/* ═══════════════════════════════════════════════════
   LEXIO — STYLESHEET
   Mobile-first · Dark Neon Gamer · App-like
═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Rajdhani:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap');

/* ── TOKENS ── */
:root {
  --bg:        #050508;
  --bg2:       #09090f;
  --bg3:       #0d0d18;
  --panel:     #111120;
  --panel2:    #181830;
  --panel3:    #1e1e38;
  --cyan:      #00f5ff;
  --cyan2:     #00c8d4;
  --cyan3:     rgba(0,245,255,0.08);
  --magenta:   #ff00aa;
  --magenta2:  #cc0088;
  --green:     #00ff88;
  --green2:    #00cc6a;
  --yellow:    #ffdd00;
  --orange:    #ff6b00;
  --white:     #e8eaf6;
  --muted:     #4a4a70;
  --muted2:    #9999bd;
  --border:    #1c1c35;
  --border2:   #252545;
  --radius:    12px;
  --radius-sm: 8px;
  --safe-top:    env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);

  --glow-cyan:    0 0 20px rgba(0,245,255,0.35), 0 0 50px rgba(0,245,255,0.1);
  --glow-magenta: 0 0 20px rgba(255,0,170,0.35), 0 0 50px rgba(255,0,170,0.1);
  --glow-green:   0 0 20px rgba(0,255,136,0.35), 0 0 50px rgba(0,255,136,0.1);

  --font-display: 'Orbitron', monospace;
  --font-body:    'Rajdhani', sans-serif;
  --font-mono:    'Share Tech Mono', monospace;
}

/* ── RESET ── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html { height:100%; overflow:hidden; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--white);
  height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

/* ── SCANLINES ── */
body::before {
  content:'';
  position:fixed; inset:0; z-index:9998; pointer-events:none;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.06) 2px, rgba(0,0,0,0.06) 4px);
}

/* ── GRID BG ── */
#grid-bg {
  position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:
    linear-gradient(rgba(0,245,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,245,255,0.025) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* ── PARTICLES ── */
#particles { position:fixed; inset:0; pointer-events:none; z-index:0; overflow:hidden; }
.particle {
  position:absolute; border-radius:50%; opacity:0;
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { transform:translateY(105vh) scale(0); opacity:0; }
  8%   { opacity:0.8; }
  92%  { opacity:0.4; }
  100% { transform:translateY(-5vh) scale(1); opacity:0; }
}

/* ═══════════════════════════════════════════════════
   APP SHELL
═══════════════════════════════════════════════════ */
#app {
  position:relative; z-index:1;
  height:100vh; height:100dvh;
  display:flex; flex-direction:column;
  overflow:hidden;
}

/* ── STATUS BAR SPACER (iOS) ── */
.status-bar {
  height: var(--safe-top);
  background: var(--bg);
  flex-shrink:0;
}

/* ── SCREENS ── */
.screen {
  display:none; flex-direction:column;
  flex:1; overflow:hidden;
  animation: screenIn 0.3s cubic-bezier(0.16,1,0.3,1);
}
.screen.active { display:flex; }
@keyframes screenIn {
  from { opacity:0; transform:translateY(12px); }
  to   { opacity:1; transform:translateY(0); }
}

/* ═══════════════════════════════════════════════════
   LOGIN SCREEN
═══════════════════════════════════════════════════ */
#screen-login {
  align-items:center; justify-content:center;
  padding:24px; gap:0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,245,255,0.06) 0%, transparent 60%);
}

.login-glow-ring {
  width:120px; height:120px;
  border-radius:50%;
  border:2px solid var(--cyan);
  box-shadow: var(--glow-cyan), inset 0 0 30px rgba(0,245,255,0.1);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:24px;
  animation: ringPulse 3s ease-in-out infinite;
}
@keyframes ringPulse {
  0%,100% { box-shadow:var(--glow-cyan), inset 0 0 30px rgba(0,245,255,0.1); }
  50%      { box-shadow:0 0 40px rgba(0,245,255,0.7), 0 0 80px rgba(0,245,255,0.2), inset 0 0 40px rgba(0,245,255,0.2); }
}

