/* ============================================================
   EMOJISH v2 — Design System
   Full-screen card UX, dark purple, emoji-centric
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;700;800;900&display=swap');

/* ─── Variables ──────────────────────────────────────────── */
:root {
  --bg:       #0d0c1e;
  --surface:  #16153a;
  --surface2: #1e1d4a;
  --border:   rgba(255,255,255,0.08);
  --accent:   #f4a261;
  --accent2:  #e76f51;
  --teal:     #2ec4b6;
  --success:  #00d68f;
  --error:    #ff3b50;
  --muted:    #7874a8;
  --text:     #fffffe;
  --font:     'Outfit', sans-serif;
  --radius:   20px;
  --nav-h:    72px;
}

body.light-theme {
  --bg:       #f8fafc;
  --surface:  #ffffff;
  --surface2: #f1f5f9;
  --border:   rgba(0,0,0,0.08);
  --muted:    #64748b;
  --text:     #0f172a;
}

/* ─── Utilities ─────────────────────────────────────────── */
.hidden { display: none !important; }

/* Ocultar header en la pantalla de auth */
body:has(#view-auth.active) .app-header { display: none; }

/* ─── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  width: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* ─── Header ─────────────────────────────────────────────── */
.app-header {
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(13, 12, 30, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.hdr-inner {
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  box-sizing: border-box;
}
@media (max-width: 640px) {
  .hdr-inner {
    padding: 10px 14px;
    gap: 8px;
  }
  .hdr-ext-lbl {
    display: none;
  }
}
.btn-hdr-ext {
  background: linear-gradient(135deg, rgba(99,102,241,0.22), rgba(244,162,97,0.22));
  border: 1px solid rgba(244,162,97,0.45);
  border-radius: 12px;
  font-size: 0.86rem;
  font-weight: 700;
  color: #fbd38d;
  padding: 8px 14px;
  cursor: pointer;
  transition: all .2s;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font);
}
.btn-hdr-ext:hover {
  background: linear-gradient(135deg, rgba(99,102,241,0.38), rgba(244,162,97,0.38));
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(244,162,97,0.25);
}
.btn-hdr-ext:active { transform: scale(0.96); }
.btn-hdr {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 1.25rem;
  width: 44px; height: 44px;
  cursor: pointer;
  transition: transform .15s, background .15s;
  flex-shrink: 0;
  color: var(--text);
  display: flex; align-items: center; justify-content: center;
}
.btn-hdr:hover { transform: scale(1.08); background: var(--surface); }
.btn-hdr:active { transform: scale(0.95); }
.hdr-mid {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.hdr-xp {
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  color: var(--accent);
  letter-spacing: 0.05em;
  background: var(--surface);
  border-radius: 10px;
  padding: 4px;
}
.hdr-progress {
  width: 100%;
}
.hdr-prog-bar {
  height: 6px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
}
.hdr-prog-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--accent));
  border-radius: 99px;
  transition: width 0.5s cubic-bezier(.4,0,.2,1);
}
.hdr-prog-text {
  font-size: 0.7rem;
  color: var(--muted);
  text-align: right;
}

/* ─── Views ──────────────────────────────────────────────── */
.view {
  display: none;
  flex: 1;
  overflow-y: auto;
  width: 100%;
}
.view.active {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 1300px;
  margin: 0 auto;
  box-sizing: border-box;
  padding: 20px 24px;
}
@media (max-width: 640px) {
  .view.active {
    padding: 12px 14px;
  }
}

/* ─── Navigation Header (Back button + Title) ────────────── */
.view-nav-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  gap: 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.btn-back-nav {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}
.btn-back-nav:hover { background: var(--surface); transform: scale(1.05); }
.view-nav-header h2 {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0;
  color: var(--text);
}

/* ─── HOME ───────────────────────────────────────────────── */
.home-hero {
  text-align: center;
  padding: 32px 24px 20px;
  background: radial-gradient(ellipse at 50% 0%, rgba(124,58,237,0.18) 0%, transparent 70%);
}
.mascot {
  font-size: 5rem;
  display: block;
  animation: mascot-float 3s ease-in-out infinite;
  filter: drop-shadow(0 0 24px rgba(244,162,97,0.4));
  cursor: default;
  user-select: none;
}
@keyframes mascot-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.home-hero h1 {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  background: linear-gradient(135deg, #f4a261, #e76f51, #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 8px 0 6px;
}
.home-hero .hero-sub {
  color: var(--muted);
  font-size: 0.95rem;
}

