:root {
  --bg:       #08080f;
  --surface:  #0f0f1a;
  --surface2: #141425;
  --surface3: #1a1a30;
  --border:   rgba(255,255,255,0.06);
  --border2:  rgba(255,255,255,0.10);
  --accent:   #6f5ce8;
  --accent-l: #8f7fff;
  --accent-d: #4a3db8;
  --green:    #00dfa2;
  --red:      #ff4f6a;
  --yellow:   #ffc93c;
  --text:     #f0f0ff;
  --text2:    #9090b8;
  --text3:    #505070;
  --font:     'Outfit', sans-serif;
  --mono:     'JetBrains Mono', monospace;
  --r:        20px;
  --r-sm:     12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: #000;
  font-family: var(--font);
}

/* ── PHONE SHELL ── */
.shell {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 60% 40%, rgba(111,92,232,0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(0,223,162,0.07) 0%, transparent 50%),
              #05050a;
}

.phone {
  width: 390px;
  height: 844px;
  background: var(--bg);
  border-radius: 50px;
  border: 1.5px solid rgba(255,255,255,0.08);
  box-shadow:
    0 0 0 8px rgba(255,255,255,0.02),
    0 0 0 10px rgba(255,255,255,0.01),
    0 60px 120px rgba(0,0,0,0.8),
    0 0 80px rgba(111,92,232,0.12);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Notch */
.notch {
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 126px; height: 34px;
  background: #000;
  border-radius: 0 0 22px 22px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.notch-cam {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #1a1a2a;
  border: 1.5px solid #2a2a3a;
}

/* Status Bar */
.status-bar {
  height: 44px;
  padding: 0 28px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-bottom: 6px;
  flex-shrink: 0;
  position: relative;
  z-index: 50;
}
.status-time {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.5px;
}
.status-icons {
  display: flex;
  align-items: center;
  gap: 5px;
}
.signal-bar { display: flex; gap: 2px; align-items: flex-end; }
.signal-bar span {
  width: 3px;
  background: var(--text);
  border-radius: 1px;
  opacity: 0.7;
}
.battery-icon {
  display: flex; align-items: center; gap: 2px;
}
.bat-body {
  width: 22px; height: 11px;
  border: 1.5px solid rgba(255,255,255,0.5);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}
.bat-fill {
  position: absolute;
  left: 1px; top: 1px; bottom: 1px;
  width: 72%;
  background: var(--green);
  border-radius: 1px;
}
.bat-tip {
  width: 2px; height: 5px;
  background: rgba(255,255,255,0.4);
  border-radius: 0 1px 1px 0;
}

/* ── APP AREA ── */
.app {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* ── SCREENS ── */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  transform: translateX(100%);
  transition: transform 0.38s cubic-bezier(0.32, 0.72, 0, 1);
  will-change: transform;
}
.screen.active {
  transform: translateX(0%);
}
.screen.slide-out {
  transform: translateX(-30%);
}

/* ── BOTTOM NAV ── */
.bottom-nav {
  height: 80px;
  background: rgba(8,8,15,0.95);
  backdrop-filter: blur(24px);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  padding-top: 10px;
  flex-shrink: 0;
  position: relative;
  z-index: 50;
}
.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  padding: 4px 0;
  position: relative;
}
.nav-icon-wrap {
  width: 44px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 15px;
  transition: background 0.2s;
  position: relative;
}
.nav-item.on .nav-icon-wrap {
  background: rgba(111,92,232,0.18);
}
.nav-svg { width: 22px; height: 22px; }
.nav-svg path, .nav-svg circle, .nav-svg rect, .nav-svg line {
  stroke: var(--text3);
  stroke-width: 1.8;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.2s, fill 0.2s;
}
.nav-item.on .nav-svg path,
.nav-item.on .nav-svg circle,
.nav-item.on .nav-svg rect,
.nav-item.on .nav-svg line {
  stroke: var(--accent-l);
}
.nav-label {
  font-size: 10px;
  font-weight: 500;
  color: var(--text3);
  transition: color 0.2s;
}
.nav-item.on .nav-label { color: var(--accent-l); }
.nav-badge {
  position: absolute;
  top: -2px; right: 4px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  border: 1.5px solid var(--bg);
  display: none;
}
.nav-badge.show { display: block; }

/* ─────────────────────────────
   SCREEN 1: HOME / DASHBOARD
───────────────────────────── */
.home-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 20px 20px;
  scrollbar-width: none;
}
.home-scroll::-webkit-scrollbar { display: none; }

