/* Seismo Trace — Diamodis Nursery track-support
   Russo One + Nunito Sans · flare pink · teal · amber · mint field
   Standalone; not Beacon rail / Abacus beads / Tide dial / Pegboard / Marble Run */

:root {
  --sz-ink: #121C28;
  --sz-field: #EAF7F4;
  --sz-field-deep: #D2EEE8;
  --sz-surface: #FFFFFF;
  --sz-flare: #FF3366;
  --sz-flare-deep: #E01E4F;
  --sz-teal: #00BFA5;
  --sz-teal-deep: #009E88;
  --sz-amber: #FFC400;
  --sz-mute: #3A4854;
  --sz-line: rgba(18, 28, 40, 0.12);
  --sz-line-strong: rgba(18, 28, 40, 0.28);
  --sz-ok: #00A86B;
  --sz-miss: #E53935;
  --font-sz-display: "Russo One", "Arial Black", sans-serif;
  --font-sz-body: "Nunito Sans", "Trebuchet MS", sans-serif;
  --sz-soft: cubic-bezier(0.22, 1, 0.36, 1);
  --sz-spring: cubic-bezier(0.22, 1.4, 0.36, 1);
  --sz-fast: 200ms var(--sz-soft);
  --sz-delay: 0ms;
}

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

html { scroll-behavior: smooth; }

body.sz-body {
  margin: 0;
  min-height: 100vh;
  color: var(--sz-ink);
  font-family: var(--font-sz-body);
  font-size: 16px;
  line-height: 1.55;
  background:
    radial-gradient(880px 500px at 100% 0%, rgba(255, 51, 102, 0.14), transparent 55%),
    radial-gradient(720px 460px at 0% 40%, rgba(0, 191, 165, 0.12), transparent 50%),
    radial-gradient(600px 400px at 55% 100%, rgba(255, 196, 0, 0.14), transparent 55%),
    linear-gradient(165deg, var(--sz-field) 0%, #F5FFFC 48%, var(--sz-field-deep) 100%);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }

.sz-skip {
  position: absolute;
  left: 12px;
  top: -120px;
  z-index: 300;
  padding: 10px 14px;
  background: var(--sz-flare);
  color: #fff;
  font-family: var(--font-sz-display);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 2px;
}
.sz-skip:focus { top: 12px; }

/* ——— Hop nav ——— */
.sz-hop {
  position: sticky;
  top: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 3vw, 2rem);
  background: rgba(18, 28, 40, 0.94);
  color: #fff;
  border-bottom: 3px solid var(--sz-flare);
  backdrop-filter: blur(12px);
}

.sz-hop-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  color: #fff;
  border-radius: 2px;
}
.sz-hop-brand:focus-visible {
  outline: 2px solid var(--sz-amber);
  outline-offset: 3px;
}
.sz-hop-brand strong {
  font-family: var(--font-sz-display);
  font-size: 1.25rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.sz-hop-brand span {
  font-family: var(--font-sz-display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sz-amber);
}

.sz-hop-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
}
.sz-hop-links a {
  padding: 0.45rem 0.7rem;
  font-family: var(--font-sz-display);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  border: 1px solid transparent;
  border-radius: 2px;
  transition: color var(--sz-fast), border-color var(--sz-fast), background var(--sz-fast);
}
.sz-hop-links a:hover,
.sz-hop-links a[aria-current="page"] {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.06);
}
.sz-hop-links a:focus-visible {
  outline: 2px solid var(--sz-amber);
  outline-offset: 2px;
}

/* ——— Mast ——— */
.sz-mast {
  padding: clamp(1.4rem, 3.5vw, 2.25rem) clamp(1rem, 3vw, 2rem) 1rem;
  max-width: 960px;
  margin: 0 auto;
}
.sz-mast-kicker {
  margin: 0 0 0.35rem;
  font-family: var(--font-sz-display);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sz-flare-deep);
}
.sz-mast h1 {
  margin: 0 0 0.4rem;
  font-family: var(--font-sz-display);
  font-size: clamp(2rem, 5vw, 3.1rem);
  letter-spacing: 0.02em;
  line-height: 1;
  text-transform: uppercase;
}
.sz-mast > p {
  margin: 0;
  max-width: 34rem;
  color: var(--sz-mute);
}

