/* ===========================
   WORDBOOK — styles.css  v5
   =========================== */
:root {
  --bg:          #fdf6f0;
  --surface:     #ffffff;
  --surface2:    #fef0e7;
  --border:      #f0d9c8;
  --accent:      #e8816a;
  --accent-dim:  rgba(232,129,106,.12);
  --accent-soft: #f5c4b8;
  --text:        #2d1f1a;
  --text-dim:    #7a5c52;
  --text-muted:  #b89b92;
  --danger:      #d95f4b;
  --success:     #6abf8a;
  --radius:      16px;
  --radius-sm:   10px;
  --nav-h:       64px;
  --gh:          52px; /* global header height */
  --font-display:'Playfair Display',serif;
  --font-body:   'DM Sans',sans-serif;
  --shadow:      0 2px 16px rgba(180,100,80,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--bg)}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);
  min-height:100vh;padding-top:var(--gh);padding-bottom:var(--nav-h);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}

/* ── GLOBAL HEADER ──────────────────────────────── */
.global-header{
  position:fixed;top:0;left:0;right:0;height:var(--gh);
  background:var(--surface);border-bottom:1.5px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;z-index:200;box-shadow:0 2px 8px rgba(180,100,80,.06);
}
.global-date{font-family:var(--font-display);font-size:14px;font-weight:700;color:var(--text)}
.global-countdown{font-size:11px;font-weight:600;color:var(--accent);text-align:right;line-height:1.4}

/* ── POPUP ──────────────────────────────────────── */
.popup-overlay{position:fixed;inset:0;background:rgba(45,31,26,.55);
  backdrop-filter:blur(4px);z-index:999;display:flex;align-items:center;
  justify-content:center;padding:24px;animation:fadeIn .3s ease}
.popup-overlay.hidden{display:none}
.popup-card{background:var(--surface);border-radius:24px;padding:36px 28px;
  text-align:center;max-width:340px;width:100%;
  box-shadow:0 24px 60px rgba(180,100,80,.2);animation:slideUp .35s ease}
.popup-emoji{font-size:48px;margin-bottom:16px}
.popup-title{font-family:var(--font-display);font-size:20px;font-weight:700;
  color:var(--text);margin-bottom:20px;line-height:1.3}
.popup-countdown{font-family:var(--font-display);font-size:22px;font-weight:700;
  color:var(--accent);line-height:1.3;margin-bottom:4px}
.popup-sub{font-size:13px;color:var(--text-muted);margin-bottom:28px}

/* ── TABS ───────────────────────────────────────── */
.tab{display:none;min-height:calc(100vh - var(--nav-h) - var(--gh))}
.tab.active{display:block}

/* ── APP HEADER (inside tabs) ───────────────────── */
.app-header{height:52px;display:flex;align-items:center;
  justify-content:space-between;padding:0 20px;
  border-bottom:1px solid var(--border);
  position:sticky;top:var(--gh);background:var(--bg);z-index:10}
.app-logo{font-family:var(--font-display);font-size:18px;font-weight:700;color:var(--accent)}
.back-btn{background:none;border:none;font-family:var(--font-body);
  font-size:14px;font-weight:600;color:var(--text-dim);cursor:pointer}
.sync-status{font-size:11px;color:var(--text-muted);transition:color .3s}
.sync-status.online{color:var(--success)}
.sync-status.syncing{color:var(--accent);animation:pulse 1s infinite}
.sync-btn{background:none;border:1px solid var(--border);color:var(--text-dim);
  width:32px;height:32px;border-radius:var(--radius-sm);cursor:pointer;font-size:15px;
  display:flex;align-items:center;justify-content:center}

/* ── SECTIONS ───────────────────────────────────── */
.section{padding:16px 20px 0}
.section-label{font-size:10px;font-weight:600;letter-spacing:2px;
  color:var(--text-muted);text-transform:uppercase;margin-bottom:10px}

