/* ─── RESET & TOKENS ──────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --bg0: #120d04;
  --bg1: #1c1508;
  --bg2: #2a1f0e;
  --bg3: #3d2e14;
  --gold: #c9922a;
  --gold-l: #e8b84b;
  --gold-p: #f5d98a;
  --red: #8b1a1a;
  --stone: #8a7a65;
  --stone-l: #b5a48a;
  --text: #f0e6cc;
  --text-s: #c4a96e;
  --text-m: #8a7055;
  --bdr: rgba(201, 146, 42, 0.22);
  --bdrb: rgba(201, 146, 42, 0.55);
  --r8: 8px;
  --r12: 12px;
  --r16: 16px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bot: env(safe-area-inset-bottom, 0px);
}

html, body {
  height: 100%;
  background: var(--bg0);
  font-family: 'Crimson Text', Georgia, serif;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

button, input { font-family: inherit; }
button { cursor: pointer; border: none; background: none; }
input  { outline: none; }


/* ─── LAYOUT ──────────────────────────────────────── */
#app {
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  background: radial-gradient(ellipse 100% 60% at 50% 0%, #2a1606 0%, var(--bg0) 65%);
}

#phone {
  width: 100%;
  max-width: 430px;
  min-height: 100dvh;
  background: var(--bg1);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

@media (min-width: 460px) {
  #phone {
    border-left: 1px solid var(--bdr);
    border-right: 1px solid var(--bdr);
    box-shadow: 0 0 80px #000a;
  }
}

/* noise overlay */
#phone::after {
  content: '';
  pointer-events: none;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  height: 100dvh;
  z-index: 999;
  opacity: .18;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}


/* ─── SCREENS ─────────────────────────────────────── */
.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.screen.hidden { display: none; }


/* ─── HEADER ──────────────────────────────────────── */
.hdr {
  padding: calc(var(--safe-top) + 36px) 24px 14px;
  background: linear-gradient(180deg, #08060200, var(--bg1));
  border-bottom: 1px solid var(--bdr);
  text-align: center;
  flex-shrink: 0;
  position: relative;
}

.hdr::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.hdr-title {
  font-family: 'Cinzel Decorative', serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--gold-l);
  letter-spacing: 2px;
  text-shadow: 0 0 24px rgba(201, 146, 42, .45);
}

.hdr-sub {
  font-family: 'Cinzel', serif;
  font-size: 9px;
  letter-spacing: 4px;
  color: var(--text-m);
  margin-top: 3px;
  text-transform: uppercase;
}

.hdr-orn {
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 8px;
  margin-top: 5px;
  opacity: .5;
}


/* ─── SCROLL BODY ─────────────────────────────────── */
.body {
  flex: 1;
  overflow-y: auto;
  padding-bottom: calc(68px + var(--safe-bot));
  scrollbar-width: none;
}

.body::-webkit-scrollbar { display: none; }


/* ─── BOTTOM NAV ──────────────────────────────────── */
#bnav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  background: linear-gradient(0deg, #08060200, var(--bg1));
  border-top: 1px solid var(--bdr);
  display: flex;
  z-index: 100;
  padding: 6px 0 calc(6px + var(--safe-bot));
}

.ni {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px;
  cursor: pointer;
  transition: opacity .15s;
}

.ni-icon { font-size: 19px; line-height: 1; }

.ni-lbl {
  font-family: 'Cinzel', serif;
  font-size: 8px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-m);
  transition: color .15s;
}

.ni.active .ni-lbl  { color: var(--gold-l); }
.ni.active .ni-icon { filter: drop-shadow(0 0 5px rgba(232, 184, 75, .65)); }


/* ─── SHARED COMPONENTS ───────────────────────────── */
.sec-lbl {
  font-family: 'Cinzel', serif;
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-m);
  padding: 18px 24px 10px;
}

.orn {
  text-align: center;
  color: var(--gold);
  opacity: .28;
  font-size: 13px;
  letter-spacing: 6px;
  padding: 6px 0;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: 'Cinzel', serif;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-m);
  cursor: pointer;
  margin-bottom: 18px;
}

.gold-btn {
  font-family: 'Cinzel', serif;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--gold), #9a6a18);
  border-radius: var(--r8);
  color: var(--bg0);
  font-weight: 700;
  transition: transform .15s, opacity .15s;
}

.gold-btn:active { transform: scale(.97); }
.gold-btn.full   { width: 100%; padding: 14px; }


/* ─── STAT STRIP ──────────────────────────────────── */
.stats {
  display: flex;
  gap: 10px;
  padding: 0 24px 4px;
}

.stat {
  flex: 1;
  background: var(--bg2);
  border: 1px solid var(--bdr);
  border-radius: var(--r8);
  padding: 11px 8px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.stat::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: .5;
}