.login-logo {
  font-family: var(--font-display);
  font-size: 2.8rem; font-weight:900;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  letter-spacing:0.3em;
}

.login-tagline {
  font-family: var(--font-mono);
  font-size:0.65rem; color:var(--muted2);
  letter-spacing:0.25em; text-align:center;
  margin-bottom:40px; margin-top:4px;
}

.login-card {
  width:100%; max-width:380px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 24px;
  position:relative; overflow:hidden;
}
.login-card::before {
  content:'';
  position:absolute; top:0; left:0; right:0; height:2px;
  background:linear-gradient(90deg, transparent, var(--cyan), transparent);
  box-shadow:var(--glow-cyan);
}

.field { margin-bottom:18px; }
.field label {
  display:block;
  font-family:var(--font-mono); font-size:0.6rem;
  color:var(--cyan); letter-spacing:0.2em; margin-bottom:8px;
}
.field input {
  width:100%;
  background:var(--bg3);
  border:1px solid var(--border2);
  border-radius:var(--radius-sm);
  color:var(--white);
  font-family:var(--font-body); font-size:1rem;
  padding:14px 16px; outline:none;
  transition:all 0.25s;
  -webkit-appearance:none;
}
.field input:focus {
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(0,245,255,0.12);
  background:var(--panel2);
}

/* ── BUTTONS ── */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 24px; border:none; cursor:pointer;
  font-family:var(--font-display); font-size:0.7rem; font-weight:700;
  letter-spacing:0.12em; text-transform:uppercase;
  border-radius:var(--radius-sm);
  transition:all 0.2s; position:relative; overflow:hidden;
  -webkit-appearance:none; touch-action:manipulation;
}
.btn::after {
  content:''; position:absolute; inset:0;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
  transform:translateX(-100%);
}
.btn:active::after { transition:transform 0.3s; transform:translateX(100%); }
.btn:active { transform:scale(0.97); }

.btn-full { width:100%; }

.btn-cyan {
  background:linear-gradient(135deg, var(--cyan), var(--cyan2));
  color:var(--bg); box-shadow:var(--glow-cyan);
}
.btn-cyan:active { box-shadow:0 0 30px rgba(0,245,255,0.5); }

.btn-magenta {
  background:linear-gradient(135deg, var(--magenta), var(--magenta2));
  color:#fff; box-shadow:var(--glow-magenta);
}

.btn-green {
  background:linear-gradient(135deg, var(--green), var(--green2));
  color:var(--bg); box-shadow:var(--glow-green);
}

.btn-ghost {
  background:transparent; border:1px solid var(--border2);
  color:var(--muted2);
}
.btn-ghost:active { border-color:var(--cyan); color:var(--cyan); }

.btn-icon {
  width:48px; height:48px; padding:0; border-radius:50%;
  flex-shrink:0;
}
.btn-icon-lg {
  width:64px; height:64px; padding:0; border-radius:50%;
}

.login-hint {
  text-align:center; margin-top:14px;
  font-family:var(--font-mono); font-size:0.6rem; color:var(--muted);
}

/* ═══════════════════════════════════════════════════
   MAIN APP LAYOUT
═══════════════════════════════════════════════════ */
#screen-main {
  background: var(--bg2);
}

/* ── TOP BAR ── */
.topbar {
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 20px;
  background:var(--panel);
  border-bottom:1px solid var(--border);
  flex-shrink:0; position:relative; z-index:10;
}
.topbar-logo {
  font-family:var(--font-display); font-size:1.1rem; font-weight:900;
  color:var(--cyan); text-shadow:var(--glow-cyan); letter-spacing:0.2em;
}
.topbar-stats {
  display:flex; gap:16px; align-items:center;
}
.topbar-stat {
  font-family:var(--font-mono); font-size:0.65rem;
  color:var(--muted2); text-align:center;
}
.topbar-stat strong { display:block; color:var(--cyan); font-size:0.85rem; }

/* ── PAGE CONTENT ── */
.page-content {
  flex:1; overflow-y:auto; overflow-x:hidden;
  -webkit-overflow-scrolling:touch;
  padding-bottom: calc(72px + var(--safe-bottom));
}
.page-content::-webkit-scrollbar { display:none; }