/* ─── AUTH VIEW ────────────────────────────────────────────── */
.auth-box {
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 460px;
  width: 100%;
  margin: 32px auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.input-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--muted);
}
.input-group input {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 14px;
  border-radius: 12px;
  font-family: var(--font);
  font-size: 1rem;
}
.input-group input:focus {
  outline: none;
  border-color: var(--teal);
}
.auth-submit { width: 100%; margin: 0; }
.auth-separator {
  text-align: center;
  color: var(--muted);
  margin: 24px 0;
  font-size: 0.85rem;
  position: relative;
}
.auth-separator::before, .auth-separator::after {
  content: ''; display: block; position: absolute;
  top: 50%; width: 40%; height: 1px; background: var(--border);
}
.auth-separator::before { left: 0; }
.auth-separator::after { right: 0; }
.auth-google {
  background: #fff;
  color: #1f1f1f;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  margin: 0;
  border: 1px solid #dadce0;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 16px;
  border-radius: 12px;
  cursor: pointer;
  font-family: var(--font);
  transition: background .15s, box-shadow .15s;
}
.auth-google:hover {
  background: #f8f9fa;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.auth-google:active { transform: scale(0.98); }
.google-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.auth-error {
  color: var(--card-wrong-bg, #ff3b50);
  background: rgba(255,59,80,0.1);
  padding: 12px; border-radius: 8px;
  font-size: 0.85rem; text-align: center;
}

/* ─── OTP Verification Section ───────────────────────────── */
.otp-section {
  animation: fadeSlideIn 0.3s ease;
}
.otp-header {
  text-align: center;
  margin-bottom: 24px;
}
.otp-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 10px;
}
.otp-header h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text);
}
.otp-header p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}
.otp-header strong { color: var(--accent); }

/* ─── HOME AND TABS ──────────────────────────────────────── */

.track-tabs {
  display: flex;
  padding: 0 24px;
  gap: 10px;
  margin-bottom: 20px;
}
.track-tab {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 12px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}
.track-tab.active {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--teal);
}

/* ─── Extension Showcase Card (Home Hero) ─────────────────── */
.ext-hero-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: linear-gradient(135deg, rgba(22, 21, 58, 0.95) 0%, rgba(30, 27, 75, 0.8) 100%);
  border: 1px solid rgba(129, 140, 248, 0.3);
  border-radius: 22px;
  padding: 28px 32px;
  margin: 16px 0 28px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  width: 100%;
}
.ext-hero-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.28) 0%, transparent 70%);
  pointer-events: none;
}
.ext-hero-left {
  flex: 1;
  max-width: 740px;
}
.ext-pill-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 10px;
}
.ext-hero-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin: 0 0 8px;
  line-height: 1.25;
  color: #ffffff;
}
.ext-hero-desc {
  color: #cbd5e1;
  font-size: 0.92rem;
  line-height: 1.5;
  margin: 0 0 18px;
}
.ext-hero-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.btn-ext-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: 14px;
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
  transition: all 0.2s ease;
  font-family: var(--font);
}
.btn-ext-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(245, 158, 11, 0.45);
}
.btn-ext-download:active { transform: scale(0.97); }
.btn-ext-guide {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #e2e8f0;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 18px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font);
}
.btn-ext-guide:hover {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.32);
  transform: translateY(-2px);
}
.ext-hero-right {
  flex-shrink: 0;
}
.ext-browser-mockup {
  background: #090914;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  width: 270px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}
.mock-hdr {
  background: rgba(255, 255, 255, 0.05);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mock-hdr .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.mock-hdr .dot.red { background: #ef4444; }
.mock-hdr .dot.yellow { background: #f59e0b; }
.mock-hdr .dot.green { background: #10b981; }
.mock-title { font-size: 0.72rem; color: #94a3b8; margin-left: 8px; font-family: monospace; }
.mock-body { padding: 16px; text-align: center; }
.mock-badge { display: inline-block; font-size: 0.7rem; color: #38bdf8; background: rgba(56, 189, 248, 0.12); padding: 2px 8px; border-radius: 6px; font-weight: 700; margin-bottom: 8px; }
.mock-token-line { font-size: 1.15rem; font-weight: 700; letter-spacing: 0.06em; color: #facc15; margin-bottom: 4px; }
.mock-es-line { font-size: 0.78rem; color: #94a3b8; }