/* Header */
.home-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}
.home-greeting { font-size: 13px; color: var(--text3); font-weight: 400; margin-bottom: 3px; }
.home-name { font-size: 22px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; }
.home-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--green));
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

/* Mode Toggle Card */
.mode-card {
  background: linear-gradient(135deg, rgba(111,92,232,0.18) 0%, rgba(0,223,162,0.06) 100%);
  border: 1px solid rgba(111,92,232,0.25);
  border-radius: 24px;
  padding: 20px;
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}
.mode-card::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(111,92,232,0.2), transparent);
  border-radius: 50%;
}
.mode-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}
.mode-label-sm { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; margin-bottom: 4px; }
.mode-status-text { font-size: 24px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; transition: color 0.3s; }
.mode-status-text.on { color: var(--green); }

/* Toggle switch */
.toggle {
  width: 54px; height: 30px;
  border-radius: 15px;
  background: var(--surface3);
  border: 1px solid var(--border2);
  position: relative;
  cursor: pointer;
  transition: background 0.35s, border-color 0.35s, box-shadow 0.35s;
  flex-shrink: 0;
}
.toggle.on {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(111,92,232,0.5);
}
.toggle-ball {
  width: 24px; height: 24px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 2px; left: 2px;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.toggle.on .toggle-ball { transform: translateX(24px); }

.mode-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.ms-item {
  background: rgba(0,0,0,0.25);
  border-radius: 14px;
  padding: 10px 8px;
  text-align: center;
}
.ms-val { font-size: 18px; font-weight: 800; color: var(--text); font-variant-numeric: tabular-nums; }
.ms-lbl { font-size: 10px; color: var(--text3); margin-top: 2px; font-weight: 500; }

/* Focus ring (animated when on) */
.focus-ring {
  position: absolute;
  top: -4px; left: -4px; right: -4px; bottom: -4px;
  border-radius: 28px;
  border: 2px solid rgba(111,92,232,0);
  pointer-events: none;
  transition: border-color 0.5s;
}
.focus-ring.on {
  border-color: rgba(111,92,232,0.3);
  animation: ringPulse 2s ease infinite;
}
@keyframes ringPulse {
  0%,100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Section header */
.sec-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.sec-title { font-size: 14px; font-weight: 700; color: var(--text); letter-spacing: -0.3px; }
.sec-link { font-size: 12px; color: var(--accent-l); font-weight: 500; cursor: pointer; }

/* Quick Actions */
.quick-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}
.quick-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 14px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
}
.quick-card:active { transform: scale(0.97); }
.quick-card:hover { background: var(--surface2); border-color: var(--border2); }
.qc-icon {
  width: 38px; height: 38px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  margin-bottom: 10px;
}
.qc-name { font-size: 13px; font-weight: 700; color: var(--text); margin-bottom: 2px; }
.qc-desc { font-size: 11px; color: var(--text3); font-weight: 400; }
.qc-arrow { position: absolute; top: 14px; right: 14px; font-size: 14px; color: var(--text3); }

/* Subjects */
.subject-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.subject-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: background 0.2s;
}
.subject-item:hover { background: var(--surface2); }
.subj-color { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }
.subj-info { flex: 1; }
.subj-name { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 2px; }
.subj-meta { font-size: 11px; color: var(--text3); }
.subj-progress-wrap { width: 60px; }
.subj-bar-bg { height: 4px; background: var(--surface3); border-radius: 2px; overflow: hidden; margin-bottom: 4px; }
.subj-bar-fill { height: 100%; border-radius: 2px; }
.subj-pct { font-size: 10px; color: var(--text3); font-weight: 600; text-align: right; font-family: var(--mono); }

/* ─────────────────────────────
   SCREEN 2: CÂMERA IA
───────────────────────────── */
.cam-screen { background: #000; }
.cam-header {
  padding: 14px 20px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(10px);
  flex-shrink: 0;
  z-index: 10;
  position: relative;
}
.cam-title-group
.cam-title { font-size: 16px; font-weight: 700; color: #fff; }
.cam-sub { font-size: 11px; color: rgba(255,255,255,0.4); margin-top: 1px; }
.cam-badge-ia {
  display: flex; align-items: center; gap: 6px;
  background: rgba(111,92,232,0.2);
  border: 1px solid rgba(111,92,232,0.4);
  border-radius: 100px;
  padding: 5px 12px;
  font-size: 11px; color: var(--accent-l); font-weight: 600;
}
.cam-badge-ia::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-l);
  animation: pulse 1.5s ease infinite;
}
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.3;} }