/* ── BOTTOM NAV ── */
.bottom-nav {
  display:flex;
  background:var(--panel);
  border-top:1px solid var(--border);
  flex-shrink:0;
  padding-bottom:var(--safe-bottom);
  position:relative; z-index:10;
}
.bottom-nav::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--cyan), var(--magenta), var(--cyan), transparent);
  opacity:0.4;
}
.nav-btn {
  flex:1; display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  padding:10px 4px; gap:4px;
  background:none; border:none; cursor:pointer;
  color:var(--muted); transition:all 0.2s;
  font-family:var(--font-mono); font-size:0.55rem;
  letter-spacing:0.1em; text-transform:uppercase;
  -webkit-tap-highlight-color:transparent;
  touch-action:manipulation;
}
.nav-btn svg { width:22px; height:22px; transition:all 0.2s; }
.nav-btn.active { color:var(--cyan); }
.nav-btn.active svg { filter:drop-shadow(0 0 6px var(--cyan)); }
.nav-btn:active { opacity:0.7; }

/* ── SPEED PILL ── */
.speed-pill {
  display:flex; align-items:center; gap:4px;
  background:var(--panel2); border:1px solid var(--border2);
  border-radius:20px; padding:4px;
}
.speed-opt {
  font-family:var(--font-mono); font-size:0.6rem;
  color:var(--muted2); padding:4px 10px; border-radius:16px;
  cursor:pointer; transition:all 0.2s; border:none; background:none;
  touch-action:manipulation;
}
.speed-opt.active {
  background:var(--cyan); color:var(--bg); font-weight:700;
}

/* ═══════════════════════════════════════════════════
   EVOLUTION PAGE
═══════════════════════════════════════════════════ */
.evo-wrap { padding:20px 16px; }

.evo-header {
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px 20px; margin-bottom:10px;
  position:relative; overflow:hidden;
}
.evo-header::before {
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
}
.evo-header-top {
  display:flex; align-items:center; justify-content:space-between; margin-bottom:20px;
}
.evo-title {
  font-family:var(--font-mono); font-size:0.6rem;
  color:var(--muted2); letter-spacing:0.2em;
}
.streak-badge {
  display:flex; align-items:center; gap:6px;
  background:rgba(255,221,0,0.1); border:1px solid rgba(255,221,0,0.3);
  border-radius:20px; padding:6px 12px;
  font-family:var(--font-mono); font-size:0.65rem; color:var(--yellow);
}

.evo-ring-row {
  display:flex; align-items:center; gap:20px;
}
.ring-wrap { position:relative; flex-shrink:0; }
.ring-wrap svg { transform:rotate(-90deg); }
.ring-center {
  position:absolute; inset:0;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  font-family:var(--font-display);
}
.ring-pct { font-size:1.2rem; font-weight:700; color:var(--cyan); line-height:1; }
.ring-sub { font-size:0.4rem; color:var(--muted2); letter-spacing:0.1em; margin-top:2px; }

.evo-ring-info { flex:1; }
.evo-big-num {
  font-family:var(--font-display); font-size:2.4rem; font-weight:900;
  color:var(--cyan); text-shadow:var(--glow-cyan); line-height:1;
}
.evo-big-label {
  font-family:var(--font-mono); font-size:0.6rem; color:var(--muted2);
  letter-spacing:0.12em; margin-top:4px; margin-bottom:12px;
}
.evo-sub-stats { display:flex; gap:16px; }
.evo-sub-stat {
  font-family:var(--font-mono); font-size:0.6rem; color:var(--muted2);
}
.evo-sub-stat span { color:var(--white); }

/* ── STAT CARDS ── */
.stat-cards {
  display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:16px;
}
.stat-card {
  background:var(--panel); border:1px solid var(--border);
  border-radius:var(--radius); padding:16px;
  position:relative; overflow:hidden;
}
.stat-card-bar {
  position:absolute; top:0; left:0; bottom:0; width:3px;
  border-radius:3px 0 0 3px;
}
.stat-card-num {
  font-family:var(--font-display); font-size:1.6rem; font-weight:700;
  line-height:1; margin-bottom:4px; padding-left:12px;
}
.stat-card-label {
  font-family:var(--font-mono); font-size:0.55rem;
  color:var(--muted2); letter-spacing:0.1em; padding-left:12px;
}