/* ── ADD FORM ───────────────────────────────────── */
.add-hero{padding:20px 20px 0}
.add-hero-title{font-family:var(--font-display);font-size:26px;font-weight:700;
  color:var(--text);line-height:1.2;margin-bottom:4px}
.add-hero-sub{font-size:13px;color:var(--text-muted);margin-bottom:20px}
.type-selector{display:flex;gap:8px;margin-bottom:18px}
.type-btn{flex:1;padding:12px;background:var(--surface);border:2px solid var(--border);
  border-radius:var(--radius);font-family:var(--font-body);font-size:14px;
  font-weight:600;color:var(--text-dim);cursor:pointer;transition:all .15s;text-align:center}
.type-btn.active{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}
.form-group{margin-bottom:14px}
.form-label{display:block;font-size:11px;font-weight:600;letter-spacing:1.5px;
  color:var(--text-muted);text-transform:uppercase;margin-bottom:6px}
.form-input{width:100%;background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:13px 15px;font-family:var(--font-body);
  font-size:15px;color:var(--text);outline:none;
  transition:border-color .2s,box-shadow .2s;box-shadow:var(--shadow)}
.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}
.form-input::placeholder{color:var(--text-muted)}
.form-textarea{resize:vertical;min-height:80px}
.quick-list-header{display:flex;align-items:center;gap:8px;
  padding:20px 0 10px;border-top:1px solid var(--border);margin-top:16px}
.quick-list-header .section-label{margin-bottom:0;flex:1}

/* ── BUTTONS ────────────────────────────────────── */
.btn-primary{width:100%;padding:16px;background:var(--accent);border:none;
  border-radius:var(--radius);font-family:var(--font-body);font-size:15px;
  font-weight:700;color:#fff;cursor:pointer;transition:opacity .2s,transform .1s;
  box-shadow:0 4px 14px rgba(232,129,106,.35);margin-top:6px}
.btn-primary:active{opacity:.88;transform:scale(.99)}
.btn-outline{width:100%;padding:14px;background:transparent;
  border:2px solid var(--accent);border-radius:var(--radius);
  font-family:var(--font-body);font-size:14px;font-weight:700;
  color:var(--accent);cursor:pointer;transition:background .15s;margin-top:6px}
.btn-outline:active{background:var(--accent-dim)}
.btn-ghost{width:100%;padding:12px;background:transparent;border:none;
  font-family:var(--font-body);font-size:14px;font-weight:600;
  color:var(--text-muted);cursor:pointer;margin-top:2px;
  text-decoration:underline;text-underline-offset:3px}
.save-feedback{margin-top:12px;padding:12px 16px;border-radius:var(--radius-sm);
  font-size:13px;text-align:center;border:1.5px solid transparent;font-weight:500}
.save-feedback.ok{border-color:var(--success);color:var(--success);background:rgba(106,191,138,.08)}
.save-feedback.err{border-color:var(--danger);color:var(--danger);background:rgba(217,95,75,.08)}

/* ── WORD LIST ──────────────────────────────────── */
.word-list{list-style:none;display:flex;flex-direction:column;gap:8px}
.word-list li{background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:12px 14px;
  display:flex;justify-content:space-between;align-items:flex-start;gap:10px;
  box-shadow:var(--shadow)}
.word-list li.pending{border-left:3px solid var(--accent-soft)}
.word-list-info{flex:1;min-width:0}
.word-list-word{font-family:var(--font-display);font-size:15px;font-weight:700;
  color:var(--text);margin-bottom:2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.word-list-meta{font-size:11px;font-weight:500;color:var(--text-muted)}
.word-list-note{font-size:12px;color:var(--text-dim);margin-top:4px;line-height:1.5}
.delete-btn{background:none;border:none;color:var(--text-muted);
  cursor:pointer;font-size:15px;padding:2px 4px;line-height:1;flex-shrink:0}
.delete-btn:hover{color:var(--danger)}
.empty-state{text-align:center;color:var(--text-muted);font-size:13px;padding:32px 0}

/* Fase badge */
.fase-badge{display:inline-block;padding:2px 8px;border-radius:99px;
  font-size:10px;font-weight:700;margin-left:6px}
.fase-0{background:var(--surface2);color:var(--text-muted)}
.fase-1{background:#fff3cd;color:#856404}
.fase-2{background:#cff4fc;color:#0c5460}
.fase-3{background:#d1ecf1;color:#0c5460}
.fase-4{background:#d4edda;color:#155724}
.fase-duda{background:#f8d7da;color:#721c24}

