:root {
  --ck-dark: #141c24;
  --ck-gold: #c9a15a;
  --ck-gold-dark: #a9813f;
  --ck-cream: #f7f5f0;
  --ck-green: #33513c;
  --ck-text: #262524;
  --ck-danger: #a3402f;
  --ck-danger-bg: #f7e6e2;
  --ck-ok: #33513c;
  --ck-ok-bg: #e7ede8;
  --ck-border: #e2ddd0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ck-cream);
  color: var(--ck-text);
  font-family: "Lato", sans-serif;
  line-height: 1.5;
}

h1, h2 {
  font-family: "Baskervville", serif;
  font-weight: 400;
  margin: 0;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--ck-dark);
  color: #fff;
  padding: 1.25rem 1.5rem;
}

.site-header h1 {
  font-size: 1.6rem;
  color: #fff;
}

#app {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: #fff;
  border: 1px solid var(--ck-border);
  border-top: 3px solid var(--ck-gold);
  border-radius: 4px;
  padding: 1.5rem;
}

.card h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--ck-green);
  display: inline-block;
}

.error-card {
  border-top-color: var(--ck-danger);
  background: var(--ck-danger-bg);
}

#setup-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.95rem;
}

input[type="date"],
input[type="text"] {
  font-family: "Lato", sans-serif;
  font-size: 1rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--ck-border);
  border-radius: 3px;
  background: var(--ck-cream);
  color: var(--ck-text);
}

input:focus {
  outline: 2px solid var(--ck-gold);
  outline-offset: 1px;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.25rem;
}

.btn {
  font-family: "Lato", sans-serif;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 3px;
  padding: 0.7rem 1.4rem;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn-primary {
  background: var(--ck-dark);
  color: var(--ck-gold);
}

.btn-primary:hover {
  background: #0c1219;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-large {
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
}

.link-btn {
  background: none;
  border: none;
  color: var(--ck-green);
  font-family: "Lato", sans-serif;
  font-size: 0.9rem;
  text-decoration: underline;
  cursor: pointer;
  padding: 0.3rem 0;
}

.site-header .link-btn {
  color: var(--ck-cream);
}

.status-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1rem;
  margin: 0 0 1rem;
}

.status-grid dt {
  font-weight: 700;
  color: var(--ck-green);
}

.status-grid dd {
  margin: 0;
}

#status-next.overdue {
  color: var(--ck-danger);
  font-weight: 700;
}

#status-next.upcoming {
  color: var(--ck-ok);
  font-weight: 700;
}

.hint {
  font-size: 0.9rem;
  color: #6b665c;
}

.error-text {
  font-size: 0.9rem;
  color: var(--ck-danger);
  background: var(--ck-danger-bg);
  padding: 0.5rem 0.75rem;
  border-radius: 3px;
}

#history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

#history-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--ck-cream);
  border-radius: 3px;
}

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  opacity: 0.6;
}

.icon-btn:hover {
  opacity: 1;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #1b1712;
    color: #eae6db;
  }

  .card {
    background: #26221b;
    border-color: #3a352b;
  }

  input[type="date"],
  input[type="text"] {
    background: #1b1712;
    color: #eae6db;
    border-color: #3a352b;
  }

  #history-list li {
    background: #1b1712;
  }

  .hint {
    color: #b4ada0;
  }
}