.cam-viewfinder {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #020208;
}

/* Grid lines */
.vf-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(111,92,232,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(111,92,232,0.08) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* Simulated "content on board" */
.vf-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
.board-sim {
  width: 280px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.board-line { height: 7px; background: rgba(255,255,255,0.1); border-radius: 3px; animation: boardBlink 2s ease-in-out infinite; }
.board-line.l2 { width: 70%; animation-delay: 0.15s; }
.board-line.l3 { width: 90%; animation-delay: 0.3s; }
.board-line.l4 { width: 60%; animation-delay: 0.45s; }
.board-line.l5 { width: 85%; animation-delay: 0.6s; }
.board-line.l6 { width: 40%; animation-delay: 0.75s; }
.board-line.l7 { width: 75%; animation-delay: 0.9s; }
@keyframes boardBlink { 0%,100%{opacity:0.35;} 50%{opacity:0.7;} }

/* Scan frame */
.scan-frame {
  position: absolute;
  z-index: 5;
  width: 260px; height: 190px;
}
.sf-corner {
  position: absolute;
  width: 18px; height: 18px;
  border-color: var(--accent-l);
  border-style: solid;
  border-width: 0;
}
.sf-corner.tl { top: 0; left: 0; border-top-width: 3px; border-left-width: 3px; border-radius: 5px 0 0 0; }
.sf-corner.tr { top: 0; right: 0; border-top-width: 3px; border-right-width: 3px; border-radius: 0 5px 0 0; }
.sf-corner.bl { bottom: 0; left: 0; border-bottom-width: 3px; border-left-width: 3px; border-radius: 0 0 0 5px; }
.sf-corner.br { bottom: 0; right: 0; border-bottom-width: 3px; border-right-width: 3px; border-radius: 0 0 5px 0; }

.scan-line {
  position: absolute;
  left: 2px; right: 2px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 8px var(--accent);
  animation: scanAnim 2s ease-in-out infinite;
}
@keyframes scanAnim {
  0% { top: 0; opacity: 1; }
  95% { top: calc(100% - 2px); opacity: 1; }
  100% { top: calc(100% - 2px); opacity: 0; }
}

/* AI overlay when processing */
.ai-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8,8,15,0.92);
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.ai-overlay.show { opacity: 1; pointer-events: all; }
.ai-spinner {
  width: 56px; height: 56px;
  border: 3px solid rgba(111,92,232,0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.ai-proc-text { font-size: 15px; font-weight: 700; color: var(--text); }
.ai-proc-sub { font-size: 12px; color: var(--text3); }
.ai-dots span {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin: 0 3px;
  animation: dotAnim 1.2s ease-in-out infinite;
}
.ai-dots span:nth-child(2) { animation-delay: 0.2s; }
.ai-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dotAnim { 0%,80%,100%{transform:scale(0.6);opacity:0.4;} 40%{transform:scale(1);opacity:1;} }

/* Cam controls */
.cam-controls {
  padding: 16px 24px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0,0,0,0.9);
  backdrop-filter: blur(10px);
  flex-shrink: 0;
}
.cam-hint-text {
  font-size: 11px;
  color: rgba(255,255,255,0.35);
  text-align: center;
  flex: 1;
}
.cam-shutter {
  width: 68px; height: 68px;
  border-radius: 50%;
  background: transparent;
  border: 3px solid rgba(255,255,255,0.4);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}
.cam-shutter:active { transform: scale(0.93); }
.cam-shutter-inner {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: #fff;
  transition: background 0.2s, box-shadow 0.2s;
}
.cam-shutter:hover .cam-shutter-inner { background: var(--accent-l); box-shadow: 0 0 20px rgba(111,92,232,0.6); }
.cam-side-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex: 0 0 44px;
}

/* ─────────────────────────────
   SCREEN 3: RESUMO IA
───────────────────────────── */
.resumo-header {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--bg);
}
.back-btn {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.2s;
}
.back-btn:hover { background: var(--surface2); }
.rh-info { flex: 1; }
.rh-title { font-size: 16px; font-weight: 700; color: var(--text); letter-spacing: -0.3px; }
.rh-sub { font-size: 11px; color: var(--text3); margin-top: 1px; }
.rh-ia-chip {
  display: flex; align-items: center; gap: 5px;
  background: rgba(0,223,162,0.1);
  border: 1px solid rgba(0,223,162,0.25);
  border-radius: 100px;
  padding: 4px 10px;
  font-size: 10px;
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
}
.rh-ia-chip::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 1.5s ease infinite;
}

.resumo-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 20px 20px;
  scrollbar-width: none;
}
.resumo-scroll::-webkit-scrollbar { display: none; }

