:root {
  --a-bg: #f4f5f7;
  --a-surface: #ffffff;
  --a-border: #e2e4e9;
  --a-text: #1a1c23;
  --a-text-secondary: #6b7280;
  --a-primary: #2a78d6;
  --a-danger: #d03b3b;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; background: var(--a-bg); color: var(--a-text); }
.ql-hidden { display: none !important; }
.ql-muted { color: var(--a-text-secondary); font-size: 0.9rem; }
.ql-error { color: var(--a-danger); font-weight: 600; min-height: 1.2em; }
.ql-hint { font-size: 0.8rem; color: var(--a-text-secondary); }
code { background: #eef0f4; padding: 2px 6px; border-radius: 6px; }

.ql-btn { border: none; border-radius: 10px; padding: 0.65em 1.2em; font-weight: 700; font-size: 0.92rem; cursor: pointer; }
.ql-btn-primary { background: var(--a-primary); color: #fff; }
.ql-btn-ghost { background: #fff; color: var(--a-text); border: 1.5px solid var(--a-border); }
.ql-btn-danger { color: var(--a-danger); border-color: color-mix(in srgb, var(--a-danger) 40%, var(--a-border)); }
.ql-btn-block { width: 100%; }
.ql-link-btn { background: none; border: none; color: var(--a-primary); font-weight: 700; cursor: pointer; font-size: 0.85rem; text-decoration: none; padding: 6px 0; text-align: left; }
.ql-icon-btn { background: #fff; border: 1.5px solid var(--a-border); border-radius: 8px; width: 30px; height: 30px; cursor: pointer; font-size: 0.9rem; color: var(--a-text-secondary); }
.ql-icon-btn:hover { color: var(--a-text); border-color: var(--a-primary); }

/* ---- Login ---- */
.ql-login { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.ql-login-card { background: var(--a-surface); border-radius: 20px; padding: 40px; width: 100%; max-width: 360px; box-shadow: 0 10px 40px rgba(0,0,0,0.08); display: flex; flex-direction: column; gap: 14px; }
.ql-login-card h1 { margin: 0; }
.ql-login-card input { padding: 0.8em 1em; border-radius: 10px; border: 1.5px solid var(--a-border); font-size: 1rem; }

/* ---- Layout ---- */
.ql-admin { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.ql-sidebar { background: var(--a-surface); border-right: 1px solid var(--a-border); padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.ql-sidebar-header { display: flex; align-items: center; justify-content: space-between; }
.ql-sidebar-header h2 { margin: 0; font-size: 1.2rem; }
.ql-side-list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.ql-side-item { border: 1.5px solid var(--a-border); border-radius: 12px; padding: 12px 14px; cursor: pointer; background: #fff; }
.ql-side-item:hover { border-color: var(--a-primary); }
.ql-side-item.active { border-color: var(--a-primary); background: color-mix(in srgb, var(--a-primary) 8%, #fff); }
.ql-side-item h4 { margin: 0 0 2px; font-size: 0.95rem; }
.ql-side-item span { font-size: 0.78rem; color: var(--a-text-secondary); }
.ql-sidebar-footer { border-top: 1px solid var(--a-border); padding-top: 12px; display: flex; flex-direction: column; gap: 4px; }

.ql-main { padding: 28px 36px; overflow-y: auto; }
.ql-empty-state { color: var(--a-text-secondary); text-align: center; margin-top: 80px; }

.ql-editor-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 16px; }
.ql-title-input { font-size: 1.5rem; font-weight: 800; border: none; background: none; flex: 1; min-width: 200px; padding: 6px 0; border-bottom: 2px solid transparent; }
.ql-title-input:focus { outline: none; border-bottom-color: var(--a-primary); }
.ql-editor-actions { display: flex; align-items: center; gap: 10px; }
.ql-save-status { font-size: 0.82rem; color: var(--a-text-secondary); min-width: 90px; }

.ql-tabs { display: flex; gap: 6px; border-bottom: 1.5px solid var(--a-border); margin-bottom: 20px; flex-wrap: wrap; }
.ql-tab { background: none; border: none; padding: 10px 16px; font-weight: 700; color: var(--a-text-secondary); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -1.5px; }
.ql-tab.active { color: var(--a-primary); border-bottom-color: var(--a-primary); }

.ql-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.ql-field label { font-size: 0.82rem; font-weight: 700; color: var(--a-text-secondary); }
.ql-field input[type="text"], .ql-field input[type="number"], .ql-field select, .ql-field textarea {
  padding: 0.6em 0.8em; border-radius: 10px; border: 1.5px solid var(--a-border); font-size: 0.95rem; font-family: inherit; background: #fff; color: var(--a-text);
}
.ql-field-row { display: flex; gap: 20px; flex-wrap: wrap; }
.ql-field-color { flex-direction: row; align-items: center; }
.ql-field-color label { min-width: 170px; }
.ql-field-color input[type="color"] { width: 44px; height: 34px; border: none; border-radius: 8px; padding: 0; background: none; }

/* ---- Preguntas ---- */
.ql-questions-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 16px; }
.ql-question-card { background: var(--a-surface); border: 1.5px solid var(--a-border); border-radius: 16px; padding: 18px 20px; }
.ql-question-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.ql-question-index { font-weight: 800; color: var(--a-primary); }
.ql-question-head-actions { display: flex; gap: 6px; }
.ql-options-editor { display: flex; flex-direction: column; gap: 8px; margin: 10px 0; }
.ql-option-editor-row { display: flex; align-items: center; gap: 10px; }
.ql-option-editor-row .o-text { flex: 1; padding: 0.5em 0.8em; border-radius: 8px; border: 1.5px solid var(--a-border); font-family: inherit; }
.ql-option-editor-row .o-correct { width: 18px; height: 18px; accent-color: #0ca30c; }
.ql-question-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---- Paleta ---- */
.ql-palette-editor { display: flex; gap: 12px; flex-wrap: wrap; }
.ql-palette-swatch { display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: 0.75rem; color: var(--a-text-secondary); }
.ql-palette-swatch input { width: 46px; height: 36px; border: none; border-radius: 8px; padding: 0; }

/* ---- Preview de tema ---- */
.ql-theme-preview { margin-top: 20px; }
.ql-preview-box {
  border-radius: 16px; padding: 26px; display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
  min-height: 140px;
}
.ql-preview-title { font-size: 1.3rem; font-weight: 800; }
.ql-preview-card { padding: 10px 18px; border-radius: 10px; font-weight: 700; }

/* ---- Modal ---- */
.ql-modal { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; z-index: 50; }
.ql-modal-card { background: #fff; border-radius: 16px; padding: 28px; width: 100%; max-width: 380px; }
.ql-modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 10px; }

@media (max-width: 800px) {
  .ql-admin { grid-template-columns: 1fr; }
  .ql-sidebar { border-right: none; border-bottom: 1px solid var(--a-border); }
}