/* ============================================================
   KLARO — DESIGN SYSTEM v1.0
   Fuentes: Syne (display) + DM Sans (body)
   Paleta: oscuro profundo con acentos violeta-eléctrico
   Mobile-first, PWA-ready
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ── TOKENS ─────────────────────────────────────────────── */
:root {
  --bg:         #0a0a0f;
  --bg-2:       #12121a;
  --bg-3:       #1a1a26;
  --bg-card:    #14141e;
  --border:     rgba(255,255,255,0.07);
  --border-2:   rgba(255,255,255,0.12);

  --violet:     #6c63ff;
  --violet-2:   #8b83ff;
  --violet-dim: rgba(108,99,255,0.15);
  --violet-glow:rgba(108,99,255,0.25);

  --green:      #22c55e;
  --green-dim:  rgba(34,197,94,0.12);
  --amber:      #f59e0b;
  --amber-dim:  rgba(245,158,11,0.12);
  --blue:       #3b82f6;
  --blue-dim:   rgba(59,130,246,0.12);
  --pink:       #ec4899;
  --pink-dim:   rgba(236,72,153,0.12);
  --red:        #ef4444;
  --red-dim:    rgba(239,68,68,0.12);

  --text-1:     #f0f0fa;
  --text-2:     #9090b0;
  --text-3:     #5a5a78;

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  24px;

  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── RESET ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-1);
  min-height: 100dvh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── LAYOUT ──────────────────────────────────────────────── */
.app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.screen {
  display: none;
  flex-direction: column;
  min-height: 100dvh;
  padding: 0;
  animation: fadeIn 300ms ease;
}
.screen.active { display: flex; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── TOPBAR ─────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  backdrop-filter: blur(10px);
}

.topbar-logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--violet-2);
  letter-spacing: -0.5px;
}

.topbar-xp {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--amber);
  background: var(--amber-dim);
  padding: 5px 10px;
  border-radius: 20px;
}

.topbar-racha {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--pink);
  background: var(--pink-dim);
  padding: 5px 10px;
  border-radius: 20px;
}

/* ── BOTONES ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), opacity var(--transition);
  width: 100%;
  text-decoration: none;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--violet);
  color: #fff;
}
.btn-primary:hover { background: var(--violet-2); }

.btn-secondary {
  background: var(--bg-3);
  color: var(--text-1);
  border: 1px solid var(--border-2);
}
.btn-secondary:hover { border-color: var(--violet); }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
}

.btn-sm {
  padding: 9px 16px;
  font-size: 13px;
  width: auto;
  border-radius: var(--radius-sm);
}

/* ── CARDS ───────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.card-highlight {
  border-color: var(--violet);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(108,99,255,0.05) 100%);
}

/* ── BARRA DE PROGRESO ───────────────────────────────────── */
.progress-wrap {
  background: var(--bg-3);
  border-radius: 20px;
  height: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 20px;
  transition: width 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── PANTALLA ONBOARDING ─────────────────────────────────── */
.onboarding-hero {
  padding: 60px 24px 40px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.klaro-mark {
  width: 80px;
  height: 80px;
  background: var(--violet-dim);
  border: 2px solid var(--violet);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--violet-2);
  margin: 0 auto 28px;
  box-shadow: 0 0 40px var(--violet-glow);
}

.onboarding-title {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-1);
  margin-bottom: 14px;
  letter-spacing: -1px;
}

.onboarding-title span { color: var(--violet-2); }

.onboarding-sub {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.6;
  max-width: 320px;
  margin: 0 auto 40px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 100%;
  margin-bottom: 32px;
}

.feature-chip {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
  font-size: 13px;
  color: var(--text-2);
}

.feature-chip .feat-icon { font-size: 22px; display: block; margin-bottom: 4px; }

.onboarding-actions {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── PANTALLA DASHBOARD ──────────────────────────────────── */
.dash-content {
  padding: 20px;
  flex: 1;
  overflow-y: auto;
}

.dash-greeting {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 4px;
}

.dash-sub {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 24px;
}

.nivel-card {
  background: var(--violet-dim);
  border: 1px solid var(--violet);
  border-radius: var(--radius-lg);
  padding: 18px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.nivel-badge {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--violet);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.nivel-info { flex: 1; min-width: 0; }
.nivel-nombre { font-size: 15px; font-weight: 500; color: var(--text-1); }
.nivel-xp { font-size: 12px; color: var(--text-2); margin-bottom: 8px; }

.section-title {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-3);
  margin-bottom: 10px;
  margin-top: 24px;
}

.areas-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.area-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
}

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

.area-card:active { transform: scale(0.97); }

.area-icon { font-size: 24px; margin-bottom: 8px; }
.area-nombre { font-size: 13px; font-weight: 500; color: var(--text-1); margin-bottom: 6px; }
.area-pct { font-size: 12px; color: var(--text-2); margin-bottom: 8px; }

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.stat-mini {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
}

.stat-mini-val { font-family: var(--font-display); font-size: 20px; font-weight: 700; }
.stat-mini-lbl { font-size: 11px; color: var(--text-3); margin-top: 2px; }

.insignias-scroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
  margin-bottom: 16px;
  scrollbar-width: none;
}
.insignias-scroll::-webkit-scrollbar { display: none; }

.insignia-chip {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 76px;
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text-2);
  text-align: center;
}

.insignia-chip.desbloqueada {
  background: var(--violet-dim);
  border-color: var(--violet);
  color: var(--violet-2);
}

