:root {
  --bg: #18201c;
  --panel: #f4ecd8;
  --panel-deep: #e1d0aa;
  --ink: #1f241f;
  --muted: #6c6759;
  --accent: #9e4d2f;
  --accent-strong: #73331f;
  --line: rgba(31, 36, 31, 0.2);
  --danger: #b6332b;
  --success: #2f7a52;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 0%, rgba(197, 142, 72, 0.28), transparent 34rem),
    linear-gradient(135deg, #101713 0%, var(--bg) 48%, #2a201a 100%);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
}

a {
  color: var(--accent-strong);
}

.tool-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  min-height: 100vh;
}

.tool-nav {
  position: sticky;
  top: 0;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 100vh;
  padding: 28px 18px;
  background: rgba(6, 10, 8, 0.52);
  border-right: 1px solid rgba(244, 236, 216, 0.16);
}

.tool-nav a {
  padding: 12px 14px;
  color: #f5ead1;
  text-decoration: none;
  border: 1px solid rgba(245, 234, 209, 0.18);
  background: rgba(245, 234, 209, 0.08);
}

.tool-nav a.is-current,
.tool-nav a:hover {
  color: #23170f;
  background: #f5ead1;
}

.tool-main {
  width: min(1480px, 100%);
  padding: 34px;
}

.tool-page-header {
  margin-bottom: 22px;
  color: #f8efd8;
}

.tool-kicker {
  margin: 0 0 6px;
  color: rgba(248, 239, 216, 0.72);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(420px, 0.95fr) minmax(520px, 1.2fr);
  gap: 22px;
  align-items: start;
}

.tool-card {
  padding: 22px;
  background: var(--panel);
  border: 4px solid #38291c;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

.tool-card h2 {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.tool-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.tool-table th,
.tool-table td {
  padding: 9px 8px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.tool-table th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.tool-form {
  display: grid;
  gap: 14px;
}

.tool-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.tool-form input,
.tool-form select {
  width: 100%;
  min-height: 42px;
  padding: 9px 10px;
  color: var(--ink);
  font: inherit;
  background: #fffaf0;
  border: 1px solid rgba(31, 36, 31, 0.34);
}

.tool-form input[readonly] {
  color: var(--muted);
  background: var(--panel-deep);
}

.tool-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.tool-inline {
  display: flex;
  gap: 16px;
  align-items: center;
}

.tool-check {
  display: flex !important;
  grid-template-columns: auto;
  gap: 8px !important;
  align-items: center;
  color: var(--ink) !important;
}

.tool-check input {
  width: auto;
  min-height: auto;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.tool-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 18px;
  color: #fff8e7;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  background: var(--accent);
  border: 2px solid var(--accent-strong);
}

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

.tool-button-sub {
  color: var(--ink);
  background: var(--panel-deep);
  border-color: rgba(31, 36, 31, 0.34);
}

.tool-flash {
  margin: 0 0 18px;
  padding: 13px 16px;
  color: white;
  background: var(--success);
  border: 2px solid rgba(0, 0, 0, 0.24);
}

.tool-flash-error {
  background: var(--danger);
}

@media (max-width: 1000px) {
  .tool-shell {
    grid-template-columns: 1fr;
  }

  .tool-nav {
    position: static;
    flex-direction: row;
    min-height: auto;
    overflow-x: auto;
  }

  .tool-main {
    padding: 22px;
  }

  .tool-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .tool-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}