:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --card-bg: #1e293b;
  --row-bg: #16213a;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --danger: #f87171;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.screen {
  padding: 24px;
  max-width: 860px;
  margin: 0 auto;
}

.login-card {
  max-width: 320px;
  margin: 15vh auto 0;
  background: var(--card-bg);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.login-card h1 {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.login-card label {
  font-size: 0.85rem;
  color: var(--muted);
}

input, button {
  font: inherit;
}

input[type="text"], input[type="number"], input[type="password"], input[type="search"] {
  background: #0b1223;
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
}

button {
  background: var(--accent);
  color: #0b1223;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
}

.link-btn {
  background: none;
  color: var(--muted);
  font-weight: 400;
  text-decoration: underline;
  padding: 0;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 12px;
}

.toolbar input {
  flex: 1;
}

#total-count {
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}

th {
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tbody tr:hover {
  background: var(--row-bg);
}

td[contenteditable="true"] {
  cursor: text;
}

td[contenteditable="true"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.danger-btn {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 6px 12px;
  font-size: 0.85rem;
}

.add-form {
  margin-top: 24px;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.add-form h2 {
  width: 100%;
  font-size: 1rem;
  color: var(--muted);
  margin: 0 0 4px;
}

.add-form input {
  flex: 1;
  min-width: 140px;
}

.hint {
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 16px;
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
}