/* ——— Sensor plate lookup ——— */
.sz-sensor {
  position: relative;
  max-width: 960px;
  margin: 0 auto 1.25rem;
  padding: 0 clamp(1rem, 3vw, 2rem);
}

.sz-sensor-plate {
  position: relative;
  padding: 1.15rem 1.2rem 1.25rem;
  background: var(--sz-surface);
  border: 1px solid var(--sz-line);
  border-radius: 2px;
  box-shadow: 0 16px 36px rgba(18, 28, 40, 0.08);
  overflow: hidden;
}

.sz-sensor-plate::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: linear-gradient(180deg, var(--sz-flare), var(--sz-teal));
}

.sz-needle {
  position: absolute;
  right: 1.1rem;
  top: 1.1rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--sz-line-strong);
  background:
    radial-gradient(circle at 50% 50%, var(--sz-amber) 0 3px, transparent 4px),
    conic-gradient(from 200deg, transparent 0 70%, rgba(255, 51, 102, 0.35) 70% 100%);
  pointer-events: none;
}
.sz-needle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 2px;
  height: 18px;
  margin-left: -1px;
  margin-top: -16px;
  background: var(--sz-flare);
  transform-origin: bottom center;
  transform: rotate(-18deg);
  border-radius: 1px;
  transition: transform 180ms ease;
}
.sz-needle.is-live::after {
  animation: szNeedle 900ms ease-in-out infinite;
}
.sz-needle.is-tick::after {
  animation: szNeedleSnap 420ms var(--sz-spring);
}
@keyframes szNeedle {
  0%, 100% { transform: rotate(-22deg); }
  50% { transform: rotate(18deg); }
}
@keyframes szNeedleSnap {
  0% { transform: rotate(-30deg); }
  40% { transform: rotate(28deg); }
  100% { transform: rotate(-8deg); }
}

.sz-sensor-head {
  margin-bottom: 0.85rem;
  padding-right: 4rem;
}
.sz-sensor-head h2 {
  margin: 0 0 0.25rem;
  font-family: var(--font-sz-display);
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.sz-sensor-head p {
  margin: 0;
  color: var(--sz-mute);
  font-size: 0.95rem;
}

.sz-form {
  display: grid;
  gap: 0.75rem;
}
.sz-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.sz-field {
  display: grid;
  gap: 0.3rem;
}
.sz-field > span {
  font-family: var(--font-sz-display);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sz-mute);
  transition: color var(--sz-fast), transform var(--sz-fast);
}
.sz-field input {
  appearance: none;
  width: 100%;
  min-height: 2.85rem;
  padding: 0.55rem 0.85rem;
  font-family: var(--font-sz-body);
  font-size: 1rem;
  color: var(--sz-ink);
  background: var(--sz-field);
  border: 1.5px solid var(--sz-line-strong);
  border-radius: 2px;
  outline: none;
  transition: border-color var(--sz-fast), box-shadow var(--sz-fast), background var(--sz-fast);
}
.sz-field.is-focus > span {
  color: var(--sz-flare);
  transform: translateX(2px);
}
.sz-field.is-focus input {
  border-color: var(--sz-flare);
  background: #fff;
  box-shadow: inset 0 -3px 0 var(--sz-flare);
}
.sz-field input:focus-visible {
  outline: 2px solid var(--sz-teal);
  outline-offset: 2px;
}