/* ── TINDER WORD ────────────────────────────────── */
.tinder-body{padding:16px 20px;display:flex;flex-direction:column;
  min-height:calc(100vh - var(--nav-h) - var(--gh));gap:16px}
.tinder-header-info .section-label{margin-bottom:0}
.tinder-stack{flex:1;display:flex;align-items:center;justify-content:center;
  position:relative;min-height:260px}
.tinder-card{width:100%;max-width:340px;min-height:220px;
  background:var(--surface);border:1.5px solid var(--border);
  border-radius:24px;padding:32px 28px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  box-shadow:0 8px 32px rgba(180,100,80,.15);
  position:relative;overflow:hidden;cursor:grab;
  transition:transform .15s,box-shadow .15s;user-select:none}
.tinder-card.dragging{cursor:grabbing}
.tinder-card.swipe-right{animation:swipeRight .4s ease forwards}
.tinder-card.swipe-left{animation:swipeLeft .4s ease forwards}
.tinder-card.swipe-up{animation:swipeUp .4s ease forwards}
.tinder-word{font-family:var(--font-display);font-size:40px;font-weight:700;
  color:var(--accent);text-align:center;line-height:1.1;margin-bottom:12px}
.tinder-hint{font-size:12px;color:var(--text-muted);text-align:center}
.tinder-stamp{position:absolute;top:24px;padding:6px 16px;
  border-radius:8px;font-size:18px;font-weight:800;
  border:3px solid;transform:rotate(-15deg);opacity:0;transition:opacity .15s}
.stamp-yes{left:16px;color:var(--success);border-color:var(--success);transform:rotate(-15deg)}
.stamp-no{right:16px;color:var(--danger);border-color:var(--danger);transform:rotate(15deg)}
.stamp-super{left:50%;transform:translateX(-50%) rotate(-5deg);
  color:var(--accent);border-color:var(--accent)}
.tinder-stamp.visible{opacity:1}
.tinder-instructions{display:flex;justify-content:space-around;padding:0 8px}
.tinder-inst-item{display:flex;flex-direction:column;align-items:center;gap:4px;
  font-size:11px;font-weight:600;color:var(--text-muted)}
.tinder-inst-icon{font-size:22px;line-height:1}
.tinder-btns{display:flex;justify-content:center;gap:20px}
.tinder-btn{width:60px;height:60px;border-radius:50%;border:2px solid;
  font-size:22px;cursor:pointer;background:var(--surface);
  box-shadow:0 4px 12px rgba(0,0,0,.1);transition:transform .1s}
.tinder-btn:active{transform:scale(.92)}
.tinder-btn-no{border-color:var(--danger);color:var(--danger)}
.tinder-btn-super{border-color:var(--accent);color:var(--accent)}
.tinder-btn-yes{border-color:var(--success);color:var(--success)}
.tinder-result{text-align:center;padding:20px}
.tinder-result-word{font-family:var(--font-display);font-size:28px;
  font-weight:700;color:var(--accent);margin-bottom:8px}
.tinder-result-meaning{font-size:14px;color:var(--text-dim);
  line-height:1.6;margin-bottom:16px}
.tinder-done{text-align:center;padding:40px 20px}
.tinder-done-emoji{font-size:48px;margin-bottom:16px}
.tinder-done-title{font-family:var(--font-display);font-size:22px;
  font-weight:700;color:var(--text);margin-bottom:8px}
.tinder-done-sub{font-size:13px;color:var(--text-muted)}

/* ── CALENDAR ───────────────────────────────────── */
.calendar-section{padding:16px 20px 12px;
  background:var(--surface);margin-bottom:0;
  border-bottom:1.5px solid var(--border)}
.calendar-header-row{display:flex;align-items:center;
  justify-content:space-between;margin-bottom:12px}
.calendar-month-title{font-family:var(--font-display);
  font-size:16px;font-weight:700;color:var(--text)}
.cal-nav{background:none;border:1.5px solid var(--border);
  width:32px;height:32px;border-radius:var(--radius-sm);
  font-size:18px;color:var(--text-dim);cursor:pointer}
.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;
  margin-bottom:10px}
.cal-day-name{font-size:10px;font-weight:700;color:var(--text-muted);
  text-align:center;padding:4px 0;text-transform:uppercase}
.cal-day{aspect-ratio:1;border-radius:8px;display:flex;align-items:center;
  justify-content:center;font-size:12px;font-weight:600;color:var(--text-dim);
  position:relative}
.cal-day.today{border:2px solid var(--accent);color:var(--accent)}
.cal-day.correct{background:var(--success);color:#fff}
.cal-day.wrong{background:var(--danger);color:#fff}
.cal-day.missed{background:var(--border);color:var(--text-muted)}
.cal-day.future{color:var(--border)}
.calendar-legend{display:flex;gap:16px;justify-content:center}
.leg-item{display:flex;align-items:center;gap:5px;
  font-size:11px;font-weight:500;color:var(--text-muted)}
.leg-dot{width:10px;height:10px;border-radius:50%}

