:root {
  --bg: #f3f7fa;
  --panel: #ffffff;
  --text: #0b2a49;
  --muted: #5c687d;
  --border: #d8e1e8;
  --border-strong: #8ea1b2;
  --accent: #00a38f;
  --accent-dark: #0b2a49;
  --accent-soft: #e6f8f5;
  --danger: #b42318;
  --danger-bg: #fff1f0;
  --success: #007d6e;
  --success-bg: #e6f8f5;
  --warning: #9a6700;
  --warning-bg: #fff8db;
  --shadow: 0 12px 32px rgba(11, 42, 73, 0.10);
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(0, 163, 143, 0.12), transparent 34rem),
    var(--bg);
}

button, input, select { font: inherit; }
button { cursor: pointer; }
button:disabled, input:disabled { cursor: not-allowed; opacity: 0.55; }

.app-shell {
  display: flex;
  flex-direction: column;
  width: min(1480px, calc(100% - 32px));
  min-height: calc(100vh - 48px);
  margin: 24px auto;
}

main { display: flex; flex: 1; flex-direction: column; min-height: 0; }

.app-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 12px;
  padding: 16px 20px;
  color: var(--text);
  background: linear-gradient(135deg, #ffffff, #f4fbfa);
  border: 1px solid rgba(0, 163, 143, 0.22);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.brand-block { display: grid; gap: 8px; min-width: 0; }
.app-logo { display: block; width: min(250px, 70vw); height: auto; }
.app-header p { margin: 0; color: var(--muted); }

.privacy-badge {
  flex: 0 0 auto;
  padding: 8px 12px;
  border: 1px solid rgba(0, 163, 143, 0.28);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
}

.panel {
  margin-bottom: 10px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.panel h2 { margin: 0 0 10px; font-size: 17px; }

.section-title-row, .table-header-row, .toolbar-title-row, .toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.drop-zone {
  display: grid;
  gap: 6px;
  place-items: center;
  min-height: 86px;
  padding: 18px;
  border: 2px dashed var(--border-strong);
  border-radius: 16px;
  background: #fbfffe;
  text-align: center;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.drop-zone:hover, .drop-zone.dragging { border-color: var(--accent); background: var(--accent-soft); transform: translateY(-1px); }
.drop-zone input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.drop-zone-main { font-size: 17px; font-weight: 700; }
.drop-zone-sub { color: var(--muted); word-break: break-all; }

.form-grid { display: grid; grid-template-columns: repeat(4, minmax(150px, 1fr)); gap: 12px; }
.form-grid label, .search-box { display: grid; gap: 6px; }
.form-grid span, .search-box span, .status-label { color: var(--muted); font-size: 13px; font-weight: 700; }

select, input[type="search"] {
  width: 100%; min-height: 40px; padding: 8px 10px; border: 1px solid var(--border);
  border-radius: 12px; background: #ffffff; color: var(--text);
}
select:focus, input[type="search"]:focus { outline: 3px solid rgba(0, 163, 143, 0.18); border-color: var(--accent); }

.checkbox-label { display: flex !important; align-items: center; gap: 8px; min-height: 40px; }
.checkbox-label input { width: 18px; height: 18px; }
.checkbox-label.compact { flex: 0 0 auto; }
.search-box { flex: 1 1 260px; }

.secondary-button, .primary-button {
  min-height: 38px; padding: 8px 14px; border-radius: 12px; font-weight: 750;
}
.secondary-button { border: 1px solid var(--border); background: #ffffff; color: var(--text); }
.secondary-button:not(:disabled):hover { border-color: var(--accent); color: var(--accent); }
.primary-button { border: 1px solid var(--accent); background: var(--accent); color: #ffffff; }
.primary-button:not(:disabled):hover { filter: brightness(0.95); }

.save-state { padding: 5px 10px; border-radius: 999px; font-size: 13px; font-weight: 800; }
.save-state.clean { background: var(--success-bg); color: var(--success); border: 1px solid #b7efc5; }
.save-state.dirty { background: var(--warning-bg); color: var(--warning); border: 1px solid #f1d98a; }