.sz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sz-btn,
a.sz-btn,
button.sz-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.5rem 1.2rem;
  font-family: var(--font-sz-display);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: transform var(--sz-fast), background var(--sz-fast), color var(--sz-fast), border-color var(--sz-fast), box-shadow var(--sz-fast);
}
.sz-btn:focus-visible {
  outline: 2px solid var(--sz-teal);
  outline-offset: 3px;
}
.sz-btn:active { transform: translateY(1px); }
.sz-btn--block { width: 100%; }
.sz-btn--flare {
  background: var(--sz-flare);
  border-color: var(--sz-flare);
  color: var(--sz-ink);
  box-shadow: 0 12px 28px rgba(255, 51, 102, 0.28);
}
.sz-btn--flare:hover {
  background: var(--sz-flare-deep);
  border-color: var(--sz-ink);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 var(--sz-amber);
}
.sz-btn--teal {
  background: var(--sz-teal);
  border-color: var(--sz-teal);
  color: var(--sz-ink);
}
.sz-btn--teal:hover {
  background: var(--sz-teal-deep);
  border-color: var(--sz-ink);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 var(--sz-amber);
}
.sz-btn--ghost {
  background: var(--sz-surface);
  border-color: var(--sz-line-strong);
  color: var(--sz-ink);
}
.sz-btn--ghost:hover {
  background: var(--sz-ink);
  border-color: var(--sz-ink);
  color: #fff;
  transform: translateY(-1px);
}
.sz-btn--line {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}
.sz-btn--line:hover {
  background: #fff;
  border-color: #fff;
  color: var(--sz-ink);
}

/* ——— Main board ——— */
.sz-board {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem) 2.5rem;
  display: grid;
  gap: 1rem;
}

/* Waveform status */
.sz-wave-card {
  background: var(--sz-ink);
  color: #fff;
  border-radius: 2px;
  padding: 1.1rem 1.15rem 1.25rem;
  overflow: hidden;
}

.sz-wave-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}
.sz-wave-head h3 {
  margin: 0;
  font-family: var(--font-sz-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sz-amber);
}

.sz-badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.2rem 0.65rem;
  font-family: var(--font-sz-display);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}
.sz-badge--live {
  background: var(--sz-teal);
  color: var(--sz-ink);
}
.sz-badge--progress {
  background: var(--sz-amber);
  color: var(--sz-ink);
}
.sz-badge--miss {
  background: var(--sz-miss);
  color: #fff;
}
.sz-badge--idle {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.65);
}

.sz-wave {
  position: relative;
  padding-top: 0.5rem;
}
.sz-wave-track {
  position: absolute;
  left: 0;
  right: 0;
  top: 2.4rem;
  height: 4px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  overflow: hidden;
}
.sz-wave-fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--sz-flare), var(--sz-teal), var(--sz-amber));
  border-radius: 2px;
  transition: width 900ms var(--sz-soft);
}

.sz-wave-peaks {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.sz-peak {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-align: center;
  opacity: 0.45;
  transform: translateY(8px);
  transition: opacity 360ms ease, transform 420ms var(--sz-spring);
}
.sz-peak.is-lit {
  opacity: 1;
  transform: translateY(0);
  transition-delay: var(--sz-delay);
}
.sz-peak-dot {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.28);
  box-shadow: 0 0 0 0 transparent;
  transition: background var(--sz-fast), border-color var(--sz-fast), box-shadow 420ms ease, transform var(--sz-spring);
}
.sz-peak.is-lit .sz-peak-dot {
  background: var(--sz-teal);
  border-color: var(--sz-teal);
}
.sz-peak.is-active .sz-peak-dot {
  background: var(--sz-flare);
  border-color: var(--sz-amber);
  transform: scale(1.15);
  box-shadow: 0 0 0 8px rgba(255, 51, 102, 0.22);
  animation: szPulse 1.4s ease-in-out infinite;
}
@keyframes szPulse {
  0%, 100% { box-shadow: 0 0 0 6px rgba(255, 51, 102, 0.18); }
  50% { box-shadow: 0 0 0 12px rgba(255, 51, 102, 0.08); }
}
.sz-peak strong {
  font-family: var(--font-sz-display);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sz-peak small {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.55);
}