.stat-v {
  font-family: 'Cinzel Decorative', serif;
  font-size: 20px;
  color: var(--gold-l);
  line-height: 1;
  text-shadow: 0 0 10px rgba(201, 146, 42, .3);
}

.stat-l {
  font-family: 'Cinzel', serif;
  font-size: 7px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-m);
  margin-top: 4px;
}


/* ─── PACK LIST ───────────────────────────────────── */
.pack-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: 0 24px;
}

.pack-card {
  background: var(--bg2);
  border: 1px solid var(--bdrb);
  border-radius: var(--r12);
  padding: 15px 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 15px;
  position: relative;
  overflow: hidden;
  transition: transform .15s;
}

.pack-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 146, 42, .05), transparent 55%);
  pointer-events: none;
}

.pack-card:active { transform: scale(.985); }

.pack-icon-box {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--bg3), var(--bg2));
  border: 1px solid var(--bdrb);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.pack-info    { flex: 1; min-width: 0; }

.pack-name {
  font-family: 'Cinzel', serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.pack-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 5px;
}

.pack-count {
  font-family: 'Cinzel', serif;
  font-size: 9px;
  color: var(--stone-l);
  letter-spacing: .5px;
}

.pack-bar {
  flex: 1;
  height: 3px;
  background: rgba(255, 255, 255, .07);
  border-radius: 2px;
  overflow: hidden;
}

.pack-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-l));
  border-radius: 2px;
  transition: width .4s;
}

.pack-arrow {
  color: var(--gold);
  font-size: 18px;
  opacity: .55;
}


/* ─── MODE SELECT ─────────────────────────────────── */
.pack-summary-card {
  background: var(--bg2);
  border: 1px solid var(--bdrb);
  border-radius: var(--r12);
  padding: 16px;
  display: flex;
  gap: 13px;
  align-items: center;
  margin-bottom: 22px;
}

.pack-summary-name {
  font-family: 'Cinzel', serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--gold-l);
}

.pack-summary-meta {
  font-size: 12px;
  color: var(--text-m);
  font-style: italic;
  margin-top: 2px;
}

.mode-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.mode-card {
  background: var(--bg2);
  border: 1px solid var(--bdr);
  border-radius: var(--r12);
  padding: 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 15px;
  position: relative;
  overflow: hidden;
  transition: transform .15s;
}

.mode-card.hl { border-color: rgba(201, 146, 42, .5); }

.mode-card.hl::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 146, 42, .07), transparent 55%);
  pointer-events: none;
}

.mode-card:active { transform: scale(.985); }

.mode-name {
  font-family: 'Cinzel', serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.mode-desc {
  font-size: 12px;
  color: var(--text-m);
  font-style: italic;
  margin-top: 3px;
  line-height: 1.4;
}


/* ─── PROGRESS BAR ROW ────────────────────────────── */
.prog-row {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 14px;
}

.prog-track {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, .07);
  border-radius: 2px;
  overflow: hidden;
}

.prog-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-l));
  border-radius: 2px;
  transition: width .35s;
}

.prog-counter {
  font-family: 'Cinzel', serif;
  font-size: 9px;
  color: var(--text-m);
  letter-spacing: 1px;
  white-space: nowrap;
}

.cat-tag {
  font-family: 'Cinzel', serif;
  font-size: 8px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(201, 146, 42, .1);
  border: 1px solid var(--bdr);
  border-radius: 4px;
  padding: 3px 8px;
  margin-bottom: 11px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.src-tag {
  color: var(--text-m);
  margin-left: 3px;
}


/* ─── FLASH CARD ──────────────────────────────────── */
#fc-screen { padding: 14px 22px; }

.fc-wrap {
  perspective: 1300px;
  cursor: pointer;
  margin-bottom: 18px;
}

.fc-inner {
  width: 100%;
  height: min(320px, 42vw, 280px);
  position: relative;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.4, 0, .2, 1);
}

.fc-inner.flipped { transform: rotateY(180deg); }

.face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: var(--bg2);
  border: 1px solid var(--bdrb);
  border-radius: var(--r16);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 26px 24px;
  text-align: center;
  overflow: hidden;
}

.face::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.face::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: .35;
}

.face-back { transform: rotateY(180deg); }

.face-lbl {
  font-family: 'Cinzel', serif;
  font-size: 8px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-m);
  position: absolute;
  top: 13px;
}

.card-deco {
  font-size: 28px;
  margin-bottom: 10px;
  opacity: .65;
}

.card-q {
  font-family: 'Cinzel', serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.card-a {
  font-size: 14px;
  color: var(--text-s);
  line-height: 1.65;
}

.card-a strong {
  color: var(--gold-l);
  font-weight: 600;
}

.flip-hint {
  font-family: 'Cinzel', serif;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-m);
  text-align: center;
  margin-bottom: 14px;
  opacity: .65;
}

