:root {
  color-scheme: light;
  --bg: #f6f7f3;
  --panel: #ffffff;
  --ink: #17201b;
  --muted: #69736d;
  --line: #dfe5dd;
  --accent: #246b55;
  --accent-dark: #174b3b;
  --accent-soft: #e3f1eb;
  --warn: #a65b1f;
  --danger: #a83232;
  --shadow: 0 18px 45px rgba(35, 47, 40, 0.09);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(18px, 4vw, 48px) 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(14px);
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1;
}

h2 {
  font-size: 22px;
}

p {
  color: var(--muted);
  margin: 8px 0 0;
}

main {
  width: min(1120px, calc(100% - 32px));
  margin: 28px auto 56px;
}

.tabs {
  display: flex;
  gap: 8px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f0f3ee;
}

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

button {
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.tab {
  min-height: 38px;
  padding: 0 16px;
  background: transparent;
  color: var(--muted);
}

.tab.active {
  background: var(--panel);
  color: var(--accent-dark);
  box-shadow: 0 4px 14px rgba(21, 39, 30, 0.08);
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(18px, 3vw, 30px);
  box-shadow: var(--shadow);
}

.public-info {
  margin-bottom: 24px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--accent-soft);
}

.public-info h2 {
  margin: 0 0 8px;
  color: var(--accent-dark);
}

.public-info p {
  margin: 8px 0;
}

.narrow {
  max-width: 460px;
  margin: 0 auto;
}

.section-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.badge.on-time {
  background: #e3f1eb;
  color: var(--accent-dark);
}

.badge.grace {
  background: #edf3ff;
  color: #28518f;
}

.badge.slightly-late {
  background: #fff7df;
  color: var(--warn);
}

.badge.late {
  background: #fff1f1;
  color: var(--danger);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.stack {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  color: #344139;
  font-size: 14px;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
  color: var(--ink);
  padding: 12px 13px;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(36, 107, 85, 0.14);
}

.time-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
}

.auto-recorded-time:disabled {
  appearance: none;
  -webkit-appearance: none;
  opacity: 1;
  cursor: default;
  background: #edf0ec;
  color: #536056;
}

.input-with-button {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.help-line a {
  color: var(--accent-dark);
  font-weight: 800;
}

.span-2 {
  grid-column: span 2;
}

.primary {
  background: var(--accent);
  color: #fff;
  padding: 0 18px;
}

.primary:hover {
  background: var(--accent-dark);
}

.secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 0 16px;
}

a.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}

.secondary.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.summary-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.location-map {
  margin-top: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
}

.location-map p { padding: 8px 12px; margin: 0; font-size: 13px; }

.location-map iframe {
  display: block;
  width: 100%;
  min-height: 280px;
  border: 0;
}

.location-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
}

.location-row span { color: var(--muted); }

.small-button { min-height: 32px; padding: 0 10px; font-size: 13px; }

.address-suggestions {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fffaf0;
}

.address-suggestions strong { font-size: 14px; color: var(--warn); }
.address-suggestions button { min-height: 38px; text-align: left; font-weight: 600; }

.admin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 20px;
}

.hidden {
  display: none !important;
}

.compact-head {
  margin-bottom: 12px;
}

.segmented {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.setup-card {
  display: grid;
  gap: 18px;
  margin-top: 26px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.setup-toggle {
  width: 100%;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid var(--line);
  background: #fbfcfa;
  color: var(--ink);
  padding: 16px 18px;
  text-align: left;
}

.setup-toggle h2 {
  font-size: 20px;
}

.setup-toggle span {
  white-space: nowrap;
  color: var(--accent-dark);
}

.setup-body {
  display: grid;
  gap: 18px;
}

.setup-card.collapsed .setup-body {
  display: none;
}

.local-gemini-card {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
  padding: 16px;
}

.warning-line {
  border: 1px solid #ecd0a6;
  border-radius: 8px;
  background: #fff8e8;
  color: #7d4c13;
  padding: 12px 14px;
  font-weight: 800;
  line-height: 1.5;
}