@media (max-width: 860px) {
  .ext-hero-card { flex-direction: column; text-align: center; padding: 22px 18px; }
  .ext-hero-left { max-width: 100%; }
  .ext-hero-btn-row { justify-content: center; }
  .ext-hero-right { display: none; }
}

/* ─── Guide Modal Steps ───────────────────────────────────── */
.guide-steps-list { display: flex; flex-direction: column; gap: 14px; margin: 16px 0; }
.g-step { display: flex; gap: 14px; align-items: flex-start; }
.g-step-num { width: 32px; height: 32px; border-radius: 50%; background: var(--teal); color: #0d0c1e; font-weight: 800; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 0.95rem; }
.g-step-body strong { color: #ffffff; font-size: 0.95rem; display: block; margin-bottom: 2px; }
.g-step-body p { color: var(--muted); font-size: 0.85rem; line-height: 1.45; margin: 0; }
.g-step-body code { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 6px; color: #f59e0b; font-family: monospace; font-size: 0.85rem; }
.ext-modal-alert { background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(16, 185, 129, 0.3); border-radius: 12px; padding: 12px 16px; font-size: 0.85rem; color: #a7f3d0; margin-top: 12px; line-height: 1.45; }

/* ─── Track Grid (Responsive Multi-Column) ────────────────── */
.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  padding: 0 0 24px;
  width: 100%;
}
@media (min-width: 768px) {
  .track-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
}
@media (min-width: 1100px) {
  .track-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}
@media (min-width: 1440px) {
  .track-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
  }
}
.track-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 22px 16px 18px;
  cursor: pointer;
  transition: all 0.22s cubic-bezier(.4,0,.2,1);
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: var(--font);
  color: var(--text);
  overflow: hidden;
  min-height: 130px;
  justify-content: center;
}
.track-card:hover:not(.coming-soon) {
  background: var(--surface2);
  border-color: var(--teal);
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(46,196,182,0.22);
}
.track-card:active:not(.coming-soon) { transform: scale(0.97); }
.track-card.active {
  border-color: var(--accent);
  background: rgba(244,162,97,0.09);
  box-shadow: 0 0 0 3px rgba(244,162,97,0.25), 0 8px 24px rgba(244,162,97,0.15);
}
.track-card.coming-soon {
  opacity: 0.52;
  cursor: not-allowed;
}
.tc-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.55rem;
  font-weight: 800;
  background: var(--teal);
  color: #0d0c1e;
  padding: 3px 8px;
  border-radius: 6px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.tc-icon { font-size: 2.4rem; margin-bottom: 4px; }
.tc-label { font-size: 1.05rem; font-weight: 800; }
.tc-sub { font-size: 0.78rem; color: var(--muted); }

/* ─── Home Action Buttons ─────────────────────────────────── */
.home-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  padding: 0 0 36px;
  width: 100%;
}
.btn-action-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 20px;
  cursor: pointer;
  font-family: var(--font);
  color: var(--text);
  text-align: left;
  transition: background .2s, transform .15s, border-color .2s;
  width: 100%;
}
.btn-action-card:hover {
  background: var(--surface2);
  border-color: rgba(255,255,255,0.2);
  transform: translateX(4px);
}
.btn-action-card:active { transform: scale(0.98); }
.ba-icon { font-size: 1.4rem; flex-shrink: 0; }
.ba-label { flex: 1; font-size: 0.95rem; font-weight: 700; }
.ba-arrow { font-size: 1.5rem; color: var(--muted); font-weight: 300; flex-shrink: 0; line-height: 1; }

/* Continue / CTA buttons */
.btn-cta {
  margin: 12px 24px;
  background: linear-gradient(135deg, var(--teal), #0080ff);
  color: #fff;
  border: none;
  border-radius: 16px;
  padding: 16px 24px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  width: calc(100% - 48px);
  text-align: left;
  transition: transform .15s, opacity .15s;
  display: flex; align-items: center; justify-content: space-between;
}
.btn-cta:hover { transform: scale(1.02); opacity: 0.95; }
.btn-cta:active { transform: scale(0.98); }
.btn-secondary {
  margin: 8px 24px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 16px;
  padding: 14px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  width: calc(100% - 48px);
  transition: background .15s, transform .15s;
}
.btn-secondary:hover { background: var(--surface2); transform: scale(1.01); }

/* Primary Button */
.btn-primary {
  margin: 8px 24px 24px;
  background: var(--accent);
  border: none;
  color: var(--bg);
  border-radius: 16px;
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 800;
  font-family: var(--font);
  cursor: pointer;
  transition: transform .15s, opacity .15s;
  width: calc(100% - 48px);
}
.btn-primary:hover { transform: scale(1.02); opacity: 0.95; }
.btn-primary:active { transform: scale(0.98); }

