:root {
  --paper: #e6cd7a;
  --paper-raised: #f2ecd9;
  --ink: #23281f;
  --moss: #6bc931;
  --ochre: #b8791f;
  --rust: #8c3b2e;
  --rule: #4822b82e;

  --font-display: "Fraunces", serif;
  --font-body: "IBM Plex Mono", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: var(--paper);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 31px,
    var(--rule) 32px
  );
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

.page__header {
  margin-bottom: 40px;
}

.title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 4px;
}

.subtitle {
  margin: 0;
  color: var(--moss);
}

.panel {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--rule);
}

.panel:last-of-type {
  border-bottom: none;
}

.section-heading {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0 0 16px;
}

.panel__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.tip-text {
  margin: 0;
  flex: 1 1 260px;
}

.field-row {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 220px;
}

.field--narrow {
  flex: 0 1 140px;
}

.field__label {
  font-size: 0.85rem;
  color: var(--moss);
}

input[type="text"] {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 10px 12px;
  background-color: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
}

input[type="text"]::placeholder {
  color: rgba(35, 40, 31, 0.4);
}

input[type="text"]:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 2px;
}

.meter {
  height: 6px;
  background-color: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}

.meter__fill {
  height: 100%;
  width: 0%;
  background-color: var(--moss);
  transition: width 0.15s ease, background-color 0.15s ease;
}

.meter__caption {
  margin: 0 0 20px;
  font-size: 0.8rem;
  color: var(--moss);
}

.btn {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 10px 18px;
  border-radius: 2px;
  cursor: pointer;
}

.btn--primary {
  background-color: var(--ochre);
  color: var(--paper);
  border: 1px solid var(--ochre);
}

.btn--primary:hover {
  background-color: #a1690f;
}

.btn--ghost {
  background: none;
  border: none;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 4px 0;
}

.btn--ghost:hover {
  color: var(--ochre);
}

.sighting-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sighting-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dotted var(--rule);
}

.sighting-item:first-child {
  border-top: 1px dotted var(--rule);
}

.sighting-item__text {
  flex: 1;
}

.sighting-item__species {
  font-weight: 500;
}

.sighting-item__time {
  color: var(--moss);
  margin-left: 8px;
}

.remove-button {
  background: none;
  border: none;
  color: var(--rust);
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  padding: 4px 0;
}

.remove-button:hover {
  color: #6e2e23;
}

.empty-message {
  color: var(--moss);
  font-style: italic;
  margin: 8px 0 0;
}

.empty-message.is-hidden {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .meter__fill {
    transition: none;
  }
}