/* ============================================================
   EPOW — styles.css
   Implements DESIGN.md. Tokens first, then base, then components.
   ============================================================ */

/* ---------- Fonts (self-hosted, decision #15) ---------- */
@font-face {
  font-family: "Bricolage Grotesque";
  src: url("../fonts/BricolageGrotesque.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: "Public Sans";
  src: url("../fonts/PublicSans.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/IBMPlexMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/IBMPlexMono-Medium.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --ink: #0a101f;
  --surface: #111a2e;
  --surface-2: #18233b;
  --line: #243149;
  --text: #edf1f7;
  --text-dim: #93a1b7;
  --signal: #f0a226;
  --signal-deep: #c77f14;

  --font-display: "Bricolage Grotesque", "Public Sans", system-ui, sans-serif;
  --font-body: "Public Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;

  --container: 1140px;
  --radius-card: 12px;
  --radius-ctl: 8px;
  --section-pad: 128px;
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 28px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--signal);
  text-decoration: none;
}
a:hover {
  color: var(--signal-deep);
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--signal);
  color: var(--ink);
  padding: 8px 16px;
  z-index: 200;
  border-radius: 0 0 var(--radius-ctl) 0;
}
.skip-link:focus {
  left: 0;
  color: var(--ink);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }
}

/* ---------- Type scale ---------- */
h1,
h2 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}
h1 {
  font-size: 36px;
  line-height: 42px;
  font-weight: 700;
}
h2 {
  font-size: 28px;
  line-height: 34px;
  font-weight: 600;
}
h3 {
  font-family: var(--font-body);
  font-size: 20px;
  line-height: 28px;
  font-weight: 600;
  margin: 0 0 12px;
}
@media (min-width: 768px) {
  h1 {
    font-size: 56px;
    line-height: 64px;
  }
  h2 {
    font-size: 40px;
    line-height: 48px;
  }
  h3 {
    font-size: 22px;
    line-height: 30px;
  }
}

p {
  margin: 0 0 20px;
  max-width: 68ch;
  color: var(--text-dim);
}
p strong {
  color: var(--text);
}

.kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 16px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 16px;
}

.lede {
  font-size: 19px;
  line-height: 30px;
}

/* ---------- Sections & band rhythm ---------- */
.section {
  padding: 72px 0;
}
.section--raised {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
@media (min-width: 768px) {
  .section {
    padding: var(--section-pad) 0;
  }
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(24, 35, 59, 0.92);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--text);
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.wordmark:hover {
  color: var(--text);
}
.wordmark .tick {
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 18px;
}
.nav-links {
  display: none;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-dim);
  font-size: 15px;
  font-weight: 500;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}
.nav-cta {
  display: none;
}
@media (min-width: 960px) {
  .nav-links,
  .nav-cta {
    display: inline-flex;
  }
  .nav-toggle {
    display: none;
  }
}

.nav-toggle {
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-ctl);
  color: var(--text);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
}
.mobile-menu {
  display: none;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.mobile-menu.is-open {
  display: block;
}
.mobile-menu ul {
  list-style: none;
  margin: 0;
  padding: 16px 24px 24px;
}
.mobile-menu li {
  padding: 10px 0;
}
.mobile-menu a {
  color: var(--text);
  font-size: 17px;
  font-weight: 500;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 24px;
  border-radius: var(--radius-ctl);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn--primary {
  background: var(--signal);
  color: var(--ink);
}
.btn--primary:hover {
  background: var(--signal-deep);
  color: var(--ink);
}
.btn--secondary {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}
.btn--secondary:hover {
  border-color: var(--signal);
  color: var(--signal);
}
.btn--block {
  width: 100%;
}

.cta-note {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  color: var(--text-dim);
  margin-top: 12px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}
.hero h1 {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}
.hero .lede {
  margin: 0 auto 40px;
}
@media (min-width: 768px) {
  .hero {
    padding: 160px 0 96px;
  }
}

/* Framed dashboard (Container Scroll donor skeleton, re-tokened, motion cut) */
.dash-frame {
  max-width: 900px;
  margin: 64px auto 0;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 20px;
  padding: 12px;
}
.dash-frame__inner {
  border: 1px solid var(--line);
  background: var(--ink);
  border-radius: 12px;
  overflow: hidden;
}

/* ---------- Stat Ledger (signature) ---------- */
.ledger {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
  margin: 48px 0 8px;
}
@media (min-width: 768px) {
  .ledger {
    grid-template-columns: repeat(var(--ledger-cols, 3), 1fr);
  }
}
.ledger-item {
  border-left: 1px solid var(--line);
  padding-left: 24px;
}
.ledger-item .figure {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 36px;
  line-height: 40px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.ledger-item .figure::before {
  content: "▸";
  color: var(--signal);
  font-size: 20px;
}
@media (min-width: 768px) {
  .ledger-item .figure {
    font-size: 48px;
    line-height: 52px;
  }
}
.ledger-item .claim {
  margin: 12px 0 8px;
  color: var(--text);
  font-size: 16px;
  line-height: 25px;
}
.ledger-item .source {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  color: var(--text-dim);
}