/* Chapter Grid */
.section-lbl {
  padding: 16px 24px 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}
.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
  padding: 0 0 24px;
  width: 100%;
}
.chapter-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  transition: background .2s, transform .15s, border-color .2s;
  text-decoration: none;
}
.chapter-card:hover { background: var(--surface2); transform: translateX(4px); }
.chapter-card:active { transform: scale(0.98); }
.chapter-card.locked { cursor: not-allowed; opacity: 0.5; }
.chapter-card.locked:hover { transform: none; background: var(--surface); }
.chapter-card.completed { border-color: rgba(0,214,143,0.3); }
.ch-emoji { font-size: 2.2rem; flex-shrink: 0; }
.ch-info { flex: 1; }
.ch-num { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; color: var(--accent); letter-spacing: 0.06em; }
.ch-sub { font-size: 0.95rem; font-weight: 700; margin-top: 2px; }
.ch-preview { display: flex; gap: 4px; margin-top: 6px; font-size: 1rem; }
.ch-status { font-size: 1.2rem; flex-shrink: 0; }

/* ─── LESSON VIEW ─────────────────────────────────────────── */
#view-lesson {
  padding-bottom: var(--nav-h);
}
.step-display {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 24px;
  min-height: calc(100dvh - 60px - var(--nav-h));
  animation: fadeSlideIn 0.3s ease;
}
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Chapter Intro Screen ───────────────────────────────── */
.chapter-splash {
  text-align: center;
  width: 100%;
}
.chapter-splash-emoji {
  font-size: 5rem;
  margin-bottom: 16px;
  display: block;
  animation: pop-in 0.4s cubic-bezier(.17,.67,.4,1.3);
}
@keyframes pop-in {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}
.chapter-splash h2 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 8px;
}
.chapter-splash h3 {
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 16px;
}
.chapter-splash .ch-preview-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 2rem;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.ch-preview-row span {
  animation: pop-in 0.4s ease both;
}
.chapter-splash p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ─── Card Intro ─────────────────────────────────────────── */
.card-intro {
  text-align: center;
  width: 100%;
}
.card-emoji-btn {
  font-size: 4rem;
  line-height: 1.1;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 24px;
  min-width: 110px;
  min-height: 100px;
  width: fit-content;
  max-width: 90%;
  padding: 18px 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 auto 24px;
  align-items: center; 
  justify-content: center;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, border-color .2s;
  position: relative;
  animation: pop-in 0.35s cubic-bezier(.17,.67,.4,1.3);
  box-shadow: 0 0 40px rgba(124,58,237,0.12);
}
.card-emoji-btn:hover {
  transform: scale(1.06);
  border-color: var(--accent);
  box-shadow: 0 8px 40px rgba(244,162,97,0.25);
}
.card-emoji-btn:active { transform: scale(0.96); }
.card-emoji-btn .speak-ripple {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle, rgba(244,162,97,0.15) 0%, transparent 70%);
  animation: ripple 0.4s ease-out;
  pointer-events: none;
}
@keyframes ripple {
  from { opacity: 1; transform: scale(0.8); }
  to   { opacity: 0; transform: scale(1.2); }
}

/* Emoji display en modo ejercicio (no interactivo, auto-size para 2+ emojis) */
.card-emoji-view {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 4rem;
  line-height: 1.1;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 24px;
  padding: 18px 22px;
  margin: 0 auto 20px;
  min-width: 110px;
  min-height: 100px;
  width: fit-content;
  max-width: 90%;
  cursor: default;
  pointer-events: none;
  animation: pop-in 0.35s cubic-bezier(.17,.67,.4,1.3);
  box-shadow: 0 0 40px rgba(124,58,237,0.12);
}
.card-word {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.card-phonetic {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  font-style: italic;
  margin-bottom: 16px;
}
.btn-speak-again {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 99px;
  padding: 8px 18px;
  font-size: 0.85rem;
  font-family: var(--font);
  cursor: pointer;
  margin-bottom: 16px;
  transition: color .15s, border-color .15s;
}
.btn-speak-again:hover { color: var(--text); border-color: var(--accent); }
.btn-toggle-translation {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 99px;
  padding: 8px 18px;
  font-size: 0.85rem;
  font-family: var(--font);
  cursor: pointer;
  transition: all .2s;
}
.btn-toggle-translation:hover { color: var(--text); border-color: rgba(255,255,255,0.25); }
.card-translation {
  margin-top: 12px;
  background: rgba(46,196,182,0.08);
  border: 1px solid rgba(46,196,182,0.2);
  border-radius: 14px;
  padding: 14px 20px;
  animation: fadeSlideIn 0.25s ease;
}
.card-translation .tr-spanish { font-size: 1.1rem; font-weight: 700; color: var(--teal); }
.card-translation .tr-hint { font-size: 0.82rem; color: var(--muted); margin-top: 6px; }