.status-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 10px; }
.status-card { display: grid; gap: 6px; min-width: 0; padding: 12px 14px; background: var(--panel); border: 1px solid var(--border); border-radius: 16px; }
.status-card strong { overflow: hidden; font-size: 17px; text-overflow: ellipsis; white-space: nowrap; }

.message-area { display: grid; gap: 8px; margin-bottom: 10px; }
.message { padding: 10px 12px; border-radius: 14px; border: 1px solid transparent; }
.message.info { background: var(--accent-soft); border-color: #b7e8e1; color: var(--accent-dark); }
.message.success { background: var(--success-bg); border-color: #b7efc5; color: var(--success); }
.message.error { background: var(--danger-bg); border-color: #ffc9c4; color: var(--danger); }

.table-panel { display: flex; flex: 1; flex-direction: column; min-height: 380px; padding: 0; overflow: hidden; }
.table-header-row { flex: 0 0 auto; padding: 12px 14px; border-bottom: 1px solid var(--border); }
.table-header-row h2 { margin: 0; }
.pager { display: flex; align-items: center; gap: 10px; color: var(--muted); font-weight: 700; }
.table-scroll { flex: 1; min-height: 0; overflow: auto; }

.csv-table { width: 100%; min-width: 720px; border-collapse: separate; border-spacing: 0; font-size: 14px; }
.csv-table th, .csv-table td {
  max-width: 360px; padding: 9px 10px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: top;
}
.csv-table.wrap-cells th, .csv-table.wrap-cells td { white-space: normal; overflow-wrap: anywhere; }
.csv-table th { position: sticky; top: 0; z-index: 2; background: #f6fbfa; font-weight: 800; text-align: left; }
.csv-table th.sortable { cursor: pointer; user-select: none; }
.csv-table th.sortable:hover { background: var(--accent-soft); }
.csv-table tr:nth-child(even) td { background: #fbfffe; }
.csv-table .row-number, .csv-table .row-number-header {
  position: sticky; left: 0; z-index: 1; width: 74px; min-width: 74px; max-width: 74px;
  background: #f6fbfa; color: var(--muted); text-align: right; font-variant-numeric: tabular-nums;
}
.csv-table .row-number-header { z-index: 3; }
.empty-table-message { padding: 30px !important; color: var(--muted); text-align: center; }

.csv-table.editing td.editable-cell, .csv-table.editing th.editable-header { cursor: text; background: #fffdf3; }
.csv-table.editing td.editable-cell:focus, .csv-table.editing th.editable-header:focus { outline: 3px solid rgba(0, 163, 143, 0.22); outline-offset: -3px; background: #ffffff; }

body.fullscreen-mode { overflow: hidden; }
body.fullscreen-mode .app-shell { width: 100%; height: 100vh; min-height: 100vh; margin: 0; padding: 8px; }
body.fullscreen-mode .app-header, body.fullscreen-mode .hide-in-fullscreen { display: none; }
body.fullscreen-mode .toolbar-panel { flex: 0 0 auto; margin-bottom: 8px; border-radius: 14px; }
body.fullscreen-mode .message-area { flex: 0 0 auto; margin-bottom: 8px; }
body.fullscreen-mode .table-panel { flex: 1 1 auto; min-height: 0; border-radius: 14px; }
body.fullscreen-mode .table-scroll { height: auto; }
body.fullscreen-mode .toolbar { flex-wrap: wrap; }

@media (max-width: 900px) {
  .app-shell { width: min(100% - 20px, 1480px); margin-top: 10px; min-height: calc(100vh - 20px); }
  .app-header, .section-title-row, .table-header-row, .toolbar-title-row, .toolbar { align-items: stretch; flex-direction: column; }
  .form-grid, .status-grid { grid-template-columns: 1fr 1fr; }
  .privacy-badge { width: fit-content; }
  .search-box { flex-basis: auto; }
}

@media (max-width: 560px) {
  .form-grid, .status-grid { grid-template-columns: 1fr; }
  .panel, .app-header { border-radius: 14px; padding: 14px; }
  .table-header-row { padding: 14px; }
  .pager { justify-content: space-between; }
}