/* ============================================================
   Hisar Half Marathon — Blue Hour Edition (color experiment)
   Same km-stone structure as website-kmstone; different palette.

   Color theory: COMPLEMENTARY harmony
   Cool blue-hour asphalt ↔ warm laterite earth.
   The 20 minutes before amber sunrise — Haryana road, fog-blue
   sky, cut-bank soil. Not gold/wheat (kmstone), not navy/saffron
   (v1), not cream/terracotta, not purple, not neon-on-black.
   ============================================================ */

:root {
  /* Token names kept for structure parity; values remapped */
  --bg-predawn: #0E1520;       /* blue-hour void */
  --accent-sunrise: #D4652F;   /* laterite — primary accent / active km */
  --surface-asphalt: #243040;  /* cool blue-gray road surface */
  --text-wheat: #E2E7EE;       /* chalk / lane-paint white (cool) */
  --accent-signpost: #7A8FA3;  /* zinc guardrail — secondary metal */
  --accent-brick: #8F1E2A;     /* oxide signal — register CTA only */

  --font-display: "Rajdhani", "Arial Narrow", sans-serif;
  --font-body: "Work Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --rail-width: 4.5rem;
  --content-max: 42rem;
  --pad-x: 1.25rem;
  --focus-ring: 0 0 0 3px var(--bg-predawn), 0 0 0 5px var(--accent-sunrise);
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-predawn);
  color: var(--text-wheat);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  /* Blue-hour atmosphere: cool zenith glow + faint laterite horizon */
  background-image:
    radial-gradient(ellipse 110% 55% at 60% -8%, rgba(90, 120, 160, 0.14), transparent 55%),
    radial-gradient(ellipse 70% 35% at 15% 100%, rgba(212, 101, 47, 0.06), transparent 50%),
    linear-gradient(180deg, #121C2A 0%, var(--bg-predawn) 22%, var(--bg-predawn) 100%);
  background-attachment: fixed;
}

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

a {
  color: var(--accent-sunrise);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-signpost);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--pad-x);
  z-index: 1000;
  padding: 0.6rem 1rem;
  background: var(--accent-sunrise);
  color: var(--bg-predawn);
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 0.75rem;
}

/* ---------- KM RAIL ---------- */
.km-rail {
  position: fixed;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  /* Mobile: horizontal strip at bottom */
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.55rem 0.75rem calc(0.55rem + env(safe-area-inset-bottom));
  background: rgba(14, 21, 32, 0.92);
  border-top: 1px solid color-mix(in srgb, var(--surface-asphalt) 80%, transparent);
  backdrop-filter: blur(8px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.km-rail::-webkit-scrollbar {
  display: none;
}

.km-rail__track,
.km-rail__progress {
  display: none;
}

.km-marker {
  position: relative;
  flex: 0 0 auto;
  display: block;
  width: 3.35rem;
  text-decoration: none;
  color: var(--text-wheat);
  transform: rotate(var(--tilt, 0deg));
  transition: color 0.25s ease, filter 0.25s ease;
}

.km-marker__stripe {
  position: absolute;
  inset: 0 auto 0 0;
  width: 7px;
  background: repeating-linear-gradient(
    180deg,
    var(--text-wheat) 0 5px,
    var(--bg-predawn) 5px 10px
  );
  border-radius: 1px 0 0 1px;
  opacity: 0.95;
  /* Uneven edge — weathered stone */
  clip-path: polygon(0 2%, 100% 0, 100% 100%, 0 97%);
}

.km-marker__face {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 3.35rem;
  padding: 0.3rem 0.2rem 0.3rem 0.55rem;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.04), transparent 40%),
    var(--surface-asphalt);
  border: 1px solid color-mix(in srgb, var(--accent-signpost) 55%, transparent);
  border-left: none;
  /* Soften corners unevenly to avoid perfect UI chips */
  border-radius: 1px 3px 2px 0;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    1px 2px 0 rgba(0, 0, 0, 0.35);
  filter: contrast(1.02) saturate(0.95);
}

.km-marker__unit {
  font-family: var(--font-mono);
  font-size: 0.42rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.55;
  line-height: 1;
}

.km-marker__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1;
  letter-spacing: 0.02em;
  text-shadow: 0.5px 0.5px 0 rgba(0, 0, 0, 0.55);
}

.km-marker__label {
  font-family: var(--font-mono);
  font-size: 0.48rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-top: 0.12rem;
}