/* ---------- Service rows / cards ---------- */
.service-row {
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 880px) {
  .service-row {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }
  .service-row--flip .service-copy {
    order: 2;
  }
}
.service-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: 32px;
}
.section--raised .service-visual {
  background: var(--ink);
}
.text-link {
  font-weight: 600;
}
.text-link::after {
  content: " →";
}

/* ---------- Steps (engagement sequence) ---------- */
.steps {
  list-style: none;
  margin: 48px 0 0;
  padding: 0;
  display: grid;
  gap: 32px;
  counter-reset: step;
}
@media (min-width: 880px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}
.steps li {
  position: relative;
  padding-top: 44px;
}
.steps li::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 14px;
  color: var(--signal);
  border: 1px solid var(--line);
  border-radius: var(--radius-ctl);
  padding: 4px 9px;
  background: var(--surface);
}
.steps h3 {
  margin-bottom: 8px;
}
.steps p {
  font-size: 15px;
  line-height: 24px;
  margin: 0;
}

/* ---------- Evidence columns (Testimonials donor, repurposed: decision #13) ---------- */
.evidence-wrap {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
  max-height: 620px;
  overflow: hidden;
  position: relative;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
  margin-top: 48px;
}
@media (min-width: 700px) {
  .evidence-wrap {
    grid-template-columns: 1fr 1fr;
  }
  .evidence-col:nth-child(2) {
    display: block;
  }
}
@media (min-width: 1000px) {
  .evidence-wrap {
    grid-template-columns: 1fr 1fr 1fr;
  }
}
.evidence-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
  animation: evidence-scroll var(--dur, 40s) linear infinite;
}
.evidence-col:nth-child(2) {
  --dur: 52s;
  display: none;
}
.evidence-col:nth-child(3) {
  --dur: 46s;
  display: none;
}
@media (min-width: 700px) {
  .evidence-col:nth-child(2) {
    display: flex;
  }
}
@media (min-width: 1000px) {
  .evidence-col:nth-child(3) {
    display: flex;
  }
}
@keyframes evidence-scroll {
  to {
    transform: translateY(-50%);
  }
}
.evidence-card {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-card);
  padding: 32px;
}
.evidence-card .figure {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 32px;
  line-height: 38px;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}
.evidence-card .claim {
  color: var(--text);
  margin: 10px 0 12px;
  font-size: 16px;
  line-height: 25px;
}
.evidence-card .source {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

/* ---------- FAQ accordion (native details) ---------- */
.faq-list {
  border-top: 1px solid var(--line);
  margin-top: 48px;
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 24px 0;
  font-weight: 600;
  font-size: 18px;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--signal);
  font-size: 22px;
  flex: none;
}
.faq-item[open] summary::after {
  content: "−";
}
.faq-item .answer {
  padding: 0 0 24px;
}
.faq-item .answer p {
  margin-bottom: 12px;
}

/* ---------- Forms ---------- */
.form {
  max-width: 480px;
}
.form label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 24px 0 8px;
}
.form input,
.form select,
.form textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-ctl);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  padding: 13px 14px;
}
.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--signal);
}
.form textarea {
  min-height: 120px;
  resize: vertical;
}
.form .btn {
  margin-top: 32px;
}
.form-note {
  display: none;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  background: var(--surface);
  border-radius: var(--radius-ctl);
  padding: 14px 16px;
  font-size: 15px;
  color: var(--text);
}
.form-note.is-visible {
  display: block;
}

/* ---------- Credentials block (About) ---------- */
.creds {
  margin: 32px 0;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
  max-width: 560px;
}
.creds ul {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}
.creds ul:last-child {
  margin-bottom: 0;
}
.creds-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 6px;
}
.creds-label + ul {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}
.creds li {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 22px;
  color: var(--text-dim);
  padding: 6px 0;
}
.creds li::before {
  content: "▸ ";
  color: var(--signal);
}

.team-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
  margin-top: 40px;
}
@media (min-width: 700px) {
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.team-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: 32px;
}
.team-card .photo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid var(--line);
  object-fit: cover;
  margin-bottom: 20px;
}
.team-card .role {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- CTA band ---------- */
.cta-band {
  text-align: center;
}
.cta-band p {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
}
.footer-grid {
  display: grid;
  gap: 32px;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}
.site-footer p,
.site-footer li,
.site-footer a {
  font-size: 15px;
}
.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-footer li {
  padding: 4px 0;
}
.site-footer a {
  color: var(--text-dim);
}
.site-footer a:hover {
  color: var(--text);
}
.footer-legal {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------- Utilities ---------- */
.center {
  text-align: center;
}
.center p,
.center .kicker {
  margin-left: auto;
  margin-right: auto;
}
.mt-0 {
  margin-top: 0;
}
.diagram {
  width: 100%;
  height: auto;
}

/* ---------- Motion budget (decision #10) ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .evidence-col {
    animation: none;
  }
  * {
    transition-duration: 0.01ms !important;
  }
}

.footer-acronym {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--signal);
  margin: 8px 0 6px;
}