:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --card: #ffffff;
  --ink: #111827;
  --muted: #667085;
  --border: #d0d5dd;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --soft: #eff6ff;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  background: var(--primary);
  border: 0;
  border-radius: 10px;
  color: white;
  cursor: pointer;
  font-weight: 700;
  padding: 11px 16px;
}

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

button.secondary {
  background: white;
  border: 1px solid var(--border);
  color: var(--ink);
}

button.secondary:hover {
  background: #f9fafb;
}

button.danger {
  background: #fee4e2;
  border: 1px solid #fecdca;
  color: var(--danger);
}

button.danger:hover {
  background: #fecdca;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.topbar {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 22px min(4vw, 48px) 14px;
}

.topbar-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.topbar-actions form {
  margin: 0;
}

.topbar h1,
.dialog-header h2 {
  margin: 0;
}

.eyebrow {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 5px;
  text-transform: uppercase;
}

.layout {
  padding: 0 min(4vw, 48px) 40px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  padding: 22px;
}

.login-page {
  display: grid;
  min-height: 100vh;
  padding: 24px;
  place-items: center;
}

.login-card {
  max-width: 440px;
  width: 100%;
}

.login-card h1 {
  margin: 0 0 8px;
}

.muted {
  color: var(--muted);
}

.alert {
  border-radius: 12px;
  font-weight: 700;
  margin: 14px 0;
  padding: 11px 13px;
}

.alert.error {
  background: #fee4e2;
  color: var(--danger);
}

.alert.success {
  background: #dcfae6;
  color: #067647;
}

.editor-card {
  min-height: calc(100vh - 118px);
  padding: 18px;
}

.form-row {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

label {
  color: #344054;
  font-weight: 700;
}

input[type="text"],
input[type="password"],
select {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  width: 100%;
}

.actions,
.library-tools,
.draw-toolbar {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.actions {
  margin-top: 16px;
}

.actions form {
  margin: 0;
}

.visually-hidden {
  height: 1px;
  left: -9999px;
  overflow: hidden;
  position: absolute;
  width: 1px;
}

.editor-card .tox-tinymce {
  min-height: 760px;
}

#status {
  color: var(--muted);
  flex: 1 1 260px;
  font-weight: 600;
}

dialog {
  border: 0;
  border-radius: 20px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.24);
  max-width: min(1100px, 94vw);
  padding: 0;
  width: 100%;
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
}

.dialog-header {
  align-items: center;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  padding: 20px 22px;
}

.icon-button {
  align-items: center;
  background: #f2f4f7;
  border-radius: 999px;
  color: var(--ink);
  display: inline-flex;
  font-size: 26px;
  height: 38px;
  justify-content: center;
  line-height: 1;
  padding: 0;
  width: 38px;
}

.icon-button:hover {
  background: #e4e7ec;
}

.library-tools,
.library-list,
.draw-toolbar {
  padding: 18px 22px;
}

.password-form {
  display: grid;
  gap: 14px;
  padding: 20px 22px 22px;
}

.library-tools {
  background: #f9fafb;
  border-bottom: 1px solid var(--border);
}

.library-tools input,
.library-tools select {
  max-width: 160px;
}

.library-list {
  display: grid;
  gap: 10px;
  max-height: 62vh;
  overflow: auto;
}

.library-item {
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr auto auto auto;
  padding: 14px;
}

.library-title {
  font-weight: 800;
}

.library-meta {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.empty-state {
  color: var(--muted);
  padding: 28px;
  text-align: center;
}

.draw-dialog {
  max-width: min(980px, 96vw);
}

.draw-toolbar {
  background: #f9fafb;
  border-bottom: 1px solid var(--border);
}

.draw-toolbar label {
  align-items: center;
  display: inline-flex;
  gap: 8px;
}

#drawingCanvas {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  display: block;
  margin: 18px auto 22px;
  max-width: calc(100% - 44px);
  touch-action: none;
}

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

@media (max-width: 700px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .library-item {
    grid-template-columns: 1fr;
  }

  .layout {
    padding: 0 10px 28px;
  }

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

  .editor-card .tox-tinymce {
    min-height: 68vh;
  }

  .actions > button,
  .actions form,
  .actions form button {
    width: 100%;
  }
}