.km-marker.is-active {
  color: var(--bg-predawn);
  z-index: 1;
}

.km-marker.is-active .km-marker__face {
  background: var(--accent-sunrise);
  border-color: var(--accent-sunrise);
  filter: none;
}

.km-marker.is-active .km-marker__stripe {
  background: repeating-linear-gradient(
    180deg,
    var(--bg-predawn) 0 5px,
    var(--accent-sunrise) 5px 10px
  );
}

.km-marker.is-active .km-marker__label {
  opacity: 1;
  color: var(--bg-predawn);
}

/* Finish marker — banner/arch, not a km stone */
.km-marker--finish {
  transform: none;
  width: 3.6rem;
}

.km-marker--finish .km-marker__stripe {
  display: none;
}

.km-marker--finish .km-marker__arch {
  position: absolute;
  left: 10%;
  right: 10%;
  top: 0;
  height: 42%;
  border: 2px solid var(--accent-signpost);
  border-bottom: none;
  border-radius: 999px 999px 0 0;
  pointer-events: none;
  z-index: 1;
}

.km-marker--finish .km-marker__arch::before,
.km-marker--finish .km-marker__arch::after {
  content: "";
  position: absolute;
  bottom: -6px;
  width: 3px;
  height: 10px;
  background: var(--accent-signpost);
}

.km-marker--finish .km-marker__arch::before {
  left: -2px;
}

.km-marker--finish .km-marker__arch::after {
  right: -2px;
}

.km-marker--finish .km-marker__face {
  margin-top: 0.55rem;
  border-left: 1px solid color-mix(in srgb, var(--accent-signpost) 55%, transparent);
  border-radius: 0;
  padding: 0.2rem 0.15rem;
  min-height: 2.4rem;
  background: color-mix(in srgb, var(--surface-asphalt) 70%, var(--bg-predawn));
  /* Finish tape stripes */
  background-image: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 4px,
    rgba(122, 143, 163, 0.22) 4px,
    rgba(122, 143, 163, 0.22) 8px
  );
}

.km-marker--finish .km-marker__num {
  font-size: 0.95rem;
  letter-spacing: 0.12em;
}

.km-marker--finish .km-marker__label {
  margin-top: 0;
  letter-spacing: 0.16em;
}

.km-marker--finish.is-active .km-marker__arch,
.km-marker--finish.is-active .km-marker__arch::before,
.km-marker--finish.is-active .km-marker__arch::after {
  border-color: var(--accent-sunrise);
  background: var(--accent-sunrise);
}

.km-marker--finish.is-active .km-marker__arch {
  background: transparent;
}

.km-marker--finish.is-active .km-marker__face {
  background-color: var(--accent-sunrise);
  background-image: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 4px,
    rgba(14, 21, 32, 0.25) 4px,
    rgba(14, 21, 32, 0.25) 8px
  );
}

.km-marker:focus-visible {
  outline: none;
  box-shadow: none;
}

.km-marker:focus-visible .km-marker__face {
  box-shadow: var(--focus-ring);
}

/* Desktop: vertical left rail */
@media (min-width: 768px) {
  :root {
    --rail-width: 5.25rem;
  }

  .km-rail {
    top: 0;
    bottom: 0;
    left: 0;
    right: auto;
    width: var(--rail-width);
    flex-direction: column;
    justify-content: space-between;
    padding: 1.75rem 0.55rem;
    overflow: visible;
    background: transparent;
    border-top: none;
    border-right: none;
    backdrop-filter: none;
  }

  .km-rail__track {
    display: block;
    position: absolute;
    top: 1.5rem;
    bottom: 1.5rem;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: color-mix(in srgb, var(--surface-asphalt) 85%, var(--accent-signpost));
    z-index: 0;
  }

  .km-rail__progress {
    display: block;
    position: absolute;
    top: 1.5rem;
    left: 50%;
    width: 2px;
    height: 0;
    transform: translateX(-50%);
    background: var(--accent-sunrise);
    z-index: 0;
    transition: height 0.15s linear;
    box-shadow: 0 0 8px color-mix(in srgb, var(--accent-sunrise) 40%, transparent);
  }