/* Photo preview */
.photo-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.photo-thumb-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.photo-info { flex: 1; }
.photo-name { font-size: 13px; font-weight: 600; color: var(--text); }
.photo-meta { font-size: 11px; color: var(--text3); margin-top: 2px; }
.photo-quality {
  display: flex; align-items: center; gap: 4px;
  font-size: 10px; color: var(--green); font-weight: 600;
}

/* Score pill */
.score-pill {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}
.sp-item {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  text-align: center;
}
.sp-val { font-size: 20px; font-weight: 800; color: var(--text); font-family: var(--mono); }
.sp-lbl { font-size: 10px; color: var(--text3); margin-top: 2px; }

/* Content blocks */
.r-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 12px;
  position: relative;
  overflow: hidden;
}
.r-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
}
.r-block.purple::before { background: var(--accent); }
.r-block.green::before { background: var(--green); }
.r-block.yellow::before { background: var(--yellow); }
.r-block-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}
.r-block.purple .r-block-title { color: var(--accent-l); }
.r-block.green .r-block-title { color: var(--green); }
.r-block.yellow .r-block-title { color: var(--yellow); }
.r-block-text {
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
  font-weight: 400;
}
.r-block-text strong { color: var(--text); font-weight: 700; }

/* Key points */
.kp-list { display: flex; flex-direction: column; gap: 8px; }
.kp-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.kp-num {
  width: 22px; height: 22px;
  border-radius: 7px;
  background: rgba(111,92,232,0.15);
  border: 1px solid rgba(111,92,232,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700; color: var(--accent-l);
  flex-shrink: 0;
  margin-top: 1px;
}
.kp-text { font-size: 13px; color: var(--text); line-height: 1.6; }
.kp-text em { color: var(--accent-l); font-style: normal; font-weight: 600; }

/* Tags */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.tag {
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2px;
}
.tag.purple { background: rgba(111,92,232,0.15); color: var(--accent-l); border: 1px solid rgba(111,92,232,0.25); }
.tag.green { background: rgba(0,223,162,0.12); color: var(--green); border: 1px solid rgba(0,223,162,0.2); }
.tag.yellow { background: rgba(255,201,60,0.12); color: var(--yellow); border: 1px solid rgba(255,201,60,0.2); }

/* Action buttons */
.resumo-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 4px;
}
.r-btn {
  padding: 14px;
  border-radius: 14px;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
  border: none;
  letter-spacing: 0.2px;
}
.r-btn:active { transform: scale(0.97); }
.r-btn.primary { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(111,92,232,0.35); }
.r-btn.primary:hover { box-shadow: 0 8px 24px rgba(111,92,232,0.5); }
.r-btn.secondary { background: var(--surface2); color: var(--text2); border: 1px solid var(--border2); }

/* ─────────────────────────────
   SCREEN 4: INTERNET / BLOQUEIO
───────────────────────────── */
.inet-header {
  padding: 14px 20px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.inet-title { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; }
.inet-sub { font-size: 12px; color: var(--text3); margin-top: 2px; }

.inet-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 20px;
  scrollbar-width: none;
}
.inet-scroll::-webkit-scrollbar { display: none; }

.ia-status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0,223,162,0.08);
  border: 1px solid rgba(0,223,162,0.2);
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 20px;
}
.ia-pulse {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
  animation: pulse 1.5s ease infinite;
  box-shadow: 0 0 10px var(--green);
}
.ia-status-text { font-size: 12px; color: var(--green); font-weight: 600; }

/* Search bar */
.inet-search {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  cursor: text;
}
.inet-search-icon { font-size: 16px; flex-shrink: 0; }
.inet-search-text { font-size: 13px; color: var(--text3); }
.inet-search-badge {
  margin-left: auto;
  background: rgba(111,92,232,0.15);
  border: 1px solid rgba(111,92,232,0.25);
  border-radius: 100px;
  padding: 2px 8px;
  font-size: 9px;
  color: var(--accent-l);
  font-weight: 700;
  flex-shrink: 0;
}

/* App section title */
.app-sec-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text3);
  margin-bottom: 10px;
  margin-top: 4px;
}

.app-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.app-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.app-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.app-name-wrap { flex: 1; }
.app-name { font-size: 13px; font-weight: 600; color: var(--text); }
.app-domain { font-size: 10px; color: var(--text3); margin-top: 1px; }
.app-chip {
  font-size: 10px;
  padding: 4px 10px;
  border-radius: 100px;
  font-weight: 700;
  flex-shrink: 0;
}
.chip-blocked { background: rgba(255,79,106,0.12); color: var(--red); border: 1px solid rgba(255,79,106,0.25); }
.chip-allowed { background: rgba(0,223,162,0.1); color: var(--green); border: 1px solid rgba(0,223,162,0.2); }
.chip-ia { background: rgba(111,92,232,0.12); color: var(--accent-l); border: 1px solid rgba(111,92,232,0.2); }

