:root {
  --bg-1: #f4f8f2;
  --bg-2: #d7efe0;
  --ink: #122117;
  --muted: #456451;
  --line: #c7dbc9;
  --card: #fbfffc;
  --primary: #136f3d;
  --primary-hover: #0d5d32;
  --danger: #a63f2d;
  --danger-hover: #8a321f;
  --accent: #e78b24;
  --accent-hover: #ca7417;
  --shadow: 0 16px 36px rgba(18, 33, 23, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 18%, rgba(86, 190, 122, 0.35), transparent 32%),
    radial-gradient(circle at 88% 15%, rgba(231, 139, 36, 0.24), transparent 28%),
    linear-gradient(145deg, var(--bg-1), var(--bg-2));
}

.app {
  width: min(980px, 92vw);
  margin: 40px auto;
}

.app-header h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
}

.app-header p {
  margin: 10px 0 22px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid rgba(19, 111, 61, 0.22);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 660px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 10px;
  text-align: left;
}

th {
  background: #e9f6ec;
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.02em;
}

td:first-child,
td:last-child {
  width: 140px;
  font-weight: 600;
}

.cell-input {
  width: 100%;
  border: 1px solid #acc9b1;
  border-radius: 8px;
  font-size: 0.95rem;
  padding: 8px 10px;
  color: var(--ink);
  background: #ffffff;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.cell-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(19, 111, 61, 0.15);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

button {
  border: 0;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 10px 16px;
  background: var(--primary);
  transition: transform 0.16s ease, background-color 0.16s ease;
}

button:hover {
  transform: translateY(-1px);
  background: var(--primary-hover);
}

button:disabled {
  cursor: not-allowed;
  background: #8ca49a;
  transform: none;
}

button.ghost {
  background: var(--danger);
}

button.ghost:hover {
  background: var(--danger-hover);
}

button.accent {
  background: var(--accent);
}

button.accent:hover {
  background: var(--accent-hover);
}

.status {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.status.success {
  color: #0a6d3b;
  font-weight: 600;
}

.status.error {
  color: #a12b1d;
  font-weight: 600;
}

@media (max-width: 760px) {
  .app {
    width: min(100%, 95vw);
    margin: 18px auto;
  }

  .card {
    padding: 14px;
    border-radius: 14px;
  }

  .actions {
    gap: 10px;
  }

  button {
    flex: 1 1 100%;
  }
}