  .km-marker {
    width: 3.6rem;
    z-index: 1;
  }

  .km-marker__face {
    min-height: 3.6rem;
  }

  .km-marker__num {
    font-size: 1.15rem;
  }

  .km-marker__label {
    font-size: 0.52rem;
  }
}

@media (min-width: 1100px) {
  :root {
    --rail-width: 6.5rem;
  }

  .km-marker {
    width: 4.25rem;
  }

  .km-marker__num {
    font-size: 1.35rem;
  }
}

/* ---------- PAGE LAYOUT ---------- */
.page {
  padding-bottom: 5.5rem; /* room for mobile rail */
}

@media (min-width: 768px) {
  .page {
    padding-left: var(--rail-width);
    padding-bottom: 0;
  }
}

.section {
  padding: 4.5rem var(--pad-x) 4rem;
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 55%, transparent);
}

.section__inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-km {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  margin: 0 0 0.5rem;
}

.section-km--finish {
  color: var(--accent-sunrise);
}

.section-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(1.45rem, 3.5vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
  color: var(--text-wheat);
}

.section-lede {
  margin: 0 0 2rem;
  font-size: 1.05rem;
  color: color-mix(in srgb, var(--text-wheat) 88%, transparent);
  max-width: 36rem;
}

/* ---------- HERO (KM 0) ---------- */
.section--hero {
  min-height: min(calc(100vh - 3.5rem), 56rem);
  display: flex;
  align-items: center;
  padding-top: 3rem;
  padding-bottom: 4rem;
  /* Road texture suggestion — horizontal asphalt grain, not stock photo */
  background-image:
    linear-gradient(90deg, transparent 0%, transparent 48%, rgba(61, 58, 52, 0.18) 50%, transparent 52%),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 48px,
      rgba(122, 143, 163, 0.04) 48px,
      rgba(122, 143, 163, 0.04) 49px
    );
  border-bottom-color: color-mix(in srgb, var(--accent-signpost) 35%, transparent);
}

.section--hero .section__inner {
  text-align: center;
  max-width: 42rem;
}

.title-sponsor {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--text-wheat) 70%, transparent);
  margin: 0 0 1.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.55rem 0.75rem;
}

.title-sponsor__logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  padding: 0;
  border: none;
  background: transparent;
}

.title-sponsor__logo img {
  width: clamp(9.5rem, 42vw, 13.5rem);
  height: auto;
  filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.35));
}

.title-sponsor__logo:hover {
  opacity: 0.9;
}

.title-sponsor__logo:focus-visible {
  box-shadow: var(--focus-ring);
}

.hero-brand {
  display: flex;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.hero-logo {
  width: clamp(12rem, 68vw, 22rem);
  height: auto;
  padding: 0;
  border: none;
  background: transparent;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.45));
}

.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  margin: 0 0 0.85rem;
}

.hero-meta__sep {
  margin: 0 0.4rem;
  opacity: 0.5;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 11vw, 4.4rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 0.85rem;
  color: var(--text-wheat);
  /* Stencil roughness */
  text-shadow:
    1px 1px 0 rgba(0, 0, 0, 0.45),
    -0.5px 0 0 rgba(212, 101, 47, 0.28);
}

.hero-tagline {
  font-size: 1.05rem;
  font-weight: 500;
  margin: 0 0 1.75rem;
  color: color-mix(in srgb, var(--text-wheat) 85%, var(--accent-sunrise));
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  max-width: 22rem;
  margin: 0 auto 1.75rem;
}

.countdown__unit {
  /* Flat race-board cells — not soft cards */
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--surface-asphalt) 70%, var(--accent-signpost));
  border-top: 2px solid var(--accent-signpost);
  padding: 0.65rem 0.25rem;
}

.countdown__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.25rem, 4vw, 1.6rem);
  color: var(--accent-sunrise);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.countdown__label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.65;
}

.hero-cta {
  display: flex;
  justify-content: center;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease;
}

.btn--register {
  background: var(--accent-brick);
  color: var(--text-wheat);
}

.btn--register:hover {
  color: var(--text-wheat);
  filter: brightness(1.12);
}

.btn--register:active {
  transform: translateY(1px);
}

/* ---------- ROUTE ---------- */
.route-visual {
  margin: 0 0 2rem;
  padding: 1rem 0.5rem;
  background: color-mix(in srgb, var(--surface-asphalt) 35%, transparent);
  border: 1px solid color-mix(in srgb, var(--surface-asphalt) 80%, var(--accent-signpost));
}

.route-svg {
  width: 100%;
  height: auto;
  display: block;
}

.route-caption {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-align: center;
  opacity: 0.5;
  margin-top: 0.65rem;
}

