/* ── VARIABLES ── */
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;600;700&family=Share+Tech+Mono&display=swap');
:root {
  --bg:          #1C1C1E;
  --bg-card:     #252528;
  --bg-deep:     #141416;
  --text:        #F2F2F7;
  --text-dim:    #636366;
  --divider:     rgba(255,255,255,0.07);

  --ahead:       #30D158;
  --ahead-glow:  rgba(48,209,88,0.35);
  --ahead-soft:  rgba(48,209,88,0.08);

  --behind:      #FF9F0A;
  --behind-glow: rgba(255,159,10,0.35);
  --behind-soft: rgba(255,159,10,0.08);

  --locked:      #00E5FF;
  --locked-glow: rgba(0,229,255,0.4);
  --locked-soft: rgba(0,229,255,0.07);

  --danger:      #FF453A;
}

/* ── RESET ── */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Rajdhani', sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* Grid texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.011) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.011) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 0;
}

/* ── SCREENS ── */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.screen.active {
  opacity: 1;
  pointer-events: all;
}

/* ── SCREEN HEADER ── */
.screen-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 52px 24px 16px;
  border-bottom: 1px solid var(--divider);
}

.screen-title {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.btn-back {
  background: none;
  border: none;
  color: var(--text);
  font-size: 22px;
  cursor: pointer;
  padding: 4px 8px 4px 0;
  line-height: 1;
}

.screen-body {
  flex: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ── HOME SCREEN ── */
.home-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 32px;
  gap: 16px;
  text-align: center;
}

.wordmark {
  font-weight: 700;
  font-size: 42px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text);
}

.tagline {
  font-size: 14px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

.home-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 320px;
}

/* ── BUTTONS ── */
.btn {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: none;
  border-radius: 6px;
  padding: 16px 20px;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  width: 100%;
}

.btn:active {
  opacity: 0.75;
  transform: scale(0.98);
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--divider);
  color: var(--text-dim);
}

.btn-pause {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  color: var(--text);
  border-radius: 6px;
  padding: 14px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-stop {
  background: rgba(255,69,58,0.12);
  border: 1px solid rgba(255,69,58,0.28);
  color: var(--danger);
  border-radius: 6px;
  padding: 14px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.15s;
}

/* ── FILE DROP ── */
.file-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 2px dashed var(--divider);
  border-radius: 8px;
  padding: 40px 20px;
  cursor: pointer;
  transition: border-color 0.2s;
}

.file-drop:hover {
  border-color: rgba(255,255,255,0.2);
}

.file-drop-icon {
  font-size: 36px;
  color: var(--text-dim);
  line-height: 1;
}

.file-drop-label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* ── INSTRUCTIONS ── */
.instructions {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ── ERROR / RESULT ── */
.error-msg {
  background: rgba(255,69,58,0.12);
  border: 1px solid rgba(255,69,58,0.3);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--danger);
}

.result-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.result-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.result-value {
  font-family: 'Share Tech Mono', monospace;
  font-size: 20px;
  color: var(--text);
}

/* ── GHOST CARD (preview screen) ── */
.ghost-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── FORM FIELDS ── */
.field-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: block;
  margin-bottom: 6px;
}

.text-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 6px;
  padding: 12px 14px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 16px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.text-input:focus {
  border-color: rgba(255,255,255,0.25);
}

.text-input::placeholder {
  color: var(--text-dim);
}

/* ── RUN SCREEN ── */
.run-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 52px 24px 12px;
}

.wordmark-small {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.ghost-run-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  background: var(--bg-card);
  border: 1px solid var(--divider);
  padding: 4px 10px;
  border-radius: 3px;
}

/* ── STATS ROW ── */
.stats-row {
  display: grid;
  grid-template-columns: 1fr 1px 1fr 1px 1fr;
  padding: 8px 20px 10px;
  border-bottom: 1px solid var(--divider);
}

.stat-divider {
  background: var(--divider);
  margin: 4px 0;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.stat-value {
  font-family: 'Share Tech Mono', monospace;
  font-size: 27px;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ── RUN CENTRE ── */
.run-centre {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 0;
  position: relative;
}

/* ── GAP BLOCK ── */
.gap-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  height: 72px;
  justify-content: center;
  transition: opacity 0.35s;
}

.gap-arrow {
  transition: filter 0.5s, color 0.5s;
}

.gap-distance {
  font-family: 'Share Tech Mono', monospace;
  font-size: 28px;
  letter-spacing: 0.04em;
  line-height: 1;
  transition: color 0.5s, text-shadow 0.5s;
}

.gap-sublabel {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  transition: color 0.5s;
}

/* ── FIGURE ── */
.figure-area {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 190px;
  height: 190px;
  margin: 4px 0;
}

.figure-area::before {
  content: '';
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  transition: background 0.6s, box-shadow 0.6s;
  pointer-events: none;
}

