:root {
  --bg: #f4efe7;
  --panel: rgba(255, 252, 247, 0.92);
  --panel-strong: #fffaf2;
  --ink: #1f2a21;
  --muted: #5e6a60;
  --line: rgba(31, 42, 33, 0.12);
  --accent: #1f6b52;
  --accent-2: #b5653d;
  --danger: #a12f29;
  --shadow: 0 18px 48px rgba(58, 43, 29, 0.12);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(181, 101, 61, 0.18), transparent 32%),
    radial-gradient(circle at top right, rgba(31, 107, 82, 0.14), transparent 26%),
    linear-gradient(180deg, #f8f3ea 0%, #efe7db 100%);
  min-height: 100vh;
}

.page {
  width: calc(100% - 48px);
  margin: 24px;
  margin-bottom: 48px;
}

.hero {
  padding: 28px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(255, 250, 242, 0.95), rgba(244, 239, 231, 0.9));
  border: 1px solid rgba(31, 42, 33, 0.08);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  white-space: nowrap;
}

.hero p {
  max-width: none;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  backdrop-filter: blur(10px);
}

.preview-card {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}

.stack {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--muted);
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(31, 42, 33, 0.14);
  background: var(--panel-strong);
  border-radius: 14px;
  padding: 12px 14px;
  color: var(--ink);
  outline: none;
  transition: border-color 140ms ease, transform 140ms ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(31, 107, 82, 0.55);
  transform: translateY(-1px);
}

button {
  border: 0;
  border-radius: 999px;
  padding: 13px 18px;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #2a8d6b);
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 140ms ease, box-shadow 140ms ease, opacity 140ms ease;
  box-shadow: 0 14px 28px rgba(31, 107, 82, 0.22);
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.secondary {
  color: #fff;
  background: linear-gradient(135deg, #185540, #1f6b52);
  box-shadow: 0 14px 28px rgba(31, 107, 82, 0.28);
}

.secondary:disabled {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #2a8d6b);
  box-shadow: none;
}

.meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.stat {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 250, 242, 0.88);
  border: 1px solid rgba(31, 42, 33, 0.08);
}

.stat strong {
  display: block;
  font-size: 1.35rem;
  margin-bottom: 4px;
}

.stat span {
  color: var(--muted);
  font-size: 0.88rem;
}

.message {
  margin: 0;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(31, 107, 82, 0.08);
  color: var(--ink);
  white-space: pre-wrap;
}

.message.error {
  background: rgba(161, 47, 41, 0.1);
  color: var(--danger);
}

.message.warn {
  background: rgba(181, 101, 61, 0.12);
}

.table-wrap {
  overflow: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 252, 247, 0.8);
}

.preview-card .table-wrap {
  flex: 1;
  min-height: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 820px;
}

th,
td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(31, 42, 33, 0.08);
  vertical-align: top;
  font-size: 0.93rem;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  background: #f6efe5;
  z-index: 1;
  font-size: 0.83rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 18px;
}

.download {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.helper {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  background: rgba(31, 42, 33, 0.05);
  border-radius: 999px;
  padding: 8px 12px;
}

@media (max-width: 960px) {
  .grid,
  .split,
  .meta {
    grid-template-columns: 1fr;
  }

  .page {
    width: calc(100% - 24px);
    margin: 12px;
    margin-bottom: 32px;
  }
}