.support-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid color-mix(in srgb, var(--surface-asphalt) 70%, transparent);
}

.support-list li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 0.75rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 55%, transparent);
}

.support-list__key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-sunrise);
}

.support-list__val {
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--text-wheat) 90%, transparent);
}

@media (max-width: 480px) {
  .support-list li {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

/* ---------- CATEGORIES ---------- */
.category-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 560px) {
  .category-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

@media (min-width: 900px) {
  .category-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.category-tile {
  /* Interaction container for choosing a race distance — allowed as tile */
  padding: 1.35rem 1.2rem 1.5rem;
  background: color-mix(in srgb, var(--surface-asphalt) 40%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-signpost) 40%, transparent);
  border-left: 4px solid var(--accent-signpost);
}

.category-tile--half {
  border-left-color: var(--accent-sunrise);
}

.category-tile__code {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  margin: 0 0 0.75rem;
}

.category-tile__dist {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(2.4rem, 8vw, 3rem);
  line-height: 1;
  color: var(--accent-sunrise);
  margin: 0 0 0.5rem;
  font-variant-numeric: tabular-nums;
}

.category-tile__dist span {
  font-size: 0.9rem;
  margin-left: 0.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  font-weight: 500;
}

.category-tile__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 0.65rem;
}

.category-tile__desc {
  margin: 0;
  font-size: 0.92rem;
  color: color-mix(in srgb, var(--text-wheat) 85%, transparent);
}

/* ---------- WHY ---------- */
.why-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.why-list li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 55%, transparent);
}

.why-list__mark {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-signpost);
  padding-top: 0.2rem;
}

.why-list h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 0 0 0.35rem;
}

.why-list p {
  margin: 0;
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--text-wheat) 85%, transparent);
}

.why-list strong {
  color: var(--text-wheat);
  font-weight: 600;
}

/* ---------- REGISTRATION ---------- */
.section--register {
  background: color-mix(in srgb, var(--surface-asphalt) 18%, transparent);
}

.reg-banner {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.85rem 1rem;
  margin-bottom: 1.75rem;
  border: 1px solid var(--accent-signpost);
  background: color-mix(in srgb, var(--bg-predawn) 70%, var(--surface-asphalt));
  color: var(--text-wheat);
}

.reg-banner__tag {
  display: inline-block;
  margin-right: 0.5rem;
  padding: 0.1rem 0.4rem;
  background: var(--accent-sunrise);
  color: var(--bg-predawn);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  font-weight: 600;
}

.reg-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 28rem;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 520px) {
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-row label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-signpost);
}

.form-row input,
.form-row select {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.7rem 0.75rem;
  color: var(--text-wheat);
  background: var(--bg-predawn);
  border: 1px solid color-mix(in srgb, var(--surface-asphalt) 80%, var(--accent-signpost));
  border-radius: 0;
}

.form-row input.is-invalid,
.form-row select.is-invalid {
  border-color: #e8a0a0;
}

.field-error {
  margin: 0;
  min-height: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #e8a0a0;
}

.check.is-invalid {
  outline: 1px solid #e8a0a0;
  outline-offset: 4px;
}

.form-row input::placeholder {
  color: color-mix(in srgb, var(--text-wheat) 40%, transparent);
}

.form-row select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--accent-signpost) 50%),
    linear-gradient(135deg, var(--accent-signpost) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 3px), calc(100% - 12px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2rem;
}

.form-row select option {
  background: var(--bg-predawn);
  color: var(--text-wheat);
}

.form-checks {
  border: none;
  margin: 0.25rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.check {
  display: grid;
  grid-template-columns: 1.15rem 1fr;
  gap: 0.65rem;
  align-items: start;
  font-size: 0.88rem;
  color: color-mix(in srgb, var(--text-wheat) 88%, transparent);
  cursor: pointer;
}

.check input {
  margin-top: 0.2rem;
  accent-color: var(--accent-sunrise);
  width: 1rem;
  height: 1rem;
}

.form-note {
  min-height: 1.25rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-sunrise);
}

.form-note.is-error {
  color: #e8a0a0;
}

.success-mark {
  width: 3.25rem;
  height: 3.25rem;
  margin: 0 0 1.25rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--accent-signpost);
  background: color-mix(in srgb, var(--bg-predawn) 70%, var(--surface-asphalt));
}