/* Internet usage bar */
.usage-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 16px;
}
.usage-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 10px;
}
.usage-title { font-size: 13px; font-weight: 600; color: var(--text); }
.usage-val { font-size: 13px; font-weight: 700; color: var(--accent-l); font-family: var(--mono); }
.usage-bar-bg { height: 6px; background: var(--surface3); border-radius: 3px; overflow: hidden; }
.usage-bar-fill {
  height: 100%; border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--green));
  width: 28%;
  position: relative;
}
.usage-bar-fill::after {
  content: '';
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 4px;
  background: rgba(255,255,255,0.5);
  border-radius: 2px;
  animation: shimmer 1.5s ease infinite;
}
@keyframes shimmer { 0%,100%{opacity:0.5;} 50%{opacity:1;} }

/* ─────────────────────────────
   SCREEN 5: CONFIGURAÇÕES
───────────────────────────── */
.config-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 20px;
  scrollbar-width: none;
}
.config-scroll::-webkit-scrollbar { display: none; }
.config-header { padding: 14px 20px; flex-shrink: 0; border-bottom: 1px solid var(--border); }
.config-title { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; }
.config-sub { font-size: 12px; color: var(--text3); margin-top: 2px; }

.config-section { margin-bottom: 24px; }
.config-sec-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text3);
  margin-bottom: 10px;
  padding-left: 4px;
}
.config-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
}
.config-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}
.config-row:last-child { border-bottom: none; }
.config-row:hover { background: var(--surface2); }
.config-row-icon {
  width: 32px; height: 32px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.cr-info { flex: 1; }
.cr-name { font-size: 14px; font-weight: 600; color: var(--text); }
.cr-desc { font-size: 11px; color: var(--text3); margin-top: 1px; }
.cr-right { display: flex; align-items: center; gap: 8px; }
.cr-val { font-size: 12px; color: var(--text3); font-family: var(--mono); }
.cr-arrow { color: var(--text3); font-size: 14px; }

/* Slider */
.config-slider-wrap { padding: 14px 16px; border-bottom: 1px solid var(--border); }
.config-slider-top { display: flex; justify-content: space-between; margin-bottom: 8px; }
.config-slider-label { font-size: 13px; font-weight: 600; color: var(--text); }
.config-slider-val { font-size: 13px; font-weight: 700; color: var(--accent-l); font-family: var(--mono); }
input[type=range] {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--surface3);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(111,92,232,0.5);
  cursor: pointer;
}

/* Profile card */
.profile-card {
  background: linear-gradient(135deg, var(--surface), var(--surface2));
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.profile-avatar {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--green));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.profile-name { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 3px; }
.profile-grade { font-size: 12px; color: var(--text3); }
.profile-streak {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.streak-num { font-size: 22px; font-weight: 800; color: var(--yellow); font-family: var(--mono); }
.streak-lbl { font-size: 10px; color: var(--text3); font-weight: 600; }

/* ── DYNAMIC ISLAND ── */
.di-island {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.di-inner {
  background: #000;
  min-width: 100px;
  max-width: 320px;
  height: 30px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  gap: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
  overflow: hidden;
}

.di-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  transition: all 0.5s;
}

.di-content {
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.4s ease;
  white-space: nowrap;
}

.di-icon {
  font-size: 14px;
}

.di-text {
  font-size: 11px;
  color: #fff;
  font-weight: 600;
  letter-spacing: -0.2px;
}

/* States */
.di-island.di-show .di-inner {
  height: 44px;
  min-width: 200px;
  border-radius: 22px;
  padding: 0 20px;
  background: #08080f;
  border: 1px solid rgba(255,255,255,0.08);
}

.di-island.di-show .di-dot {
  transform: scale(0);
  width: 0;
  margin: 0;
}

.di-island.di-show .di-content {
  opacity: 1;
  transform: scale(1);
}

.di-island.di-hide .di-inner {
  height: 30px;
  min-width: 100px;
  opacity: 0;
  transform: scale(0.8);
}

@media (max-width: 400px) {
  .phone { width: 100%; height: 100%; border-radius: 0; border: none; }
  .shell { padding: 0; background: #000; }
}
@media (min-width: 401px) {
  .shell { padding: 40px; }
}