.insignia-icon { font-size: 22px; }
.insignia-lock { font-size: 16px; opacity: 0.3; }

/* ── PANTALLA PREGUNTA ────────────────────────────────────── */
.quiz-header {
  padding: 16px 20px 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.quiz-area-tag {
  font-size: 11px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.quiz-progress-text {
  font-size: 12px;
  color: var(--text-3);
  margin-left: auto;
}

.quiz-body {
  padding: 24px 20px;
  flex: 1;
  overflow-y: auto;
}

.quiz-dificultad {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.dif-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
}
.dif-dot.on { background: var(--amber); border-color: var(--amber); }

.quiz-pregunta {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-1);
  margin-bottom: 28px;
  letter-spacing: -0.3px;
  white-space: pre-line;
}

.opciones-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.opcion-btn {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 15px 16px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-1);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1.4;
}

.opcion-btn:hover:not(:disabled) {
  border-color: var(--violet);
  background: var(--violet-dim);
}

.opcion-btn:active:not(:disabled) { transform: scale(0.98); }

.opcion-letra {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  flex-shrink: 0;
}

.opcion-btn.correcta {
  border-color: var(--green);
  background: var(--green-dim);
}
.opcion-btn.correcta .opcion-letra {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
}

.opcion-btn.incorrecta {
  border-color: var(--red);
  background: var(--red-dim);
}
.opcion-btn.incorrecta .opcion-letra {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}

.opcion-btn:disabled { cursor: default; }

/* ── FEEDBACK ─────────────────────────────────────────────── */
.feedback-panel {
  margin: 0 20px 20px;
  border-radius: var(--radius-lg);
  padding: 18px;
  animation: slideUp 300ms ease;
  display: none;
}

.feedback-panel.visible { display: block; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.feedback-panel.correcto {
  background: var(--green-dim);
  border: 1px solid var(--green);
}

.feedback-panel.incorrecto {
  background: rgba(108,99,255,0.08);
  border: 1px solid var(--violet);
}

.feedback-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.feedback-emoji { font-size: 22px; }

.feedback-titulo {
  font-weight: 500;
  font-size: 15px;
}

.feedback-panel.correcto .feedback-titulo { color: var(--green); }
.feedback-panel.incorrecto .feedback-titulo { color: var(--violet-2); }

.feedback-texto {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 10px;
}

.feedback-extra {
  font-size: 13px;
  color: var(--text-3);
  font-style: italic;
}

.feedback-xp {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--amber-dim);
  color: var(--amber);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 20px;
  margin-top: 8px;
}

.quiz-footer {
  padding: 16px 20px 32px;
}

/* ── TOAST INSIGNIA ──────────────────────────────────────── */
.toast-insignia {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--violet);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 8px 32px var(--violet-glow);
  opacity: 0;
  transition: opacity 400ms, transform 400ms;
  z-index: 100;
  pointer-events: none;
  white-space: nowrap;
}

.toast-insignia.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── RESUMEN ─────────────────────────────────────────────── */
.resumen-content {
  padding: 32px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.resumen-emoji { font-size: 56px; margin-bottom: 16px; }

.resumen-titulo {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.resumen-msg {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 32px;
  max-width: 280px;
}

.resumen-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  width: 100%;
  margin-bottom: 32px;
}

.resumen-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 10px;
}

.resumen-stat-val {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--violet-2);
}

.resumen-stat-lbl {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 3px;
}

.resumen-area-debil {
  background: var(--amber-dim);
  border: 1px solid var(--amber);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 32px;
  font-size: 14px;
  color: var(--text-2);
  text-align: left;
  width: 100%;
}

.resumen-area-debil strong { color: var(--amber); }

.resumen-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

/* ── SCROLLBAR ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

/* ── SAFE AREA (iPhone notch) ────────────────────────────── */
.onboarding-actions,
.quiz-footer,
.resumen-actions {
  padding-bottom: max(32px, env(safe-area-inset-bottom));
}

/* ── PANTALLA AUTH ───────────────────────────────────────── */
.auth-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  gap: 24px;
}

.auth-hero {
  text-align: center;
}

.auth-titulo-marca {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--violet-2);
  letter-spacing: -1px;
  margin: 10px 0 6px;
}

.auth-sub {
  font-size: 14px;
  color: var(--text-2);
  max-width: 260px;
  margin: 0 auto;
  line-height: 1.5;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 24px;
  width: 100%;
  max-width: 360px;
}

.auth-titulo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 20px;
  letter-spacing: -0.3px;
}

.auth-error {
  background: var(--red-dim);
  border: 1px solid var(--red);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 13px;
  color: var(--red);
  margin-bottom: 12px;
}

.input-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.input-field {
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-1);
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
}

.input-field::placeholder { color: var(--text-3); }
.input-field:focus { border-color: var(--violet); }

.auth-link-txt {
  font-size: 13px;
  color: var(--text-2);
  text-align: center;
}

.auth-link {
  color: var(--violet-2);
  text-decoration: none;
  font-weight: 500;
}

.auth-link:hover { text-decoration: underline; }

.auth-disclaimer {
  font-size: 12px;
  color: var(--text-3);
  text-align: center;
}

/* ── LOADING PULSE ───────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.95); }
}

/* ── BTN LOGOUT ─────────────────────────────────────────── */
.btn-logout {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-3);
  font-family: var(--font-body);
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.btn-logout:hover {
  color: var(--text-1);
  border-color: var(--border-2);
}