.success-mark__icon {
  font-size: 1.35rem;
  line-height: 1;
  color: var(--accent-sunrise);
}

.success-card {
  max-width: 28rem;
  margin: 0 0 1.75rem;
  padding: 0.25rem 0;
  border-top: 1px solid color-mix(in srgb, var(--surface-asphalt) 80%, var(--accent-signpost));
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 80%, var(--accent-signpost));
}

.success-card__row {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.75rem;
  margin: 0;
  padding: 0.85rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 45%, transparent);
}

.success-card__row:last-child {
  border-bottom: none;
}

.success-card__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  padding-top: 0.2rem;
}

.success-card__value {
  font-size: 1rem;
  color: var(--text-wheat);
}

.success-next {
  max-width: 32rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
  counter-reset: success-step;
}

.success-next li {
  counter-increment: success-step;
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0.85rem;
  margin: 0;
  padding: 0.9rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 45%, transparent);
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--text-wheat) 85%, transparent);
}

.success-next li::before {
  content: counter(success-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--accent-signpost);
  padding-top: 0.2rem;
}

.success-next strong {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--text-wheat);
  font-weight: 600;
}

.success-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin: 0;
}

/* ---------- SPONSORS ---------- */
.finish-arch {
  margin: 0 0 1.75rem;
}

.finish-arch svg {
  width: 100%;
  height: auto;
  display: block;
}

.sponsor-tiers {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.sponsor-tier__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  margin: 0 0 0.85rem;
  font-weight: 500;
}

.sponsor-tier__row {
  display: grid;
  gap: 0.85rem;
}

@media (min-width: 520px) {
  .sponsor-tier__row {
    grid-template-columns: 1fr 1fr;
  }

  .sponsor-tier__row--assoc {
    grid-template-columns: 1fr 1fr;
    max-width: 24rem;
  }
}

.logo-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.45rem;
  border: 1px solid color-mix(in srgb, var(--accent-signpost) 45%, transparent);
  background: color-mix(in srgb, var(--surface-asphalt) 42%, transparent);
  color: var(--text-wheat);
  font-family: var(--font-body);
  font-weight: 500;
  padding: 1.25rem 1rem;
}

.logo-slot small {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  font-weight: 400;
}

.logo-slot--lg {
  min-height: 7.5rem;
  font-size: 1.1rem;
  border-color: var(--accent-sunrise);
}

.logo-slot--yokohama {
  background: #0B1018;
  border-style: solid;
  border-color: color-mix(in srgb, var(--accent-sunrise) 65%, transparent);
  padding: 1.5rem 1.25rem;
}

.logo-slot--yokohama img {
  width: min(100%, 22rem);
  height: auto;
  filter: none;
}

.logo-slot--md {
  min-height: 6.5rem;
  font-size: 0.95rem;
}

.logo-slot--sm {
  min-height: 4.5rem;
  font-size: 0.9rem;
  border-style: dashed;
  color: color-mix(in srgb, var(--text-wheat) 85%, transparent);
}

.logo-slot img {
  width: min(100%, 14rem);
  height: auto;
  display: block;
  object-fit: contain;
  filter: none;
}

.logo-slot--md img {
  width: min(100%, 12.5rem);
  max-height: 7.5rem;
}

.logo-slot--dark {
  background: #0B1018;
  border-style: solid;
  border-color: color-mix(in srgb, var(--accent-signpost) 55%, transparent);
  padding: 1.15rem 1rem 1rem;
}

.logo-slot--light {
  background: #ffffff;
  border-style: solid;
  border-color: color-mix(in srgb, var(--accent-signpost) 40%, transparent);
  color: #1a1a1a;
  padding: 1.15rem 1rem 1rem;
}

.logo-slot--light small {
  color: color-mix(in srgb, #243040 75%, transparent);
}

.partner-cta {
  margin: 2.25rem 0 0;
  font-size: 0.95rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.25rem;
}

.partner-cta__note {
  color: color-mix(in srgb, var(--text-wheat) 75%, transparent);
  font-size: 0.88rem;
}

.btn--ghost {
  background: transparent;
  color: var(--text-wheat);
  border: 1px solid var(--accent-signpost);
}

.btn--ghost:hover {
  color: var(--accent-sunrise);
  border-color: var(--accent-sunrise);
}

/* ---------- Top nav (homepage) ---------- */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem var(--pad-x);
  background: color-mix(in srgb, var(--bg-predawn) 92%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 65%, transparent);
  backdrop-filter: blur(10px);
}