/* ── WORD MAP ── */
.section-head {
  font-family:var(--font-mono); font-size:0.6rem; color:var(--muted2);
  letter-spacing:0.25em; margin-bottom:12px; margin-top:20px;
  display:flex; align-items:center; gap:8px;
}
.section-head::after {
  content:''; flex:1; height:1px;
  background:linear-gradient(90deg, var(--border2), transparent);
}

.word-map {
  display:flex; flex-wrap:wrap; gap:6px; margin-bottom:20px;
}
.word-chip {
  font-family:var(--font-mono); font-size:0.6rem;
  padding:5px 10px; border-radius:4px;
  border:1px solid var(--border); background:var(--panel);
  color:var(--muted); transition:all 0.3s;
}
.word-chip.in-progress {
  border-color:rgba(255,221,0,0.4); color:var(--yellow);
  background:rgba(255,221,0,0.06);
}
.word-chip.mastered {
  border-color:rgba(0,255,136,0.4); color:var(--green);
  background:rgba(0,255,136,0.06);
  box-shadow:0 0 6px rgba(0,255,136,0.15);
}

/* ═══════════════════════════════════════════════════
   LEARN PAGE
═══════════════════════════════════════════════════ */
.learn-wrap { padding:16px; }

/* ── WORD HERO ── */
.word-hero {
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px; margin-bottom:14px;
  position:relative; overflow:hidden;
  animation: cardIn 0.35s cubic-bezier(0.16,1,0.3,1);
}
@keyframes cardIn {
  from { opacity:0; transform:translateY(16px); }
  to   { opacity:1; transform:translateY(0); }
}
.word-hero::before {
  content:'';
  position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg, var(--cyan), var(--magenta), var(--cyan));
  background-size:200%; animation:shimmer 4s linear infinite;
}
@keyframes shimmer {
  0%   { background-position:200% 0; }
  100% { background-position:-200% 0; }
}

.word-rank {
  font-family:var(--font-mono); font-size:0.55rem; color:var(--muted2);
  letter-spacing:0.2em; margin-bottom:12px;
}
.word-main-row {
  display:flex; align-items:flex-end; gap:12px; margin-bottom:6px; flex-wrap:wrap;
}
.word-text {
  font-family:var(--font-display); font-size:2.6rem; font-weight:900;
  color:var(--cyan); text-shadow:var(--glow-cyan); letter-spacing:0.05em;
  line-height:1;
}
.word-phonetic {
  font-family:var(--font-mono); font-size:0.8rem; color:var(--muted2);
  padding-bottom:6px;
}
.word-pt {
  font-size:1.15rem; font-weight:600; color:var(--white);
  opacity:0.85; margin-bottom:16px;
}
.word-audio-row {
  display:flex; gap:10px; flex-wrap:wrap;
}

/* ── PLAY BUTTON ── */
.play-btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:10px 18px;
  background:rgba(0,245,255,0.07);
  border:1px solid rgba(0,245,255,0.3);
  border-radius:var(--radius-sm);
  color:var(--cyan);
  font-family:var(--font-mono); font-size:0.65rem; letter-spacing:0.1em;
  cursor:pointer; transition:all 0.2s;
  touch-action:manipulation; -webkit-tap-highlight-color:transparent;
}
.play-btn:active { background:rgba(0,245,255,0.15); }
.play-btn.playing {
  animation:playPulse 0.8s ease-in-out infinite;
  border-color:var(--cyan);
}
@keyframes playPulse {
  0%,100% { box-shadow:0 0 8px rgba(0,245,255,0.3); }
  50%      { box-shadow:0 0 20px rgba(0,245,255,0.7); }
}
.play-btn-mag {
  border-color:rgba(255,0,170,0.3); color:var(--magenta);
  background:rgba(255,0,170,0.07);
}
.play-btn-mag:active { background:rgba(255,0,170,0.15); }