/* ── PREGUNTA ───────────────────────────────────── */
.pregunta-body{padding:16px 20px 0}
.pregunta-card{background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius);padding:20px;margin-bottom:14px;box-shadow:var(--shadow)}
.pregunta-label{font-size:10px;font-weight:600;letter-spacing:2px;
  color:var(--text-muted);text-transform:uppercase;margin-bottom:10px}
.pregunta-sentence{font-family:var(--font-display);font-size:18px;
  font-weight:400;line-height:1.5;color:var(--text)}
.pregunta-sentence strong{color:var(--accent)}
.pregunta-options{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.pregunta-option{background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:14px 16px;
  display:flex;align-items:center;gap:12px;
  font-family:var(--font-body);font-size:14px;color:var(--text);
  cursor:pointer;transition:border-color .15s,background .15s;
  box-shadow:var(--shadow);text-align:left;width:100%}
.pregunta-option .opt-letter{font-size:11px;font-weight:700;
  color:var(--text-muted);min-width:16px;flex-shrink:0}
.pregunta-option.correct{border-color:var(--success);background:rgba(106,191,138,.1)}
.pregunta-option.wrong{border-color:var(--danger);background:rgba(217,95,75,.08)}
.pregunta-option:disabled{cursor:default}
.pregunta-feedback{padding:14px 16px;border-radius:var(--radius-sm);
  font-size:13px;line-height:1.6;font-weight:500;
  border:1.5px solid var(--border);margin-bottom:10px}
.pregunta-feedback.correct-fb{border-color:var(--success);color:var(--success);
  background:rgba(106,191,138,.08)}
.pregunta-feedback.wrong-fb{border-color:var(--danger);color:var(--text-dim);
  background:rgba(217,95,75,.05)}
.pregunta-more{margin-top:6px;padding-bottom:20px}
.pregunta-more-label{font-size:10px;font-weight:600;letter-spacing:2px;
  color:var(--text-muted);text-transform:uppercase;margin-bottom:10px}
.other-option{background:var(--surface2);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:12px 14px;margin-bottom:8px}
.other-option-letter{font-size:10px;font-weight:700;color:var(--text-muted);margin-bottom:3px}
.other-option-text{font-size:13px;color:var(--text);margin-bottom:4px}
.other-option-why{font-size:12px;color:var(--text-dim);line-height:1.5}
.already-done{text-align:center;padding:40px 20px}
.already-emoji{font-size:48px;margin-bottom:16px}
.already-title{font-family:var(--font-display);font-size:20px;
  font-weight:700;color:var(--text);margin-bottom:8px}
.already-sub{font-size:14px;color:var(--text-muted)}

/* ── REPASO ─────────────────────────────────────── */
.repaso-body{padding:20px 20px 0}
.repaso-header{margin-bottom:20px}
.repaso-list-section{margin-top:24px;padding-bottom:20px}
.repaso-item{background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:12px 14px;margin-bottom:8px;
  display:flex;justify-content:space-between;align-items:center;
  box-shadow:var(--shadow)}
.repaso-item-word{font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--text)}
.repaso-item-info{font-size:11px;color:var(--text-muted);margin-top:2px}

/* ── RESUMEN ────────────────────────────────────── */
.resumen-body{padding:20px 20px 0}
.periodo-selector{display:flex;gap:6px;margin:16px 0;overflow-x:auto;
  scrollbar-width:none;-webkit-overflow-scrolling:touch}
.periodo-selector::-webkit-scrollbar{display:none}
.periodo-btn{flex-shrink:0;padding:7px 14px;background:var(--surface);
  border:1.5px solid var(--border);border-radius:99px;
  font-size:12px;font-weight:600;color:var(--text-dim);cursor:pointer;
  white-space:nowrap;transition:all .15s}
.periodo-btn.active{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}
.resumen-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:4px}
.stat-card{background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:16px 12px;text-align:center;
  box-shadow:var(--shadow)}
.stat-num{font-family:var(--font-display);font-size:28px;font-weight:700;
  color:var(--accent);line-height:1}
.stat-label{font-size:10px;font-weight:600;color:var(--text-muted);
  margin-top:4px;text-transform:uppercase;letter-spacing:1px}
.fases-bars{display:flex;flex-direction:column;gap:8px;padding-bottom:20px}
.fase-bar-item{display:flex;align-items:center;gap:10px}
.fase-bar-label{font-size:12px;font-weight:600;color:var(--text-dim);width:60px;flex-shrink:0}
.fase-bar-track{flex:1;height:10px;background:var(--border);border-radius:99px;overflow:hidden}
.fase-bar-fill{height:100%;border-radius:99px;background:var(--accent);transition:width .4s}
.fase-bar-count{font-size:12px;font-weight:600;color:var(--text-dim);width:24px;text-align:right}