/* ─── Card Exercise ──────────────────────────────────────── */
.exercise-zone {
  width: 100%;
  animation: fadeSlideIn 0.25s ease;
}
.exercise-prompt {
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 6px;
}
.exercise-word-target {
  text-align: center;
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 20px;
  color: var(--accent);
}
.exercise-word-target span { color: var(--text); }
.listen-btn-big {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  border: none;
  border-radius: 16px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  margin: 0 auto 20px;
  transition: transform .15s, opacity .15s;
}
.listen-btn-big:hover { transform: scale(1.04); opacity: 0.93; }

/* 2×2 Emoji Choice Grid */
.emoji-choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  width: 100%;
}
.emoji-choice-btn {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 20px;
  font-size: 3.2rem;
  padding: 20px 10px;
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform .15s, border-color .2s, background .15s;
  color: var(--text);
  font-family: var(--font);
}
.emoji-choice-btn .choice-label {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 8px;
  font-weight: 600;
}
.emoji-choice-btn:hover { border-color: var(--accent); transform: scale(1.04); background: var(--surface2); }
.emoji-choice-btn.correct {
  border-color: var(--success);
  background: rgba(0,214,143,0.12);
  animation: bounce-correct 0.4s ease;
}
.emoji-choice-btn.wrong {
  border-color: var(--error);
  background: rgba(255,59,80,0.12);
  animation: shake 0.35s ease;
}
@keyframes bounce-correct {
  0%, 100% { transform: scale(1); }
  40% { transform: scale(1.12); }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

/* 4-text choices (text_4) */
.text-choices {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}
.text-choice-btn {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font);
  color: var(--text);
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s;
}
.text-choice-btn:hover { border-color: var(--accent); background: var(--surface2); transform: translateX(4px); }
.text-choice-btn.correct { border-color: var(--success); background: rgba(0,214,143,0.1); }
.text-choice-btn.wrong { border-color: var(--error); background: rgba(255,59,80,0.1); animation: shake 0.35s ease; }

/* ─── Context Phase ──────────────────────────────────────── */
.context-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: center;
  margin-bottom: 16px;
}
.context-sentence {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 20px;
}

/* ─── Sentence Read Phase ────────────────────────────────── */
.sentence-zone {
  width: 100%;
  animation: fadeSlideIn 0.25s ease;
}
.sentence-label {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.sentence-tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 24px;
}

/* Emoji Token buttons (used in sentences + contexts) */
.emoji-token {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  font-size: 2rem;
  padding: 10px 12px;
  cursor: pointer;
  transition: transform .15s, border-color .2s, background .2s;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  position: relative;
  color: var(--text);
  font-family: var(--font);
}
.emoji-token .tok-word {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--muted);
  max-width: 60px;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.emoji-token:hover { border-color: var(--accent); transform: translateY(-3px); background: var(--surface2); }
.emoji-token:active { transform: scale(0.95); }
.emoji-token.highlight {
  border-color: var(--accent);
  background: rgba(244,162,97,0.12);
  box-shadow: 0 0 16px rgba(244,162,97,0.2);
  animation: pulse-highlight 1.5s ease-in-out infinite;
}
@keyframes pulse-highlight {
  0%, 100% { box-shadow: 0 0 16px rgba(244,162,97,0.2); }
  50% { box-shadow: 0 0 28px rgba(244,162,97,0.4); }
}

/* Literal text token badge — for [WORD] notation */
.tok-literal-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(124,58,237,0.25), rgba(46,196,182,0.15));
  border: 1px solid rgba(124,58,237,0.4);
  border-radius: 8px;
  padding: 2px 8px;
  font-size: 1.1rem;
  font-weight: 800;
  font-family: var(--font);
  color: var(--teal);
  letter-spacing: 0.05em;
  line-height: 1.4;
}
.emoji-token.literal-token {
  font-size: 1rem;
  padding: 8px 10px;
}
.emoji-token.literal-token .tok-literal-badge {
  font-size: 0.95rem;
}