.figure-area.state-behind::before {
  background: radial-gradient(circle, var(--behind-soft) 0%, transparent 68%);
  box-shadow: 0 0 70px 12px rgba(255,159,10,0.1);
}
.figure-area.state-ahead::before {
  background: radial-gradient(circle, var(--ahead-soft) 0%, transparent 68%);
  box-shadow: 0 0 70px 12px rgba(48,209,88,0.09);
}
.figure-area.state-locked::before {
  background: radial-gradient(circle, var(--locked-soft) 0%, transparent 68%);
  box-shadow: 0 0 70px 14px rgba(0,229,255,0.13);
}

svg.runner-fig {
  width: 160px;
  height: 160px;
  overflow: visible;
  transition: filter 0.6s;
  color: var(--text);
}

.figure-area.state-behind  svg.runner-fig {
  color: var(--behind);
  filter: drop-shadow(0 0 7px var(--behind)) drop-shadow(0 0 2px rgba(255,159,10,0.85));
}
.figure-area.state-ahead   svg.runner-fig {
  color: var(--ahead);
  filter: drop-shadow(0 0 7px var(--ahead))  drop-shadow(0 0 2px rgba(48,209,88,0.85));
}
.figure-area.state-locked  svg.runner-fig {
  color: var(--locked);
  filter: drop-shadow(0 0 9px var(--locked)) drop-shadow(0 0 3px rgba(0,229,255,0.95));
}

@keyframes stride {
  0%   { transform: translateY(0)    rotate(0deg);    }
  28%  { transform: translateY(-5px) rotate(0.6deg);  }
  55%  { transform: translateY(0)    rotate(0deg);    }
  78%  { transform: translateY(-2px) rotate(-0.4deg); }
  100% { transform: translateY(0)    rotate(0deg);    }
}

svg.runner-fig {
  animation: stride 0.58s ease-in-out infinite;
}

.pulse-ring {
  position: absolute;
  inset: 24px;
  border-radius: 50%;
  border: 1.5px solid var(--locked);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}

@keyframes pulse-ring {
  0%   { transform: scale(0.9);  opacity: 0.65; }
  50%  { transform: scale(1.12); opacity: 0.15; }
  100% { transform: scale(0.9);  opacity: 0.65; }
}

.figure-area.state-locked .pulse-ring {
  opacity: 1;
  animation: pulse-ring 1.1s ease-in-out infinite;
}

.status-line {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-top: 6px;
  transition: color 0.5s;
  color: var(--text-dim);
}

/* ── COUNTDOWN ── */
.countdown-overlay {
  position: absolute;
  inset: 0;
  background: rgba(20,20,22,0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 10;
}

.countdown-number {
  font-family: 'Share Tech Mono', monospace;
  font-size: 96px;
  color: var(--locked);
  filter: drop-shadow(0 0 20px var(--locked));
  line-height: 1;
  transition: opacity 0.3s;
}

.countdown-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ── RUN BOTTOM ── */
.run-bottom {
  padding: 10px 24px 34px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  border-top: 1px solid var(--divider);
}

.ghost-pace-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 5px;
  padding: 9px 14px;
}

.ghost-pace-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.ghost-pace-value {
  font-family: 'Share Tech Mono', monospace;
  font-size: 17px;
  color: var(--text-dim);
}

.controls-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}

/* ── SUMMARY SCREEN ── */
.summary-result {
  text-align: center;
  padding: 20px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.summary-grid {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 8px;
  overflow: hidden;
}

.summary-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 12px 16px;
  border-bottom: 1px solid var(--divider);
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-row-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: flex;
  align-items: center;
}

.summary-row-you,
.summary-row-ghost {
  font-family: 'Share Tech Mono', monospace;
  font-size: 18px;
  text-align: right;
}

.summary-row-you { color: var(--text); }
.summary-row-ghost { color: var(--text-dim); }

.summary-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── UTILITIES ── */
.share-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.share-row .text-input {
  flex: 1;
}

.share-row .btn {
  width: auto;
  padding: 16px 24px;
  white-space: nowrap;
}

button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.countdown-overlay {
  position: absolute;
  inset: 0;
  background: rgba(28,28,30,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.countdown-number {
  font-family: 'Rajdhani', sans-serif;
  font-size: 120px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stats-row {
  display: flex;
  justify-content: space-around;
  padding: 32px 24px;
  border-bottom: 1px solid var(--border);
}

.stat-block { text-align: center; }

.stat-value {
  font-family: 'Share Tech Mono', monospace;
  font-size: 36px;
  color: var(--text-primary);
}

.stat-label {
  font-family: 'Rajdhani', sans-serif;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  margin-top: 4px;
}

.ghost-ref {
  font-family: 'Share Tech Mono', monospace;
  font-size: 36px;
  color: var(--text-dim);
  text-align: center;
  padding: 16px;
}

.run-controls {
  display: flex;
  gap: 12px;
  padding: 24px;
}

.btn-danger {
  background: #FF3B30;
  color: white;
  border: none;
}

.undo-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: #2C2C2E;
  color: var(--text-primary);
  font-family: 'Rajdhani', sans-serif;
  font-size: 16px;
  letter-spacing: 0.05em;
  padding: 16px 24px;
  text-align: center;
  z-index: 100;
}

.undo-link {
  color: #00E5FF;
  cursor: pointer;
  text-decoration: underline;
  margin-left: 8px;
}

.summary-result {
  font-family: 'Rajdhani', sans-serif;
  font-size: 48px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-align: center;
  padding: 32px 24px 16px;
}

.hidden {
  display: none !important;
}