/* ── FULLSCREEN SCREENS ─────────────────────────── */
.fullscreen-screen{display:none;position:fixed;inset:0;background:var(--bg);
  z-index:50;overflow:hidden}
.fullscreen-screen.active{display:block}
.fullscreen-bg{width:100%;height:100%;object-fit:cover;object-position:top}
.fullscreen-tap-area{position:absolute;inset:0;display:flex;
  align-items:flex-end;justify-content:center;
  padding-bottom:calc(var(--nav-h) + 32px);cursor:pointer}
.tap-hint{background:rgba(255,255,255,.85);backdrop-filter:blur(8px);
  border:1.5px solid var(--border);border-radius:99px;padding:12px 28px;
  font-size:14px;font-weight:600;color:var(--text-dim);animation:pulse 2s infinite}
.pista1-bottom{position:absolute;bottom:0;left:0;right:0;
  background:linear-gradient(to bottom,transparent,var(--bg) 30%);
  padding:60px 24px calc(var(--nav-h) + 24px)}
.pista1-label{font-size:10px;font-weight:600;letter-spacing:2px;
  color:var(--text-muted);text-transform:uppercase;margin-bottom:8px}
.pista1-text{font-family:var(--font-display);font-size:17px;font-style:italic;
  color:var(--text);line-height:1.5;margin-bottom:18px}
.guess-body{padding:28px 24px;display:flex;flex-direction:column;
  align-items:center;min-height:calc(100vh - 52px - var(--nav-h));
  justify-content:center}
.guess-word{font-family:var(--font-display);font-size:44px;font-weight:700;
  color:var(--accent);text-align:center;margin-bottom:10px;line-height:1.1}
.guess-question{font-size:14px;color:var(--text-muted);
  text-align:center;margin-bottom:28px}
.guess-actions{width:100%;display:flex;flex-direction:column;gap:4px}
.pista2-box{background:var(--surface2);border:1.5px solid var(--accent-soft);
  border-radius:var(--radius-sm);padding:14px;margin-top:6px;margin-bottom:2px}
.pista2-text{font-family:var(--font-display);font-size:14px;font-style:italic;
  color:var(--text-dim);line-height:1.6}
.ficha-body{padding:18px 18px calc(var(--nav-h) + 18px);overflow-y:auto}
.ficha-word-card{background:var(--accent);border-radius:var(--radius);
  padding:26px 22px;margin-bottom:18px;text-align:center;
  box-shadow:0 8px 24px rgba(232,129,106,.3)}
.ficha-word{font-family:var(--font-display);font-size:38px;font-weight:700;
  color:#fff;line-height:1.1;margin-bottom:6px}
.ficha-pronunciation{font-size:15px;color:rgba(255,255,255,.8)}
.accordion{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.accordion-item{background:var(--surface);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow)}
.accordion-header{width:100%;padding:14px 16px;background:none;border:none;
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--font-body);font-size:14px;font-weight:600;
  color:var(--text);cursor:pointer;text-align:left}
.accordion-arrow{font-size:18px;color:var(--text-muted);
  transition:transform .2s;display:inline-block}
.accordion-item.open .accordion-arrow{transform:rotate(90deg)}
.accordion-body{padding:4px 16px 16px;font-size:13px;color:var(--text-dim);
  line-height:1.7;border-top:1px solid var(--border)}
.accordion-body.hidden{display:none}

/* ── BOTTOM NAV ─────────────────────────────────── */
.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:var(--nav-h);
  background:var(--surface);border-top:1.5px solid var(--border);
  display:flex;z-index:100;box-shadow:0 -4px 20px rgba(180,100,80,.08)}
.nav-btn{flex:1;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:3px;background:none;border:none;
  color:var(--text-muted);font-family:var(--font-body);
  font-size:10px;font-weight:600;cursor:pointer;transition:color .15s}
.nav-btn.active{color:var(--accent)}
.nav-icon{font-size:16px;line-height:1}

/* ── UTILS ──────────────────────────────────────── */
.hidden{display:none !important}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes swipeRight{to{transform:translateX(120%) rotate(20deg);opacity:0}}
@keyframes swipeLeft{to{transform:translateX(-120%) rotate(-20deg);opacity:0}}
@keyframes swipeUp{to{transform:translateY(-120%);opacity:0}}

@supports (padding-bottom: env(safe-area-inset-bottom)){
  .bottom-nav{padding-bottom:env(safe-area-inset-bottom);
    height:calc(var(--nav-h) + env(safe-area-inset-bottom))}
  body{padding-bottom:calc(var(--nav-h) + env(safe-area-inset-bottom))}
}