/* ═══════════════════════════════════════
   SCREENS DE MATÉRIA — COMPARTILHADO
═══════════════════════════════════════ */
.materia-screen {
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

/* ── HERO BANNER ── */
.mat-hero {
  position: relative;
  padding: 16px 20px 24px;
  flex-shrink: 0;
  overflow: hidden;
}
.mat-hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 0%, rgba(111,92,232,0.25) 0%, transparent 65%),
              radial-gradient(ellipse at 10% 100%, rgba(111,92,232,0.1) 0%, transparent 50%);
}
.fis-hero-bg {
  background: radial-gradient(ellipse at 80% 0%, rgba(59,130,246,0.25) 0%, transparent 65%),
              radial-gradient(ellipse at 10% 100%, rgba(59,130,246,0.1) 0%, transparent 50%);
}
.bio-hero-bg {
  background: radial-gradient(ellipse at 80% 0%, rgba(0,223,162,0.2) 0%, transparent 65%),
              radial-gradient(ellipse at 10% 100%, rgba(0,223,162,0.08) 0%, transparent 50%);
}
.qui-hero-bg {
  background: radial-gradient(ellipse at 80% 0%, rgba(255,201,60,0.2) 0%, transparent 65%),
              radial-gradient(ellipse at 10% 100%, rgba(255,201,60,0.08) 0%, transparent 50%);
}

.mat-hero-content {
  position: relative;
  z-index: 1;
}
.mat-back-btn {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  margin-bottom: 16px;
  color: var(--text2);
  transition: background 0.2s;
}
.mat-back-btn:hover { background: rgba(255,255,255,0.1); }

.mat-hero-icon {
  width: 52px; height: 52px;
  border-radius: 16px;
  background: rgba(111,92,232,0.12);
  border: 1px solid rgba(111,92,232,0.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  font-weight: 900;
  color: #8f7fff;
  margin-bottom: 12px;
  letter-spacing: -1px;
}
.mat-hero-name {
  font-size: 26px;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.8px;
  margin-bottom: 3px;
}
.mat-hero-sub {
  font-size: 12px;
  color: var(--text3);
  font-weight: 400;
  margin-bottom: 20px;
}

/* ── ANEL DE PROGRESSO SVG ── */
.mat-progress-ring-wrap {
  position: relative;
  width: 120px; height: 120px;
}
.mat-ring {
  width: 120px; height: 120px;
  transform: rotate(-90deg);
}
.ring-bg {
  fill: none;
  stroke: rgba(255,255,255,0.06);
  stroke-width: 8;
}
.ring-fill {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s cubic-bezier(0.34,1.2,0.64,1);
}
.ring-mat { stroke: #6f5ce8; filter: drop-shadow(0 0 6px rgba(111,92,232,0.6)); }
.ring-fis { stroke: #3b82f6; filter: drop-shadow(0 0 6px rgba(59,130,246,0.6)); }
.ring-bio { stroke: #00dfa2; filter: drop-shadow(0 0 6px rgba(0,223,162,0.5)); }
.ring-qui { stroke: #ffc93c; filter: drop-shadow(0 0 6px rgba(255,201,60,0.5)); }

.mat-ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.ring-pct {
  font-size: 22px;
  font-weight: 900;
  color: #8f7fff;
  letter-spacing: -1px;
  font-family: var(--mono);
}
.ring-txt {
  font-size: 9px;
  color: var(--text3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: 1px;
}

/* ── SCROLL ÁREA ── */
.materia-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 20px 20px;
  scrollbar-width: none;
}
.materia-scroll::-webkit-scrollbar { display: none; }

/* ── STATS ROW ── */
.mat-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}
.mat-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 6px;
  text-align: center;
}
.mst-val {
  font-size: 14px;
  font-weight: 800;
  color: #8f7fff;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
.mst-lbl {
  font-size: 9px;
  color: var(--text3);
  margin-top: 3px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── SECTION LABEL ── */
.mat-sec-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text3);
  margin-bottom: 10px;
  margin-top: 4px;
}

/* ── TÓPICOS ── */
.topico-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.topico-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  transition: background 0.2s;
  cursor: default;
}
.topico-item:hover { background: var(--surface2); }
.topico-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}
.topico-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  font-weight: 800;
  flex-shrink: 0;
}
.topico-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topico-meta { font-size: 10px; color: var(--text3); margin-top: 1px; }
.topico-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
  width: 70px;
}
.topico-bar-wrap {
  width: 100%;
  height: 4px;
  background: var(--surface3);
  border-radius: 2px;
  overflow: hidden;
}
.topico-bar {
  height: 100%;
  border-radius: 2px;
  transition: width 0.8s cubic-bezier(0.34,1.2,0.64,1);
}
.topico-pct {
  font-size: 10px;
  font-weight: 700;
  font-family: var(--mono);
}