.guide-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
  padding: 14px;
}

.inline-guide {
  margin-top: 4px;
  background: #fff;
}

.guide-card summary {
  cursor: pointer;
  color: var(--accent-dark);
  font-weight: 900;
}

.setup-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 28px;
  color: var(--muted);
  line-height: 1.65;
}

.setup-steps li::marker {
  color: var(--accent);
  font-weight: 900;
}

.code-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #111a16;
  overflow: hidden;
}

.code-card button {
  position: absolute;
  top: 12px;
  right: 12px;
}

.code-card pre {
  margin: 0;
  max-height: 360px;
  overflow: auto;
  padding: 18px;
  padding-top: 68px;
  color: #8ff0bf;
  font: 13px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}

.inline-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  margin: 18px 0;
}

.user-list,
.submission-list {
  display: grid;
  gap: 10px;
}

.status-line {
  min-height: 22px;
  margin: 0 0 14px;
  font-weight: 700;
}

.status-line[data-type="success"] {
  color: var(--accent-dark);
}

.status-line[data-type="error"] {
  color: var(--danger);
}

.user-row,
.submission-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  background: #fbfcfa;
}

.submission-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.user-row strong,
.submission-row strong {
  display: block;
}

.danger {
  background: #fff1f1;
  color: var(--danger);
  border: 1px solid #f0c4c4;
  padding: 0 12px;
}

.summary-box {
  margin-top: 22px;
  min-height: 180px;
  line-height: 1.75;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
  padding: 18px;
}

.summary-box h3,
.arrival-head h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

.summary-box pre {
  margin: 0;
  white-space: pre-wrap;
  font: inherit;
}

.original-box {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.original-box h4 {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--muted);
}

.original-record {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 12px;
}

.original-record + .original-record {
  margin-top: 10px;
}

.original-record span {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
}

.admin-card,
.arrival-card {
  display: grid;
  gap: 12px;
  margin: 0 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
  padding: 16px;
}

.inline-form.compact {
  margin: 0;
}

.arrival-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.attendance-times {
  display: grid;
  gap: 8px;
  font-size: 18px;
  line-height: 1.5;
}

.attendance-row {
  display: grid;
  grid-template-columns: 58px 110px minmax(80px, 1fr) minmax(80px, 1fr);
  gap: 8px;
  align-items: center;
}

.attendance-row.dragging {
  opacity: 0.45;
}

.attendance-row.drag-over {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.drag-handle {
  min-height: 36px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  padding: 0 8px;
  cursor: grab;
  font-size: 13px;
}

.drag-handle:active {
  cursor: grabbing;
}

.attendance-row strong {
  font-weight: 800;
}

.attendance-row span {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 8px 10px;
  font-variant-numeric: tabular-nums;
}

.summary-variant {
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 14px;
}

.summary-variant + .summary-variant {
  margin-top: 14px;
}

.summary-variant.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(36, 107, 85, 0.1);
}

.summary-variant-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.summary-variant h3 {
  margin: 0;
  font-size: 15px;
}

.summary-variant pre {
  margin: 0;
  white-space: pre-wrap;
  font: inherit;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  max-width: min(420px, calc(100vw - 36px));
  padding: 12px 14px;
  border-radius: 8px;
  background: #17201b;
  color: #fff;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
  pointer-events: none;
  z-index: 20;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 760px) {
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .tabs {
    width: 100%;
  }

  .tab {
    flex: 1;
    padding: 0 8px;
  }

  .form-grid,
  .admin-grid,
  .inline-form,
  .input-with-button {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: auto;
  }

  .section-head,
  .user-row,
  .submission-row {
    align-items: stretch;
    flex-direction: column;
  }

  .submission-badges {
    justify-content: flex-start;
  }

  .summary-actions {
    justify-content: stretch;
  }

  .summary-actions button {
    flex: 1;
  }

  .arrival-head {
    align-items: stretch;
    flex-direction: column;
  }

  .setup-toggle {
    align-items: stretch;
    flex-direction: column;
  }

  .attendance-row {
    grid-template-columns: 1fr 1fr;
  }

  .drag-handle {
    grid-column: span 2;
  }

  .attendance-row strong {
    grid-column: span 2;
  }
}