:root {
  --bg: #fbf9f6;
  --card: #ffffff;
  --border: #e8e4df;

  --text: #2f2a25;
  --muted: #6f6a63;

  --primary: #2f5d46;
  --primary-hover: #264c3a;
}

/* Reset */
* {
  box-sizing: border-box;
}

body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  margin: 0;
  padding: 32px;
  min-height: 100vh;
  color: var(--text);

  background:
    radial-gradient(circle at top left, #f3efe9 0%, transparent 45%),
    radial-gradient(circle at bottom right, #eef4f1 0%, transparent 45%),
    var(--bg);
}

/* App shell */
.app-shell {
  max-width: 1200px;
  margin: 0 auto;
}

/* Header */
.app-header {
  margin-bottom: 28px;
}

h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 600;
  font-family: "Playfair Display", serif;
  letter-spacing: -0.02em;
}

.subtitle {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

/* Layout */
.container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

/* Panels */
.panel {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  padding: 22px;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow:
    0 12px 30px rgba(0, 0, 0, 0.05),
    0 4px 12px rgba(0, 0, 0, 0.04);
}

/* Search */
.search-box {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}

input {
  flex: 1;
  padding: 12px 14px;
  font-size: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
}

input:focus {
  outline: none;
  border-color: var(--primary);
}

/* Buttons */
button {
  padding: 10px 16px;
  font-size: 14px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 500;
}

button.primary {
  background: var(--primary);
  color: white;
  border: none;
}

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

button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Results */
.book-card {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.book-card:last-child {
  border-bottom: none;
}

.book-title {
  font-weight: 500;
  font-size: 15px;
}

.book-author {
  font-size: 13px;
  color: var(--muted);
  margin: 4px 0 8px;
}

/* Catalog */
.muted {
  font-size: 13px;
  color: var(--muted);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
}

th {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

td {
  font-size: 13px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.right {
  text-align: right;
}

.footer {
  margin-top: 18px;
  text-align: right;
}