/* ── ATIVIDADES ── */
.atividade-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.atividade-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.atv-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.atv-info { flex: 1; }
.atv-name { font-size: 12px; font-weight: 600; color: var(--text); }
.atv-time { font-size: 10px; color: var(--text3); margin-top: 1px; }
.atv-badge {
  width: 26px; height: 26px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

/* ── BIO: DICA CARD ── */
.bio-dica-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(0,223,162,0.06);
  border: 1px solid rgba(0,223,162,0.15);
  border-radius: 14px;
  padding: 14px;
  margin-top: 4px;
  margin-bottom: 4px;
}
.bio-dica-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.bio-dica-text { font-size: 12px; color: var(--text2); line-height: 1.6; }

/* ── QUI: START CARD ── */
.qui-start-card {
  background: linear-gradient(135deg, rgba(255,201,60,0.1) 0%, rgba(255,201,60,0.04) 100%);
  border: 1px solid rgba(255,201,60,0.2);
  border-radius: 20px;
  padding: 22px;
  text-align: center;
  margin-bottom: 20px;
}
.qui-start-icon { font-size: 32px; margin-bottom: 10px; }
.qui-start-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.qui-start-desc {
  font-size: 12px;
  color: var(--text3);
  line-height: 1.6;
  margin-bottom: 16px;
}
.qui-start-btn {
  display: inline-block;
  background: #ffc93c;
  color: #08080f;
  font-size: 13px;
  font-weight: 800;
  padding: 12px 22px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(255,201,60,0.3);
}
.qui-start-btn:hover {
  box-shadow: 0 8px 24px rgba(255,201,60,0.45);
  transform: translateY(-1px);
}
.qui-start-btn:active { transform: scale(0.97); }

/* ═══════════════════════════════════════
   SCREEN: VER TODAS MATÉRIAS
═══════════════════════════════════════ */
.materias-all-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 20px;
  scrollbar-width: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.materias-all-scroll::-webkit-scrollbar { display: none; }

.matall-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
}
.matall-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(255,255,255,0.02));
  pointer-events: none;
}
.matall-card:hover { background: var(--surface2); border-color: var(--border2); }
.matall-card:active { transform: scale(0.98); }

.matall-left {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex: 1;
  min-width: 0;
}
.matall-icon {
  width: 46px; height: 46px;
  border-radius: 14px;
  border: 1px solid transparent;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  font-weight: 900;
  flex-shrink: 0;
}
.matall-info { flex: 1; min-width: 0; }
.matall-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
  margin-bottom: 3px;
}
.matall-meta {
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 8px;
}
.matall-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.matall-tag {
  font-size: 10px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 100px;
  letter-spacing: 0.1px;
}

.matall-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
  width: 72px;
}
.matall-pct {
  font-size: 18px;
  font-weight: 800;
  font-family: var(--mono);
  letter-spacing: -1px;
}
.matall-bar-bg {
  width: 100%;
  height: 5px;
  background: var(--surface3);
  border-radius: 3px;
  overflow: hidden;
}
.matall-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s cubic-bezier(0.34,1.2,0.64,1);
}
.matall-arrow {
  font-size: 18px;
  color: var(--text3);
  line-height: 1;
}

/* Resumo geral na parte inferior */
.matall-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 4px;
}
.matall-sum-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 10px;
  text-align: center;
}
.mas-val {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  font-family: var(--mono);
  letter-spacing: -1px;
}
.mas-lbl {
  font-size: 10px;
  color: var(--text3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-top: 4px;
}

/* ═══════════════════════════════════════
   MODAL: IDIOMA DO RESUMO (BOTTOM SHEET)
═══════════════════════════════════════ */
.lang-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0);
  z-index: 500;
  pointer-events: none;
  transition: background 0.3s;
}
.lang-overlay.show {
  background: rgba(0,0,0,0.55);
  pointer-events: all;
}

.lang-sheet {
  position: fixed;
  bottom: 0; left: 50%;
  transform: translateX(-50%) translateY(100%);
  width: 390px;
  background: var(--surface2);
  border-radius: 28px 28px 0 0;
  border-top: 1px solid var(--border2);
  z-index: 600;
  padding: 12px 0 32px;
  transition: transform 0.42s cubic-bezier(0.32, 0.72, 0, 1);
  box-shadow: 0 -20px 60px rgba(0,0,0,0.5);
}
.lang-sheet.show {
  transform: translateX(-50%) translateY(0);
}