@media (min-width: 768px) {
  .top-nav {
    padding-left: calc(var(--rail-width) + var(--pad-x));
  }
}

.top-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text-wheat);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.top-nav__brand img {
  width: 2.65rem;
  height: 2.65rem;
  object-fit: contain;
  background: transparent;
  border: none;
}

.top-nav__links {
  display: flex;
  align-items: center;
  gap: 0.75rem 1rem;
}

.top-nav__links > a:not(.top-nav__cta) {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  text-decoration: none;
}

.top-nav__links > a:not(.top-nav__cta):hover {
  color: var(--accent-sunrise);
}

.top-nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  background: var(--accent-brick);
  color: var(--text-wheat);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  text-decoration: none;
}

.top-nav__cta:hover {
  color: var(--text-wheat);
  filter: brightness(1.12);
}


/* ---------- ABOUT ---------- */
.about-community {
  margin: 0;
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--text-wheat) 85%, transparent);
}

.community-tags {
  display: block;
  margin-top: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--accent-signpost);
}

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--surface-asphalt);
  color: color-mix(in srgb, var(--text-wheat) 75%, transparent);
  padding: 2rem var(--pad-x) 2.5rem;
  font-size: 0.82rem;
}

@media (min-width: 768px) {
  .site-footer {
    padding-left: calc(var(--rail-width) + var(--pad-x));
  }
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.site-footer a {
  color: var(--text-wheat);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent-sunrise);
  text-decoration: underline;
}

.site-footer__people {
  margin: 0 0 0.85rem;
  line-height: 1.7;
}

.site-footer__people strong {
  color: var(--text-wheat);
  font-weight: 600;
}

.site-footer__social {
  margin: 0 0 1.25rem;
}

.site-footer__note {
  margin-left: 0.35rem;
  opacity: 0.65;
  font-size: 0.75rem;
}

.site-footer__legal {
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid color-mix(in srgb, var(--bg-predawn) 45%, transparent);
  font-size: 0.72rem;
  opacity: 0.7;
}

/* ---------- Subpages (register / partner) ---------- */
.subpage .km-rail {
  display: none;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem var(--pad-x);
  border-bottom: 1px solid color-mix(in srgb, var(--surface-asphalt) 70%, transparent);
  background: color-mix(in srgb, var(--bg-predawn) 88%, var(--surface-asphalt));
}

.page-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-wheat);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.page-header__brand img {
  width: 2.65rem;
  height: 2.65rem;
  object-fit: contain;
  background: transparent;
  border: none;
}

.page-header__back {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-signpost);
  text-decoration: none;
}

.page-header__back:hover {
  color: var(--accent-sunrise);
}

.page--form {
  padding-bottom: 0;
  padding-left: 0;
}

.page--form .section {
  min-height: calc(100vh - 10rem);
  padding-top: 3rem;
}

@media (min-width: 768px) {
  .subpage .site-footer {
    padding-left: var(--pad-x);
  }
}

/* --- production extras (legal / SEO launch) --- */
.form-note a {
  color: var(--accent-sunrise);
  text-decoration: underline;
}

.site-footer__links {
  margin: 0 0 1rem;
}

.logo-slot__pending {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.55;
}

.backend-notice {
  margin: 0 0 1.25rem;
  padding: 0.75rem 1rem;
  border: 1px solid color-mix(in srgb, var(--accent-sunrise) 45%, transparent);
  background: color-mix(in srgb, var(--surface-asphalt) 55%, transparent);
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--text-wheat);
}

.backend-notice[hidden] {
  display: none;
}

/* ---------- Legal docs ---------- */
.page--legal .section {
  min-height: auto;
  padding-top: 2.5rem;
  padding-bottom: 3rem;
}

.legal-doc {
  max-width: 42rem;
}

.legal-doc__meta {
  margin: -0.5rem 0 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--accent-signpost);
  line-height: 1.6;
}

.legal-doc h2 {
  margin: 1.75rem 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-wheat);
}

.legal-doc p,
.legal-doc li {
  font-size: 0.95rem;
  line-height: 1.7;
  color: color-mix(in srgb, var(--text-wheat) 88%, transparent);
}

.legal-doc ul {
  margin: 0.5rem 0 1rem;
  padding-left: 1.2rem;
}

.legal-doc a {
  color: var(--accent-sunrise);
}

.legal-doc__nav {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
}