:root {
  --bg-start: #eef2ff;
  --bg-end: #ecfeff;
  --card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --line: #cbd5e1;
  --thead: #1e293b;
  --accent: #0ea5e9;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f97316;
  --admin: #334155;
  --locked: #d1d5db;
  --blocked: #6b7280;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  min-height: 100vh;
  background: radial-gradient(circle at top right, var(--bg-start), var(--bg-end));
  color: var(--text-main);
  padding: 18px;
}

.app-shell {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.top-admin-controls {
  position: fixed;
  top: max(10px, env(safe-area-inset-top));
  right: 0;
  display: flex;
  gap: 8px;
  z-index: 10;
  padding-right: max(10px, env(safe-area-inset-right));
}

.admin-mini-button {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  color: #334155;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.12);
  cursor: pointer;
}

.admin-mini-button:hover {
  background: #f8fafc;
}

.card {
  background: var(--card);
  border-radius: 20px;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.12);
  padding: 18px;
}

.header-content {
  text-align: center;
  margin-bottom: 20px;
}

.quick-help {
  margin: 12px auto 0;
  max-width: 900px;
  text-align: left;
  background: #ecfeff;
  color: #0f172a;
  border: 1px solid #bae6fd;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.92rem;
  line-height: 1.4;
}

.logo {
  height: 84px;
  display: block;
  margin: 0 auto 10px;
}

h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
}

h2 {
  margin: 8px 0 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  min-width: 760px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 10px;
  text-align: center;
  height: 62px;
  background: #f8fafc;
  font-size: 0.92rem;
}

th {
  background: var(--thead);
  color: #fff;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

td.time-cell {
  font-weight: 700;
  white-space: nowrap;
  background: #e2e8f0;
}

td.clickable-cell:hover {
  background: #bae6fd;
  cursor: pointer;
}

td.locked-cell {
  background: var(--locked);
  color: #6b7280;
  pointer-events: none;
}

td.editing-lock-cell {
  background: #fde68a;
  color: #78350f;
  pointer-events: none;
}

td.permanent-block-cell {
  background: var(--blocked);
  color: white;
  pointer-events: none;
}

.button-footer-container {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

button {
  border: none;
  border-radius: 12px;
  padding: 12px 16px;
  min-height: 46px;
  color: white;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  filter: brightness(0.95);
}

.update-button { background: var(--accent); }
.new-week-button { background: var(--warning); }
.lock-button { background: #16a34a; }
.register-button { background: var(--success); }
.edit-button { background: #2563eb; }
.red-delete-button { background: var(--danger); }

.danger-action {
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.45);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
}

.modal-content {
  width: min(92vw, 460px);
  background: white;
  border-radius: 16px;
  padding: 20px;
  position: relative;
}

.modal-content h2 {
  margin-top: 0;
  text-align: center;
}

.modal-close-button {
  position: absolute;
  right: 10px;
  top: 10px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0;
}

.form-group {
  margin-bottom: 12px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.92rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  min-height: 44px;
  padding: 10px;
  font-family: inherit;
  font-size: 1rem;
}

.selected-week-preview {
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #f8fafc;
  color: #0f172a;
  font-weight: 700;
  min-height: 42px;
  display: flex;
  align-items: center;
}

.button-group {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.button-group.vertical {
  flex-direction: column;
}

.message-box {
  margin-top: 12px;
  border-radius: 10px;
  padding: 10px;
  text-align: center;
  display: none;
  font-size: 0.9rem;
}

.message-box.success {
  display: block;
  background: #dcfce7;
  color: #166534;
}

.message-box.error {
  display: block;
  background: #fee2e2;
  color: #991b1b;
}

.hidden {
  display: none;
}

@media (max-width: 860px) {
  body {
    padding: 14px;
  }

  .card {
    border-radius: 16px;
    padding: 14px;
  }

  .quick-help {
    font-size: 0.88rem;
    padding: 9px 10px;
  }

  th,
  td {
    padding: 8px;
    height: 56px;
    font-size: 0.85rem;
  }

  th {
    font-size: 0.72rem;
  }

  .button-footer-container {
    grid-template-columns: 1fr;
  }

  .modal-content {
    width: min(96vw, 460px);
    border-radius: 14px;
    padding: 16px;
  }
}

@media (max-width: 560px) {
  body {
    padding: 10px;
  }

  .top-admin-controls {
    top: max(8px, env(safe-area-inset-top));
    padding-right: max(8px, env(safe-area-inset-right));
  }

  .admin-mini-button {
    width: 36px;
    height: 36px;
  }

  .header-content {
    margin-top: 26px;
  }

  .logo {
    height: 68px;
  }

  .button-footer-container {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  h1 {
    font-size: 1.05rem;
    line-height: 1.25;
  }

  h2 {
    font-size: 0.95rem;
  }

  table {
    min-width: 620px;
  }

  th,
  td {
    padding: 6px;
    height: 50px;
    font-size: 0.8rem;
  }

  .modal-overlay {
    align-items: flex-end;
  }

  .modal-content {
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    border-radius: 16px 16px 0 0;
    padding: 14px;
  }

  .button-group {
    flex-direction: column;
  }
}