:root {
  --bg: #0b1220;
  --panel: #121b2e;
  --panel-2: #17233a;
  --border: #253453;
  --text: #eaf0ff;
  --text-dim: #9fb0d0;
  --accent: #ff6a3d;
  --accent-2: #2dd4bf;
  --open: #17233a;
  --open-hover: #1e2d4a;
  --taken: #24314d;
  --locked: #1a1a22;
  --danger: #e5484d;
  --success: #2dd4bf;
  --mine: #60a5fa;
  --selected: #ff6a3d;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top, #16213a 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  padding-bottom: env(safe-area-inset-bottom);
}

.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.hero {
  text-align: center;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 1.9rem;
  margin: 0 0 6px;
  letter-spacing: 0.5px;
}

.hero p {
  color: var(--text-dim);
  margin: 4px 0;
  font-size: 0.95rem;
}

.status-banner {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 14px 0;
}

.pill {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

.pill strong { color: var(--text); }

.pill.warn { border-color: var(--accent); color: var(--accent); }
.pill.win { border-color: var(--success); color: var(--success); }

.legend {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin: 18px 0 10px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.legend span { display: inline-flex; align-items: center; gap: 6px; }

.period-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 4px 0 16px;
}

.period-tab {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 999px;
  padding: 8px 18px;
  font-weight: 700;
  font-size: 0.85rem;
}

.period-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a0d05;
}

.selection-bar {
  position: sticky;
  top: 8px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--selected);
  border-radius: 10px;
  padding: 10px 14px;
  margin: 0 0 14px;
  font-size: 0.85rem;
}

.swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  display: inline-block;
}

.swatch.open { background: var(--open); border: 1px solid var(--border); }
.swatch.unpaid { background: var(--taken); border: 2px solid var(--danger); }
.swatch.paid { background: var(--taken); border: 2px solid var(--success); }
.swatch.mine { background: var(--taken); border: 2px dashed var(--mine); }

.pool-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 0 0 28px;
}

.category-heading {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin: 28px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.category-heading:first-child {
  margin-top: 8px;
}

.pool-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.1s ease, border-color 0.1s ease;
}

.pool-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-2);
}

.pool-card-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.pool-card-status {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.grid-wrap {
  overflow-x: auto;
  padding-bottom: 8px;
}

.grid-shell {
  display: inline-grid;
  grid-template-columns: 44px repeat(10, 1fr);
  grid-template-rows: 44px repeat(10, 1fr);
  gap: 4px;
  min-width: 640px;
  width: 100%;
  margin: 0 auto;
}

.axis-label {
  color: var(--text-dim);
  font-size: 0.7rem;
  text-align: center;
  align-self: center;
  writing-mode: horizontal-tb;
}

.corner {
  background: var(--panel);
  border-radius: 6px;
}

.head-cell {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent-2);
}

.head-cell.pending {
  color: var(--text-dim);
  font-weight: 400;
  font-size: 0.85rem;
}

.box {
  background: var(--open);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-height: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 4px 2px;
  position: relative;
  transition: background 0.12s ease, transform 0.08s ease;
  text-align: center;
}

.box:hover:not(.taken):not(.locked) {
  background: var(--open-hover);
  transform: translateY(-1px);
}

.box .box-num {
  position: absolute;
  top: 2px;
  left: 4px;
  font-size: 0.6rem;
  color: var(--text-dim);
}

.box .box-name {
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.15;
  word-break: break-word;
  padding: 0 3px;
}

.box.taken {
  background: var(--taken);
  cursor: default;
}

.box.taken .box-name { color: var(--text); }

.box.taken.unpaid {
  border: 2px solid var(--danger);
}

.box.taken.paid {
  border: 2px solid var(--success);
}

.box.locked {
  cursor: not-allowed;
  opacity: 0.55;
}

.box.mine {
  outline: 3px dashed var(--mine);
  outline-offset: 2px;
}

.box.selected {
  background: var(--selected);
  border-color: var(--selected);
}

.box.selected .box-num,
.box.selected .box-name {
  color: #1a0d05;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 16, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 50;
}

.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  width: 100%;
  max-width: 360px;
}

.modal h2 {
  margin: 0 0 4px;
  font-size: 1.15rem;
}

.modal p {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0 0 16px;
}

.modal input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.modal .error-text {
  color: var(--danger);
  font-size: 0.8rem;
  min-height: 18px;
  margin-bottom: 8px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 600;
}

.btn-primary {
  background: var(--accent);
  color: #1a0d05;
  flex: 1;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.btn-danger {
  background: var(--danger);
  color: #2a0b0c;
}

.footer-link {
  text-align: center;
  margin-top: 28px;
}

.footer-link a {
  color: var(--text-dim);
  font-size: 0.78rem;
  text-decoration: none;
}

.footer-link a:hover { color: var(--accent-2); }

/* Admin */
.admin-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

.admin-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 18px;
}

.admin-card h2 {
  margin-top: 0;
  font-size: 1.05rem;
}

.field-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.field-row label {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.field-row input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
}

.admin-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.admin-list {
  margin-top: 14px;
  max-height: 420px;
  overflow-y: auto;
  border-top: 1px solid var(--border);
}

.admin-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  gap: 10px;
}

.admin-row .who {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-row .who .real-name {
  color: var(--text-dim);
  font-size: 0.78rem;
}

.admin-row .num {
  color: var(--text-dim);
  width: 34px;
}

.paid-check {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--text-dim);
  white-space: nowrap;
  cursor: pointer;
}

.paid-check input {
  width: 15px;
  height: 15px;
  cursor: pointer;
  accent-color: var(--success);
}

.payment-select {
  font-size: 0.78rem;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 6px;
  flex-shrink: 0;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
}

.msg {
  font-size: 0.85rem;
  margin: 10px 0 0;
}

.msg.err { color: var(--danger); }
.msg.ok { color: var(--success); }

.hidden { display: none !important; }

@media (max-width: 520px) {
  .grid-shell {
    grid-template-columns: 30px repeat(10, 1fr);
    grid-template-rows: 30px repeat(10, 1fr);
    min-width: 460px;
  }
  .box { min-height: 42px; }
  .box .box-name { font-size: 0.6rem; }

  .selection-bar {
    flex-direction: column;
    align-items: stretch;
    position: static;
  }
  .selection-bar > div { display: flex; gap: 8px; }
  .selection-bar button { flex: 1; }

  .admin-row {
    flex-wrap: wrap;
    padding: 10px 4px;
  }
  .admin-row .who { flex-basis: 100%; order: -1; white-space: normal; }
  .admin-row button { padding: 8px 10px; font-size: 0.82rem; }

  .modal { padding: 18px; }
}