { color: var(--ink-50); }
.footer-legal a:hover { color: var(--ink); }

/* ---- Scroll reveal (JS-toggled) ---- */
.reveal { opacity: 1; }
.has-motion .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
.has-motion .reveal.is-visible { opacity: 1; transform: none; }

/* ---- Responsive ---- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-aside { position: static; }
  .hero-title { max-width: 20ch; }
  .steps { grid-template-columns: 1fr; }
  .step {
    border-right: none;
    padding-right: 0;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0 1.25rem;
  }
  .step-index { margin-bottom: 0; grid-row: span 2; padding-top: 0.15rem; }
  .band-grid { grid-template-columns: 1fr; }
  .demo-frame { transform: none; }
  .work-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem clamp(1.15rem, 0.6rem + 3vw, 2.5rem) 1.5rem;
    background: var(--paper);
    border-bottom: 1px solid var(--ink-15);
    transform-origin: top;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav ul li { border-bottom: 1px solid var(--ink-08); }
  .site-nav ul a { display: block; padding-block: 0.85em; font-size: var(--step-0); }
  .nav-cta { margin-top: 1rem; align-self: flex-start; }
  .header-inner { position: relative; }

  .signal-row { grid-template-columns: 1fr 1fr; }
  .signal-metric:last-child { grid-column: 1 / -1; }
  .field-row { grid-template-columns: 1fr; }
  .tier {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .tier-cta { justify-self: start; margin-top: 0.25rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .strip-inner { gap: 0.75rem 1.25rem; }
}

@media (max-width: 480px) {
  .hero-actions { gap: 1rem 1.25rem; }
  .btn { width: 100%; }
  .link-quiet { width: auto; }
  .hero-actions .btn { flex: 1 1 100%; }
  .signal-row { grid-template-columns: 1fr; }
  .signal-metric:last-child { grid-column: auto; }
  .demo-stats { grid-template-columns: 1fr; }
  .case-meta { grid-template-columns: 1fr 1fr; }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .demo-frame { transform: none; }
  .demo-chart-line { stroke-dashoffset: 0; }
  .demo-live::before { animation: none; }
  .has-motion .reveal { opacity: 1; transform: none; }
}

/* ---- Print ---- */
@media print {
  .site-header, .nav-toggle, .hero-actions, .form, .strip { display: none; }
  body { background: #fff; color: #000; }
  .band { background: #fff; color: #000; }
}