/* ── IMAGE GRID ── */
.img-grid {
  display:grid; grid-template-columns:repeat(4,1fr); gap:8px;
  margin-bottom:14px;
}
.img-slot {
  aspect-ratio:1; border-radius:var(--radius-sm);
  background:var(--bg3); border:1px solid var(--border);
  overflow:hidden; cursor:pointer; transition:all 0.2s;
  position:relative;
}
.img-slot img {
  width:100%; height:100%; object-fit:cover;
  transition:transform 0.3s; display:block;
}
.img-slot:active img { transform:scale(1.05); }
.img-slot:active { border-color:var(--cyan); }
.img-slot-overlay {
  position:absolute; inset:0;
  background:linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
  opacity:0; transition:opacity 0.2s;
}

/* ── PHRASES ── */
.phrases-wrap { margin-bottom:14px; }
.phrase-card {
  background:var(--panel);
  border:1px solid var(--border);
  border-left:3px solid var(--magenta);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:14px 14px 14px 16px;
  margin-bottom:8px;
  display:flex; align-items:flex-start; gap:12px;
  animation:phraseIn 0.3s ease both;
}
@keyframes phraseIn {
  from { opacity:0; transform:translateX(-8px); }
  to   { opacity:1; transform:translateX(0); }
}
.phrase-body { flex:1; min-width:0; }
.phrase-en {
  font-size:0.95rem; font-weight:600; color:var(--white);
  margin-bottom:3px; line-height:1.4;
}
.phrase-en .key { color:var(--magenta); text-shadow:0 0 8px rgba(255,0,170,0.4); }
.phrase-pt { font-size:0.8rem; color:var(--muted2); line-height:1.3; }

/* ── HABIT BOX ── */
.habit-box {
  background:linear-gradient(135deg, rgba(255,0,170,0.06), rgba(0,245,255,0.06));
  border:1px solid rgba(255,0,170,0.2);
  border-radius:var(--radius); padding:18px 16px;
  margin-bottom:14px;
}
.habit-header {
  display:flex; align-items:center; gap:8px; margin-bottom:8px;
}
.habit-icon { font-size:1.2rem; }
.habit-title {
  font-family:var(--font-mono); font-size:0.6rem;
  color:var(--magenta); letter-spacing:0.15em;
}
.habit-text { font-size:0.9rem; color:var(--white); line-height:1.55; opacity:0.85; }

/* ── LEARN ACTIONS ── */
.learn-actions { display:flex; gap:10px; padding:16px; padding-top:0; }
.learn-actions .btn { flex:1; }

/* ═══════════════════════════════════════════════════
   TEST PAGE
═══════════════════════════════════════════════════ */
.test-wrap { padding:16px; }

/* ── MASTERY BAR ── */
.mastery-card {
  background:var(--panel); border:1px solid var(--border);
  border-radius:var(--radius); padding:16px 20px;
  margin-bottom:14px;
}
.mastery-top {
  display:flex; justify-content:space-between; align-items:center;
  margin-bottom:12px;
}
.mastery-word {
  font-family:var(--font-display); font-size:1rem; font-weight:700;
  color:var(--white);
}
.mastery-count {
  font-family:var(--font-mono); font-size:0.65rem; color:var(--muted2);
}
.mastery-dots { display:flex; gap:8px; }
.dot {
  flex:1; height:6px; border-radius:3px;
  background:var(--border2); transition:all 0.4s;
}
.dot.filled {
  background:var(--green);
  box-shadow:0 0 8px rgba(0,255,136,0.5);
}

/* ── TEST CARD ── */
.test-card {
  background:var(--panel); border:1px solid var(--border);
  border-radius:var(--radius); padding:20px;
  margin-bottom:14px;
  animation:cardIn 0.35s cubic-bezier(0.16,1,0.3,1);
}
.test-card::before {
  content:''; display:block; height:2px;
  background:linear-gradient(90deg, var(--magenta), var(--cyan));
  border-radius:2px; margin-bottom:20px;
}

.test-prompt-label {
  font-family:var(--font-mono); font-size:0.55rem;
  color:var(--muted2); letter-spacing:0.2em; margin-bottom:16px;
}