/* Reading card results */
.sz-reading {
  position: relative;
  background: var(--sz-surface);
  border: 1px solid var(--sz-line);
  border-radius: 2px;
  padding: 1.15rem 1.2rem 1.3rem;
  overflow: hidden;
  opacity: 0;
  transform: translateY(12px);
}
.sz-reading.is-reveal {
  animation: szReveal 560ms var(--sz-spring) forwards;
}
body.sz-found .sz-reading {
  border-color: rgba(0, 191, 165, 0.45);
  box-shadow: 0 14px 32px rgba(0, 191, 165, 0.12);
}
body.sz-miss .sz-reading {
  border-color: rgba(229, 57, 53, 0.45);
}
body.sz-miss .sz-reading.is-reveal {
  animation: szShake 560ms var(--sz-spring) forwards;
}
@keyframes szReveal {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes szShake {
  0% { opacity: 0; transform: translateX(-10px); }
  40% { opacity: 1; transform: translateX(8px); }
  70% { transform: translateX(-4px); }
  100% { opacity: 1; transform: translateX(0); }
}

.sz-reading-wash {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
}
body.sz-found .sz-reading-wash {
  background: linear-gradient(135deg, var(--sz-teal), transparent 55%);
}
body.sz-miss .sz-reading-wash {
  background: linear-gradient(135deg, var(--sz-miss), transparent 55%);
}
body.sz-idle .sz-reading-wash {
  background: linear-gradient(135deg, var(--sz-amber), transparent 60%);
}

.sz-reading-body { position: relative; z-index: 1; }
.sz-reading-body h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-sz-display);
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.sz-reading-id {
  margin: 0 0 0.85rem;
  font-family: var(--font-sz-display);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--sz-teal-deep);
}

.sz-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 0 0 1rem;
}
.sz-meta > div {
  padding: 0.7rem 0.75rem;
  background: var(--sz-field);
  border: 1px solid var(--sz-line);
  border-radius: 2px;
  border-top: 3px solid var(--sz-teal);
}
.sz-meta > div:nth-child(2) { border-top-color: var(--sz-flare); }
.sz-meta > div:nth-child(3) { border-top-color: var(--sz-amber); }
.sz-meta dt {
  font-family: var(--font-sz-display);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sz-mute);
  margin-bottom: 0.15rem;
}
.sz-meta dd {
  margin: 0;
  font-weight: 700;
  font-size: 1.05rem;
}

.sz-reading-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sz-plane {
  padding: 0.85rem 0;
}
.sz-plane strong {
  display: block;
  font-family: var(--font-sz-display);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}
.sz-plane p {
  margin: 0 0 0.85rem;
  color: var(--sz-mute);
}
.sz-plane--miss strong { color: var(--sz-miss); }

/* Links + colo */
.sz-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  max-width: 960px;
  margin: 0 auto;
  padding: 0.25rem clamp(1rem, 3vw, 2rem) 1rem;
}
.sz-links a {
  font-family: var(--font-sz-display);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sz-mute);
  transition: color var(--sz-fast);
}
.sz-links a:hover { color: var(--sz-flare); }
.sz-links a:focus-visible {
  outline: 2px solid var(--sz-teal);
  outline-offset: 3px;
}

.sz-colo {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem clamp(1rem, 3vw, 2rem) 1.75rem;
  border-top: 1px dashed var(--sz-line);
  font-family: var(--font-sz-display);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sz-mute);
}

@media (max-width: 720px) {
  .sz-hop-links a:nth-child(n+4) { display: none; }
  .sz-form-row { grid-template-columns: 1fr; }
  .sz-meta { grid-template-columns: 1fr; }
  .sz-wave-peaks { gap: 0.25rem; }
  .sz-peak strong { font-size: 0.68rem; }
  .sz-peak small { display: none; }
  .sz-needle { width: 42px; height: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  .sz-needle.is-live::after,
  .sz-needle.is-tick::after,
  .sz-peak.is-active .sz-peak-dot,
  .sz-reading,
  .sz-wave-fill {
    animation: none !important;
    transition: none !important;
  }
  .sz-reading {
    opacity: 1;
    transform: none;
  }
}