/* ELS Method Explanation Panel */
.els-explanation {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 20px;
  margin-top: 20px;
  text-align: left;
  animation: fadeSlideIn 0.4s ease 0.2s both;
}
.els-exp-title {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  text-align: center;
}
.els-exp-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  padding: 10px 12px;
  background: var(--surface2);
  border-radius: 12px;
}
.els-exp-emoji {
  font-size: 1.6rem;
  flex-shrink: 0;
  min-width: 32px;
  text-align: center;
}
.els-exp-text {
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.5;
}
.els-exp-text strong { color: var(--teal); }
.els-exp-text em { color: var(--accent); font-style: normal; font-weight: 700; }

/* Play sentence button */
.btn-play-sentence {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 99px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  margin: 0 auto 20px;
  transition: border-color .15s, background .15s;
}
.btn-play-sentence:hover { border-color: var(--teal); background: rgba(46,196,182,0.08); }

/* ─── Sentence Quiz ──────────────────────────────────────── */
.quiz-zone {
  width: 100%;
  animation: fadeSlideIn 0.25s ease;
}

/* ─── Lesson Navigation ──────────────────────────────────── */
.lesson-nav {
  position: fixed;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 860px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px 20px;
  background: linear-gradient(0deg, var(--bg) 80%, rgba(13,12,30,0.5) 95%, transparent 100%);
  z-index: 100;
  box-sizing: border-box;
}
.nav-back {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 0.9rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: color .15s, border-color .15s;
  flex-shrink: 0;
}
.nav-back:hover { color: var(--text); border-color: rgba(255,255,255,0.25); }
.nav-skip {
  background: none;
  border: 1px dashed var(--border);
  color: var(--muted);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 0.85rem;
  font-family: var(--font);
  cursor: pointer;
  flex-shrink: 0;
  transition: color .15s;
}
.nav-skip:hover { color: var(--text); }
.nav-next {
  flex: 1;
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  border: none;
  color: #fff;
  border-radius: 14px;
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 800;
  font-family: var(--font);
  cursor: pointer;
  transition: transform .15s, opacity .15s;
  min-height: 50px;
}
.nav-next:hover { transform: scale(1.02); opacity: 0.95; }
.nav-next:active { transform: scale(0.98); }
.nav-next:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* ─── REVIEW VIEW ────────────────────────────────────────── */
.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}
.review-header h2 { font-size: 1.1rem; font-weight: 800; }
.review-header span { font-size: 0.8rem; color: var(--muted); }
/* Category groups in review */
.review-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 8px 0 80px;
}
.review-category { padding: 0; }
.review-cat-label {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  padding: 14px 24px 6px;
}
.review-cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 0 24px 12px;
}
.review-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 8px;
  text-align: center;
  cursor: pointer;
  transition: transform .15s, border-color .2s;
}
.review-card:hover { transform: scale(1.06); border-color: var(--accent); }
.review-card .rc-emoji { font-size: 2.2rem; display: block; margin-bottom: 6px; }
.review-card .rc-word { font-size: 0.8rem; font-weight: 700; }
.review-card .rc-ph { font-size: 0.65rem; color: var(--accent); margin-top: 3px; font-style: italic; }
.review-card .rc-es { font-size: 0.7rem; color: var(--teal); margin-top: 5px; display: none; }
.review-card.revealed { border-color: rgba(46,196,182,0.4); }
.review-card.revealed .rc-es { display: block; animation: fadeSlideIn 0.2s ease; }

/* ─── Emoji Tooltip ──────────────────────────────────────── */
.emoji-tooltip {
  position: fixed;
  z-index: 500;
  background: rgba(22, 21, 58, 0.96);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  border-radius: 16px;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 140px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  animation: fadeSlideIn 0.2s ease;
  pointer-events: auto;
}
.emoji-tooltip.hidden { display: none; }
.emoji-tooltip::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-top-color: rgba(22, 21, 58, 0.96);
  border-bottom: none;
}
.tt-emoji { font-size: 1.8rem; }
.tt-word { font-size: 1rem; font-weight: 800; }
.tt-ph { font-size: 0.78rem; color: var(--accent); font-style: italic; }
.tt-es { font-size: 0.82rem; color: var(--teal); }
.tt-es.hidden { display: none; }
.tt-actions { display: flex; gap: 6px; margin-top: 6px; }
.tt-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all .15s;
}
.tt-btn:hover { background: rgba(255, 255, 255, 0.2); transform: translateY(-2px); }
.tt-btn:active { transform: scale(0.95); }