.test-audio-area {
  display:flex; align-items:center; gap:16px; margin-bottom:20px;
  padding:16px; background:var(--bg3); border-radius:var(--radius-sm);
}
.test-audio-btn {
  width:60px; height:60px; border-radius:50%; flex-shrink:0;
  background:linear-gradient(135deg, var(--magenta), var(--magenta2));
  border:none; cursor:pointer; display:flex; align-items:center; justify-content:center;
  box-shadow:var(--glow-magenta); transition:all 0.2s;
  touch-action:manipulation;
}
.test-audio-btn svg { width:24px; height:24px; fill:white; }
.test-audio-btn.playing { animation:playPulseMag 0.8s infinite; }
@keyframes playPulseMag {
  0%,100% { box-shadow:0 0 15px rgba(255,0,170,0.4); }
  50%      { box-shadow:0 0 35px rgba(255,0,170,0.8); }
}
.test-audio-btn:active { transform:scale(0.93); }

.test-hint {
  font-size:0.85rem; color:var(--muted2); line-height:1.4; flex:1;
}
.test-hint strong { color:var(--white); display:block; margin-bottom:2px; font-size:0.7rem; font-family:var(--font-mono); }

/* ── INPUT ── */
.test-input-wrap { position:relative; margin-bottom:14px; }
.test-input {
  width:100%;
  background:var(--bg3); border:2px solid var(--border2);
  border-radius:var(--radius-sm);
  color:var(--white); font-family:var(--font-body);
  font-size:1.1rem; font-weight:600;
  padding:14px 16px; outline:none;
  transition:all 0.25s; -webkit-appearance:none;
  caret-color:var(--cyan);
  letter-spacing:0.03em;
}
.test-input:focus { border-color:var(--magenta); box-shadow:0 0 0 3px rgba(255,0,170,0.12); }
.test-input.correct {
  border-color:var(--green); color:var(--green);
  box-shadow:0 0 0 3px rgba(0,255,136,0.12);
}
.test-input.wrong {
  border-color:var(--orange); color:var(--orange);
  box-shadow:0 0 0 3px rgba(255,107,0,0.12);
  animation:shake 0.35s ease;
}
@keyframes shake {
  0%,100% { transform:translateX(0); }
  20%      { transform:translateX(-8px); }
  40%      { transform:translateX(8px); }
  60%      { transform:translateX(-5px); }
  80%      { transform:translateX(5px); }
}

/* ── FEEDBACK ── */
.test-feedback {
  border-radius:var(--radius-sm); padding:12px 16px;
  font-size:0.9rem; font-weight:600;
  margin-bottom:14px; display:none; line-height:1.4;
}
.test-feedback.ok {
  display:block;
  background:rgba(0,255,136,0.08); border:1px solid rgba(0,255,136,0.3);
  color:var(--green);
}
.test-feedback.fail {
  display:block;
  background:rgba(255,107,0,0.08); border:1px solid rgba(255,107,0,0.3);
  color:var(--orange);
}

.test-actions { display:flex; gap:10px; }
.test-actions .btn { flex:1; }

/* ═══════════════════════════════════════════════════
   EMPTY STATES
═══════════════════════════════════════════════════ */
.empty-state {
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  padding:60px 24px; text-align:center; gap:12px;
}
.empty-icon {
  font-family:var(--font-display); font-size:2.5rem; font-weight:900;
  color:var(--cyan); text-shadow:var(--glow-cyan);
}
.empty-title {
  font-family:var(--font-display); font-size:0.9rem;
  color:var(--white); letter-spacing:0.1em;
}
.empty-sub { font-size:0.85rem; color:var(--muted2); line-height:1.5; max-width:260px; }

/* ═══════════════════════════════════════════════════
   TOAST
═══════════════════════════════════════════════════ */
#toast {
  position:fixed; bottom:calc(80px + var(--safe-bottom)); left:50%;
  transform:translateX(-50%) translateY(20px);
  background:var(--panel2); border:1px solid var(--border2);
  border-radius:20px; padding:12px 20px;
  font-family:var(--font-mono); font-size:0.7rem;
  white-space:nowrap; pointer-events:none; z-index:9997;
  opacity:0; transition:all 0.3s cubic-bezier(0.16,1,0.3,1);
  max-width:calc(100vw - 40px);
  white-space:normal; text-align:center;
}
#toast.show {
  opacity:1; transform:translateX(-50%) translateY(0);
}