.rating-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.r-btn {
  padding: 12px 4px;
  border: 1px solid;
  border-radius: 9px;
  font-family: 'Cinzel', serif;
  font-size: 9px;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-align: center;
  transition: transform .15s;
}

.r-btn:active { transform: scale(.95); }
.r-emoji      { font-size: 15px; display: block; margin-bottom: 3px; }

.r-btn.again { background: rgba(139, 26, 26, .2);   border-color: var(--red);              color: #e88; }
.r-btn.hard  { background: rgba(160, 100, 20, .15); border-color: rgba(160, 100, 20, .5);  color: #d4a; }
.r-btn.good  { background: rgba(30, 100, 50, .2);   border-color: rgba(30, 120, 60, .5);   color: #8d8; }
.r-btn.easy  { background: rgba(20, 80, 120, .2);   border-color: rgba(30, 100, 160, .5);  color: #8bf; }


/* ─── QUIZ ────────────────────────────────────────── */
#quiz-screen { padding: 14px 22px; }

.quiz-qcard {
  background: var(--bg2);
  border: 1px solid var(--bdrb);
  border-radius: var(--r16);
  padding: 22px;
  margin-bottom: 18px;
  position: relative;
  overflow: hidden;
}

.quiz-qcard::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.quiz-qlabel {
  font-family: 'Cinzel', serif;
  font-size: 8px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-m);
  margin-bottom: 9px;
}

.quiz-q {
  font-family: 'Cinzel', serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.quiz-opts {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.quiz-opt {
  background: var(--bg2);
  border: 1px solid var(--bdr);
  border-radius: 10px;
  padding: 13px 15px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.4;
  transition: border-color .15s;
}

.quiz-opt.correct { background: rgba(30, 100, 50, .25);  border-color: rgba(30, 160, 80, .7);  color: #aef; }
.quiz-opt.wrong   { background: rgba(139, 26, 26, .25);  border-color: rgba(180, 40, 40, .7);  color: #faa; }
.quiz-opt.dimmed  { opacity: .32; }

.opt-letter {
  width: 24px;
  height: 24px;
  background: var(--bg3);
  border: 1px solid var(--bdrb);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Cinzel', serif;
  font-size: 10px;
  font-weight: 600;
  color: var(--gold);
  flex-shrink: 0;
}

.quiz-fb {
  margin-top: 13px;
  padding: 12px 15px;
  border-radius: 9px;
  font-size: 13px;
  line-height: 1.5;
  font-style: italic;
}

.quiz-fb.ok  { background: rgba(30, 100, 50, .2);   border: 1px solid rgba(30, 160, 80, .4);  color: #cfc; }
.quiz-fb.bad { background: rgba(139, 26, 26, .2);   border: 1px solid rgba(180, 40, 40, .4);  color: #fcc; }

.next-btn {
  margin-top: 14px;
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--gold), #9a6a18);
  border-radius: 10px;
  font-family: 'Cinzel', serif;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--bg0);
  font-weight: 700;
}


/* ─── PROGRESS TAB ────────────────────────────────── */
.streak-hero {
  background: linear-gradient(135deg, var(--bg2), var(--bg3));
  border: 1px solid var(--bdrb);
  border-radius: var(--r16);
  padding: 22px;
  text-align: center;
  margin: 0 24px;
  position: relative;
  overflow: hidden;
}

.streak-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.streak-n {
  font-family: 'Cinzel Decorative', serif;
  font-size: 52px;
  color: var(--gold-l);
  line-height: 1;
  text-shadow: 0 0 28px rgba(201, 146, 42, .4);
}

.streak-l {
  font-family: 'Cinzel', serif;
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-m);
  margin-top: 5px;
}

.mastery-section { padding: 0 24px; }

.mastery-row { margin-bottom: 13px; }

.mastery-hdr {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 5px;
}

.mastery-cat {
  font-family: 'Cinzel', serif;
  font-size: 12px;
  color: var(--text-s);
}

.mastery-pct {
  font-family: 'Cinzel', serif;
  font-size: 10px;
  color: var(--gold);
}

.m-track {
  height: 5px;
  background: rgba(255, 255, 255, .06);
  border-radius: 3px;
  overflow: hidden;
}

.m-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-l));
}


/* ─── COMPLETION SCREEN ───────────────────────────── */
#complete-screen {
  padding: 14px 22px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60dvh;
}

.complete-icon  { font-size: 56px; margin-bottom: 16px; }

.complete-title {
  font-family: 'Cinzel Decorative', serif;
  font-size: 20px;
  color: var(--gold-l);
  margin-bottom: 8px;
}

.complete-sub {
  font-size: 15px;
  color: var(--text-s);
  font-style: italic;
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto 28px;
}

.complete-stats {
  display: flex;
  gap: 14px;
  margin-bottom: 28px;
}