:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1c2430;
  --accent: #1f6feb;
  --header: #e8eef6;
  --border: #d0d7de;
  --muted: #5b6573;
  --danger: #b42318;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(16, 24, 40, 0.08);
  --col-min: 9rem;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

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

.wrap {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

header.page-header {
  margin-bottom: 1.25rem;
}

header.page-header h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

header.page-header .subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tabs button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 0.65rem 0.9rem;
  cursor: pointer;
  font: inherit;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  flex: 0 0 auto;
}

.tabs button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 0.85rem;
}

.toolbar input[type="search"],
.toolbar input[type="text"],
.toolbar input[type="password"],
.toolbar input[type="email"],
.login-box input,
.form-grid input,
.form-grid textarea {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  font: inherit;
  background: var(--surface);
  color: var(--text);
  min-width: 0;
  width: 100%;
}

.toolbar input[type="search"] {
  flex: 1 1 14rem;
  width: auto;
  min-width: 12rem;
}

.form-grid {
  display: grid;
  gap: 0.85rem;
  width: 100%;
  max-width: 32rem;
  background: var(--surface);
  padding: 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.form-grid label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.form-grid label .optional {
  font-weight: 500;
  color: var(--muted);
}

.form-grid textarea {
  min-height: 8rem;
  resize: vertical;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  touch-action: manipulation;
}

.btn:hover {
  filter: brightness(0.95);
}

.btn.secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn.danger {
  background: var(--danger);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn.icon {
  padding: 0.2rem 0.45rem;
  line-height: 1;
  flex: 0 0 auto;
}

.table-hint {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.table-shell {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  max-width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

table.data {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  table-layout: auto;
}

table.data th,
table.data td {
  border-bottom: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
  min-width: var(--col-min);
}

table.data th {
  background: var(--header);
  position: sticky;
  top: 0;
  z-index: 1;
  white-space: nowrap;
  user-select: none;
}

table.data th.sortable {
  cursor: pointer;
}

table.data th.sortable:hover {
  filter: brightness(0.97);
}

table.data th .sort-mark {
  margin-left: 0.35rem;
  color: var(--accent);
  font-size: 0.85em;
}

table.data tr:last-child td {
  border-bottom: none;
}

table.data th .th-edit {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  min-width: var(--col-min);
}

table.data td input,
table.data th input {
  display: block;
  width: 100%;
  min-width: calc(var(--col-min) - 1.5rem);
  border: 1px solid transparent;
  background: transparent;
  font: inherit;
  color: inherit;
  padding: 0.35rem 0.25rem;
  border-radius: 4px;
}

table.data th input {
  font-weight: 700;
  flex: 1 1 auto;
  min-width: 5.5rem;
}

table.data td input:focus,
table.data th input:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}

.status {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.status.error {
  color: var(--danger);
}

.status.ok {
  color: #067647;
}

.hp {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.login-box {
  width: 100%;
  max-width: 24rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  display: grid;
  gap: 0.85rem;
}

.login-box form {
  display: grid;
  gap: 0.85rem;
}

.login-box label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

.login-box .btn {
  width: 100%;
}

.hidden {
  display: none !important;
}

.col-actions {
  white-space: nowrap;
  width: 1%;
  min-width: 5.5rem;
}

/* Desktop: roomier page and sticky first column optional feel via wider shell */
@media (min-width: 900px) {
  .wrap {
    max-width: 1200px;
    padding: 2rem 1.5rem 3.5rem;
  }

  .table-shell {
    max-height: calc(100vh - 14rem);
  }

  .toolbar .btn {
    flex: 0 0 auto;
  }
}

@media (max-width: 720px) {
  .wrap {
    padding: 1rem 0.75rem 2.5rem;
  }

  .toolbar {
    gap: 0.5rem;
  }

  .toolbar .btn {
    flex: 1 1 calc(50% - 0.5rem);
    text-align: center;
  }

  .toolbar input[type="search"] {
    flex: 1 1 100%;
    min-width: 100%;
    width: 100%;
  }

  .table-shell {
    /* Bleed slightly so swipe scroll feels natural on phones */
    margin-inline: -0.25rem;
    border-radius: 8px;
  }

  table.data th,
  table.data td {
    padding: 0.45rem 0.55rem;
  }

  .form-grid {
    padding: 1rem;
  }

  .col-actions .btn {
    padding: 0.35rem 0.55rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 420px) {
  :root {
    --col-min: 8rem;
  }

  .toolbar .btn {
    flex: 1 1 100%;
  }
}