:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --border: #d8deeb;
  --accent: #1f7aec;
  --text: #1f2933;
  --muted: #5f6b7a;
  --danger: #d64545;
  --table-header: #eef3fc;
  --input-bg: #ffffff;
  --shadow: rgba(0,0,0,0.03);
  --shadow-strong: rgba(0,0,0,0.12);
  --message-warn-bg: #fffaf1;
  --message-warn-border: #f0c040;
  --message-error-bg: #ffecec;
  --message-error-border: #d64545;
  --btn-primary-bg: var(--accent);
  --btn-primary-text: #ffffff;
  --btn-primary-border: var(--accent);
  --btn-secondary-bg: #ffffff;
  --btn-secondary-text: var(--accent);
  --btn-secondary-border: var(--accent);
  --btn-danger-bg: #ffffff;
  --btn-danger-text: var(--danger);
  --btn-danger-border: var(--danger);
}
body.dark {
  --bg: #0f1725;
  --card: #161f31;
  --border: #243047;
  --accent: #5da3ff;
  --text: #e6edf5;
  --muted: #9fb4d3;
  --danger: #ff9b93;
  --table-header: #1f2b3c;
  --input-bg: #0f1725;
  --shadow: rgba(0,0,0,0.35);
  --shadow-strong: rgba(0,0,0,0.55);
  --message-warn-bg: #2b2415;
  --message-warn-border: #d8a43a;
  --message-error-bg: #2f1c1c;
  --message-error-border: #ff9b93;
  --btn-primary-bg: var(--accent);
  --btn-primary-text: #0b1020;
  --btn-primary-border: var(--accent);
  --btn-secondary-bg: var(--card);
  --btn-secondary-text: var(--accent);
  --btn-secondary-border: var(--accent);
  --btn-danger-bg: var(--card);
  --btn-danger-text: var(--danger);
  --btn-danger-border: var(--danger);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  padding: 16px;
  padding-bottom: 96px;
  transition: background-color 0.2s ease, color 0.2s ease;
}
h1 { margin: 0 0 16px; font-size: 24px; }
h2 { margin: 0 0 12px; font-size: 18px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}
.section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 12px;
  box-shadow: 0 4px 10px var(--shadow);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
label { display: block; font-weight: 600; margin-bottom: 6px; }
input, select, button, textarea {
  font: inherit;
}
input, select, textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
textarea { resize: vertical; min-height: 140px; }
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}
th, td {
  border: 1px solid var(--border);
  padding: 8px;
  text-align: left;
  vertical-align: middle;
  background: var(--input-bg);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
th { background: var(--table-header); font-size: 14px; }
.small { width: 80px; }
.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.btn {
  border: 1px solid var(--btn-primary-border);
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  padding: 9px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  text-decoration: none;
  display: inline-block;
}
.btn.secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border-color: var(--btn-secondary-border);
}
.btn.danger {
  border-color: var(--btn-danger-border);
  color: var(--btn-danger-text);
  background: var(--btn-danger-bg);
}
.btn:hover { box-shadow: 0 4px 8px rgba(0,0,0,0.08); }
.btn:active { transform: translateY(1px); }
.inline { display: inline-block; width: auto; }
.muted { color: var(--muted); font-size: 13px; margin-top: 2px; }
#messages { margin-top: 10px; }
.message {
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 14px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.message.warn { border-color: var(--message-warn-border); background: var(--message-warn-bg); }
.message.error { border-color: var(--message-error-border); background: var(--message-error-bg); }
.case-inputs { display: grid; gap: 6px; }
.small-label { font-size: 12px; color: var(--muted); margin: 0; display: block; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.input-right {
  width: 110px;
  margin-left: auto;
  text-align: right;
}
.floating-bar {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 12px;
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 6px 12px var(--shadow-strong);
  padding: 10px 12px;
  z-index: 1000;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.floating-bar .muted { margin: 0; }
.day-toggle-row { gap: 6px; }
.day-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  cursor: pointer;
}
.day-toggle input { width: auto; }
.time-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.time-input { width: 140px; }
.tab-bar {
  display: flex;
  gap: 8px;
  margin: 12px 0;
}
.tab-btn {
  border: 1px solid var(--btn-secondary-border);
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, box-shadow 0.1s ease;
}
.tab-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-border);
  box-shadow: 0 4px 10px var(--shadow);
}
.tab-panels { width: 100%; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}
.download-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  background: var(--input-bg);
  box-shadow: 0 3px 8px var(--shadow);
}
.download-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.download-links a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.download-links a:hover {
  text-decoration: underline;
}
.char-counter {
  display: block;
  text-align: right;
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
}
@media (max-width: 680px) {
  body { padding: 12px; }
  table, th, td { font-size: 13px; }
}