/* ─── Confetti ───────────────────────────────────────────── */
#confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  overflow: hidden;
}
.confetti-particle {
  position: absolute;
  top: -10px;
  animation: confetti-fall linear forwards;
}
@keyframes confetti-fall {
  to { transform: translateY(110vh) translateX(var(--drift,0px)) rotate(var(--rot,360deg)); opacity: 0; }
}

/* ─── Misc ───────────────────────────────────────────────── */
.emoji-token.tok-alone { font-size: 3rem; padding: 16px 20px; }

/* Feedback overlay */
.feedback-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  pointer-events: none;
  animation: feedback-pop 0.5s ease forwards;
}
@keyframes feedback-pop {
  0% { opacity: 0; transform: scale(0.5); }
  50% { opacity: 1; transform: scale(1.2); }
  100% { opacity: 0; transform: scale(1.5); }
}

/* Completion card */
.complete-card {
  text-align: center;
  padding: 32px 24px;
  animation: fadeSlideIn 0.4s ease;
}
.complete-card .cc-emoji { font-size: 5rem; display: block; margin-bottom: 16px; }
.complete-card h2 { font-size: 1.8rem; font-weight: 900; margin-bottom: 8px; }
.complete-card p { color: var(--muted); font-size: 0.95rem; }
.complete-card .cc-xp {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent);
  margin: 16px 0;
}

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 4px; }

/* Responsive small screens */
@media (max-width: 400px) {
  .card-emoji-btn { font-size: 4.5rem; width: 130px; height: 130px; }
  .card-word { font-size: 2.2rem; }
  .emoji-choices { gap: 10px; }
  .emoji-choice-btn { font-size: 2.6rem; padding: 16px 8px 10px; }
}

/* ─── MODALS ─────────────────────────────────────────────── */
.settings-modal {
  border: none;
  background: var(--surface);
  color: var(--text);
  border-radius: 20px;
  padding: 24px;
  width: 90%;
  max-width: 400px;
  margin: auto;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  font-family: var(--font);
}
.settings-modal::backdrop {
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
}
.settings-modal h2 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  text-align: center;
}
.settings-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}
.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  font-weight: 600;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.setting-select {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 8px;
  font-family: var(--font);
}
.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.modal-actions button {
  padding: 14px;
  font-size: 1rem;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font);
}

/* ─── IMMERSION MODE ─────────────────────────────────────── */
body.immersion-active .card-translation,
body.immersion-active .tr-spanish,
body.immersion-active .tr-hint,
body.immersion-active #ctx-tr,
body.immersion-active #sent-tr,
body.immersion-active .tt-es,
body.immersion-active .wbw-es,
body.immersion-active .btn-toggle-translation {
  display: none !important;
}

/* ─── FIX OVERFLOW (multi-emoji card button) ─────────────── */
body .card-emoji-btn {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  max-width: 100%;
  box-sizing: border-box;
  text-align: center;
  line-height: 1.1;
  overflow: visible;   /* no cortar emojis dobles */
  height: auto;
  min-height: 120px;
  padding: 12px;
  font-size: 4.5rem;   /* reducido de 6rem para que 2 emojis quepan en 160px */
}

.card-emoji-view {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

/* ─── PROFILE VIEW ─────────────────────────────────────── */
.profile-hdr {
  text-align: center;
  margin-bottom: 24px;
}
.profile-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}
.profile-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 30px;
}
.stat-box {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
}
.stat-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}
.stat-val {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text);
}
.stat-lbl {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}
.calendar-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}
.calendar-container h3 {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 16px;
  text-align: center;
}
.calendar-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}
.cal-day {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--muted);
  border: 1px solid var(--border);
}
.cal-day.active {
  background: var(--teal);
  color: #fff;
  border-color: #00ddb0;
  font-weight: bold;
}