/* ── CONFETTI ── */
.confetti-piece {
  position:fixed; width:7px; height:7px;
  pointer-events:none; z-index:9996;
  animation:confettiDrop 1.4s ease forwards;
}
@keyframes confettiDrop {
  0%   { transform:translateY(-20px) rotate(0deg); opacity:1; }
  100% { transform:translateY(100vh) rotate(600deg); opacity:0; }
}

/* ── LOADING ── */
.shimmer-block {
  background:linear-gradient(90deg, var(--panel) 25%, var(--panel2) 50%, var(--panel) 75%);
  background-size:200% 100%;
  animation:shimmerAnim 1.5s infinite;
  border-radius:var(--radius-sm);
}
@keyframes shimmerAnim {
  0%   { background-position:200% 0; }
  100% { background-position:-200% 0; }
}

/* ═══════════════════════════════════════════════════
   DESKTOP ENHANCEMENTS (min-width: 768px)
═══════════════════════════════════════════════════ */
@media (min-width: 768px) {
  #screen-main { flex-direction:row; }

  /* hide bottom nav, show sidebar */
  .bottom-nav { display:none; }

  .sidebar {
    display:flex; flex-direction:column;
    width:220px; min-width:220px;
    background:var(--panel);
    border-right:1px solid var(--border);
    height:100vh; overflow:hidden;
    flex-shrink:0;
  }
  .sidebar-logo {
    padding:24px 20px 18px;
    font-family:var(--font-display); font-size:1.3rem; font-weight:900;
    color:var(--cyan); text-shadow:var(--glow-cyan); letter-spacing:0.2em;
    border-bottom:1px solid var(--border);
  }
  .sidebar-logo small {
    display:block; font-size:0.45rem; color:var(--muted2);
    letter-spacing:0.3em; margin-top:2px; font-family:var(--font-mono);
  }
  .sidebar-nav { flex:1; padding:16px 0; }
  .sidebar-nav-btn {
    display:flex; align-items:center; gap:12px;
    width:100%; padding:12px 20px;
    background:none; border:none; border-left:3px solid transparent;
    color:var(--muted2); cursor:pointer;
    font-family:var(--font-body); font-size:0.9rem; font-weight:600;
    letter-spacing:0.05em; transition:all 0.2s;
    touch-action:manipulation;
  }
  .sidebar-nav-btn svg { width:18px; height:18px; flex-shrink:0; }
  .sidebar-nav-btn:hover { color:var(--white); background:rgba(0,245,255,0.04); }
  .sidebar-nav-btn.active {
    color:var(--cyan); border-left-color:var(--cyan);
    background:rgba(0,245,255,0.06);
  }
  .sidebar-nav-btn.active svg { filter:drop-shadow(0 0 5px var(--cyan)); }
  .sidebar-footer {
    padding:16px 20px; border-top:1px solid var(--border);
    font-family:var(--font-mono); font-size:0.6rem; color:var(--muted);
  }
  .sidebar-footer div { margin-bottom:5px; display:flex; justify-content:space-between; }
  .sidebar-footer span { color:var(--cyan); }

  /* page content no bottom padding needed */
  .page-content { padding-bottom:20px; }

  /* topbar hidden on desktop */
  .topbar { display:none; }

  /* main area */
  #screen-main > .main-area {
    flex:1; display:flex; flex-direction:column; overflow:hidden;
  }
}

@media (min-width:1024px) {
  .learn-wrap, .test-wrap, .evo-wrap { max-width:680px; margin:0 auto; }
}

.phrase-phonetic {
  font-size: 0.82rem;
  color: #a78bfa;
  font-style: italic;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.phonetic-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.68rem;
  font-style: normal;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #7c5fc4;
  background: #1e1630;
  border: 1px solid #3d2d6e;
  border-radius: 4px;
  padding: 1px 5px;
  flex-shrink: 0;
}

.phrase-pt {
  font-size: 0.82rem;
  color: #888;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.translation-badge {
  font-size: 0.75rem;
  flex-shrink: 0;
}