/* ============================================================
   RealtimeBiker — Biker Page (Mobile-Optimized, MD3)
   ============================================================ */

.biker-app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 16px;
}

.biker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--md-outline-variant);
}

.biker-header__title {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--md-on-surface);
}

.biker-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px 0;
}

/* MD3 Outlined text field */
.name-group { display: flex; flex-direction: column; gap: 6px; }

.name-input {
  width: 100%;
  padding: 14px 16px;
  background: transparent;
  border: 1px solid var(--md-outline);
  border-radius: var(--md-shape-xs);
  color: var(--md-on-surface);
  font-size: 1rem;
  transition: border-color var(--md-motion-duration-short) var(--md-motion-easing-standard);
}
.name-input::placeholder { color: var(--md-on-surface-variant); }
.name-input:focus { border-color: var(--md-primary); border-width: 2px; padding: 13px 15px; }
.name-input:disabled { opacity: 0.38; cursor: not-allowed; }

/* Ride timer */
.ride-status { text-align: center; padding: 24px 16px; }
.ride-timer {
  font-family: var(--md-font-mono);
  font-size: 3rem;
  font-weight: 500;
  color: var(--md-on-surface);
  letter-spacing: 2px;
  line-height: 1.1;
}
.ride-status-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--md-on-surface-variant);
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.ride-status-label.active { color: var(--md-primary); }
.ride-status-label.paused { color: var(--md-warning); }
.ride-status-label.crashed { color: var(--md-error); }

/* Speed control */
.speed-control { padding: 16px 20px; }
.speed-display {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  margin-bottom: 14px;
}
.speed-value {
  font-family: var(--md-font-mono);
  font-size: 2.8rem;
  font-weight: 500;
  color: var(--md-on-surface);
  line-height: 1;
}
.speed-unit { font-size: 0.85rem; font-weight: 500; color: var(--md-on-surface-variant); }

/* MD3 slider */
.speed-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--md-surface-container-highest);
  border-radius: 2px;
  outline: none;
  margin: 10px 0;
}
.speed-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--md-primary);
  cursor: pointer;
  box-shadow: var(--md-elevation-1);
  transition: transform var(--md-motion-duration-short) var(--md-motion-easing-standard);
}
.speed-slider::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--md-primary);
  cursor: pointer;
  border: none;
}
.speed-slider:active::-webkit-slider-thumb { transform: scale(1.2); }
.speed-slider:disabled { opacity: 0.38; cursor: not-allowed; }
.speed-slider:disabled::-webkit-slider-thumb { cursor: not-allowed; background: var(--md-on-surface); opacity: 0.38; }
.speed-range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--md-on-surface-variant);
  margin-top: 4px;
}

/* Action buttons */
.action-buttons { display: flex; flex-direction: column; gap: 10px; margin-top: auto; padding-bottom: 16px; }
.action-row { display: flex; gap: 10px; }
.action-row > * { flex: 1; }

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--md-shape-full);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1px;
  transition: all var(--md-motion-duration-medium) var(--md-motion-easing-standard);
  min-height: 52px;
  position: relative;
  overflow: hidden;
}
.btn:disabled { opacity: 0.38; cursor: not-allowed; }
.btn:not(:disabled):active { transform: scale(0.97); }
.btn .material-symbols-outlined { font-size: 20px; }

/* MD3 Filled */
.btn--start { background: var(--md-primary); color: var(--md-on-primary); }
.btn--start:not(:disabled):hover { box-shadow: var(--md-elevation-1); }

/* MD3 Tonal */
.btn--pause { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.btn--pause:not(:disabled):hover { box-shadow: var(--md-elevation-1); }

.btn--finish { background: var(--md-success-container); color: var(--md-on-success-container); }
.btn--finish:not(:disabled):hover { box-shadow: var(--md-elevation-1); }

/* Crash button — MD3 error tonal */
.btn--crash {
  background: var(--md-error-container);
  color: var(--md-on-error-container);
  min-height: 56px;
  text-transform: uppercase;
  letter-spacing: 0.1px;
  margin-top: 4px;
}
.btn--crash:not(:disabled):hover { box-shadow: var(--md-elevation-2); }

/* I'm Okay button */
.btn--okay {
  background: var(--md-success-container);
  color: var(--md-on-success-container);
  min-height: 56px;
  text-transform: uppercase;
  letter-spacing: 0.1px;
  margin-top: 4px;
  animation: btn-okay-pulse 2s ease infinite;
}
@keyframes btn-okay-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(125, 208, 121, 0.3); }
  50% { box-shadow: 0 0 0 8px rgba(125, 208, 121, 0); }
}

/* Crash banner */
.crash-banner {
  display: none;
  background: var(--md-error-container);
  color: var(--md-on-error-container);
  padding: 14px 16px;
  border-radius: var(--md-shape-md);
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
}
.crash-banner.visible {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* Ride summary */
.ride-summary { display: none; text-align: center; padding: 24px 16px; }
.ride-summary.visible { display: block; }
.ride-summary__title { font-size: 1.1rem; font-weight: 500; color: var(--md-success); margin-bottom: 8px; }
.ride-summary__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px; }
.ride-summary__stat { padding: 12px; background: var(--md-surface-container-high); border-radius: var(--md-shape-sm); }
.ride-summary__stat-value { font-family: var(--md-font-mono); font-size: 1.2rem; font-weight: 500; }
.ride-summary__stat-label { font-size: 0.68rem; color: var(--md-on-surface-variant); text-transform: uppercase; letter-spacing: 0.5px; margin-top: 2px; }

@keyframes pulse-danger {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 180, 171, 0.35); }
  50% { box-shadow: 0 0 0 8px rgba(255, 180, 171, 0); }
}
.btn--crash.pulse { animation: pulse-danger 2s ease infinite; }