/* ═══════════════════════════════════════════════════
/* ═══════════════════════════════════════════════════
   CARD INTRO — context + speak-row helpers
═══════════════════════════════════════════════════ */
.ctx-label {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-align: center;
  margin: 20px 0 10px;
}
.ctx-tokens-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 12px;
}
.ctx-english {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  margin-bottom: 10px;
  line-height: 1.4;
}
.speak-buttons-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0 0 20px;
}
.speak-buttons-row .btn-speak-again {
  margin: 0;
  padding: 8px 14px;
  font-size: 0.82rem;
}
   EMOJI TOOLTIP — floating card on token tap
═══════════════════════════════════════════════════ */
#emoji-tooltip {
  position: fixed;
  z-index: 2000;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 18px;
  padding: 14px 16px 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.04);
  min-width: 160px;
  max-width: 260px;
  animation: fadeSlideIn 0.18s ease;
  pointer-events: auto;
}
#emoji-tooltip.hidden { display: none !important; }

.tt-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.tt-emoji-display {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
  transition: font-size 0.15s;
}
.tt-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.tt-word {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  font-family: var(--font);
}
.tt-ph {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--accent);
  font-family: var(--font);
}
.tt-es {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--teal);
  padding: 6px 0 8px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}
.tt-es.hidden { display: none; }
.tt-actions {
  display: flex;
  gap: 8px;
  margin-top: 2px;
}
.tt-btn {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 99px;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: background .15s, border-color .15s;
  white-space: nowrap;
}
.tt-btn:hover {
  background: rgba(124,58,237,0.15);
  border-color: var(--accent);
}

/* ═══════════════════════════════════════════════════
   CARD INTRO — improved translation reveal
═══════════════════════════════════════════════════ */
/* Spanish translation shown directly on card */
.card-translation {
  background: rgba(46,196,182,0.08);
  border: 1px solid rgba(46,196,182,0.25);
  border-radius: 14px;
  padding: 12px 20px;
  margin: 4px 0 16px;
  text-align: center;
  animation: fadeSlideIn 0.2s ease;
}
.tr-spanish {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--teal);
}
.tr-hint {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 6px;
}

/* "Ver significado" toggle button */
.btn-toggle-translation {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  color: var(--text);
  border-radius: 99px;
  padding: 9px 22px;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  margin: 0 auto 12px;
  transition: all .2s;
}
.btn-toggle-translation:hover {
  border-color: var(--teal);
  background: rgba(46,196,182,0.08);
  color: var(--teal);
}

/* Context sentence translation */
#intro-ctx-tr {
  background: rgba(124,58,237,0.08);
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: 12px;
  padding: 10px 16px;
  text-align: center;
  margin-bottom: 12px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--teal);
  animation: fadeSlideIn 0.2s ease;
}

/* ═══════════════════════════════════════════════════
   STUDY WORDS MODAL & CARDS
═══════════════════════════════════════════════════ */
.hdr-badge {
  font-size: 0.65rem;
  background: var(--purple, #6366f1);
  color: #fff;
  border-radius: 10px;
  padding: 1px 6px;
  font-weight: 700;
  vertical-align: middle;
}

#study-modal .modal-content {
  width: 95%;
  max-width: 580px;
}

.study-word-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface2, rgba(255,255,255,0.05));
  border: 1px solid var(--border, rgba(255,255,255,0.1));
  border-radius: 14px;
  padding: 12px 14px;
  gap: 12px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.study-word-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}

.sw-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.sw-emoji {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.sw-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.sw-word-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.sw-word {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text, #fff);
}

.sw-ph {
  font-size: 0.8rem;
  color: var(--muted, #94a3b8);
  font-family: monospace;
}

.sw-es {
  font-size: 0.85rem;
  color: var(--teal, #2ec4b6);
  margin-top: 2px;
}

.sw-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.sw-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text, #fff);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.sw-btn:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: #6366f1;
}

.sw-btn.del:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: #ef4444;
  color: #ef4444;
}

.tt-btn.saved {
  background: rgba(234, 179, 8, 0.2);
  border-color: #eab308;
  color: #facc15;
}

/* ─── CONTEXTUAL POS POLYSEMY SENSES ─────────────────────── */
.tt-senses {
  width: 100%;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border, rgba(255,255,255,0.12));
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.tt-senses.hidden { display: none; }
.tt-sense-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent, #38bdf8);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}
.tt-sense-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: var(--surface2, rgba(255,255,255,0.04));
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.08);
}
.tt-sense-emoji {
  font-size: 1.1rem;
  line-height: 1.2;
  flex-shrink: 0;
}
.tt-sense-desc {
  color: var(--muted, #94a3b8);
  font-size: 0.74rem;
  line-height: 1.35;
}
.tt-sense-desc strong {
  color: #fff;
}
.sw-poly-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 99px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent, #38bdf8);
  border: 1px solid rgba(56, 189, 248, 0.35);
  margin-left: 6px;
}