:root {
  --color-bg: #f7f8fa;
  --color-card: #ffffff;
  --color-border: #e2e5e9;
  --color-primary: #1f6f54;
  --color-primary-hover: #17513e;
  --color-text: #1e2328;
  --color-muted: #6b7280;
  --color-danger: #b3261e;
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

header {
  padding: 2.5rem 1.5rem 1.5rem;
  text-align: center;
}

header h1 {
  margin: 0 0 0.4rem;
  font-size: 1.8rem;
}

.subtitle {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  display: grid;
  gap: 2rem;
}

section.add-entry,
section.entries {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.field {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

input, textarea {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
}

input:focus, textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

button[type="submit"] {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 0.65rem 1.3rem;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

button[type="submit"]:hover {
  background: var(--color-primary-hover);
}

.error {
  color: var(--color-danger);
  font-size: 0.9rem;
  margin-top: 0.6rem;
}

.empty {
  color: var(--color-muted);
  font-style: italic;
}

#entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.entry-card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.entry-main a {
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  word-break: break-word;
}

.entry-main a:hover {
  text-decoration: underline;
}

.entry-desc {
  margin: 0.3rem 0 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.entry-meta {
  margin: 0.3rem 0 0;
  color: var(--color-muted);
  font-size: 0.78rem;
}

.delete-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-danger);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  font-size: 0.85rem;
  white-space: nowrap;
}

.delete-btn:hover {
  background: #fdeceb;
}

footer {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.8rem;
  padding-bottom: 2rem;
}