.lang-sheet-handle {
  width: 36px; height: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  margin: 0 auto 18px;
}
.lang-sheet-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  text-align: center;
  letter-spacing: -0.3px;
  margin-bottom: 4px;
}
.lang-sheet-sub {
  font-size: 11px;
  color: var(--text3);
  text-align: center;
  margin-bottom: 16px;
}

.lang-list {
  display: flex;
  flex-direction: column;
  padding: 0 16px;
  gap: 4px;
  max-height: 340px;
  overflow-y: auto;
  scrollbar-width: none;
}
.lang-list::-webkit-scrollbar { display: none; }

.lang-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  cursor: pointer;
  transition: background 0.18s;
}
.lang-item:hover { background: var(--surface3); }
.lang-item-active {
  background: rgba(111,92,232,0.12) !important;
  border: 1px solid rgba(111,92,232,0.2);
}

.lang-flag { font-size: 22px; flex-shrink: 0; line-height: 1; }
.lang-info { flex: 1; }
.lang-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.lang-code {
  font-size: 10px;
  color: var(--text3);
  font-family: var(--mono);
  margin-top: 1px;
}
.lang-check {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s, transform 0.2s cubic-bezier(0.34,1.56,0.64,1);
}
.lang-item-active .lang-check {
  opacity: 1;
  transform: scale(1);
}

.lang-done-btn {
  margin: 14px 16px 0;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  padding: 15px;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(111,92,232,0.35);
  letter-spacing: 0.2px;
}
.lang-done-btn:hover { box-shadow: 0 8px 24px rgba(111,92,232,0.5); }
.lang-done-btn:active { transform: scale(0.97); }

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

/* Fix sheet positioning inside phone frame */
@media (min-width: 401px) {
  .lang-sheet {
    width: 390px;
    left: 50%;
  }
}

/* ═══════════════════════════════════════
   SCREEN: FLASHCARDS
═══════════════════════════════════════ */
.fc-header {
  padding: 14px 20px;
  display: flex; align-items: center; gap: 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.fc-title-group { flex: 1; }
.fc-title { font-size: 16px; font-weight: 700; color: var(--text); }
.fc-sub { font-size: 11px; color: var(--text3); margin-top: 1px; }

.fc-container {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 20px;
  perspective: 1000px;
}
.fc-progress { font-size: 12px; color: var(--text3); margin-bottom: 20px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

.flashcard {
  width: 100%; max-width: 320px; height: 380px;
  position: relative;
  cursor: pointer;
  background: transparent;
}
.flashcard-inner {
  position: absolute; width: 100%; height: 100%;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-style: preserve-3d;
}
.flashcard.flipped .flashcard-inner {
  transform: rotateY(180deg);
}
.fc-side {
  position: absolute; width: 100%; height: 100%;
  -webkit-backface-visibility: hidden; backface-visibility: hidden;
  border-radius: 20px;
  padding: 24px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  border: 1px solid var(--border);
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}
.fc-front {
  background: linear-gradient(135deg, var(--surface), var(--surface2));
}
.fc-front-icon { font-size: 40px; margin-bottom: 20px; }
.fc-front-title { font-size: 12px; color: var(--accent-l); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 700; margin-bottom: 12px; }
.fc-front-text { font-size: 20px; font-weight: 600; color: var(--text); line-height: 1.4; }
.fc-tap-hint { position: absolute; bottom: 20px; font-size: 11px; color: var(--text3); font-weight: 500; }

.fc-back {
  background: linear-gradient(135deg, rgba(111,92,232,0.1), rgba(111,92,232,0.03));
  border-color: rgba(111,92,232,0.3);
  transform: rotateY(180deg);
}
.fc-ans-title { font-size: 11px; color: var(--accent-l); text-transform: uppercase; letter-spacing: 1px; font-weight: 700; margin-bottom: 12px; }
.fc-ans-text { font-size: 18px; color: var(--text); line-height: 1.5; margin-bottom: 30px; }
.fc-actions {
  display: flex; gap: 12px; width: 100%; margin-top: auto;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.flashcard.flipped .fc-actions { opacity: 1; pointer-events: all; }

.fc-btn {
  flex: 1; padding: 14px; border-radius: 12px; font-size: 13px; font-weight: 800; cursor: pointer; transition: 0.2s;
  border: none;
}
.fc-btn:active { transform: scale(0.95); }
.fc-btn.wrong { background: rgba(255,79,106,0.15); color: var(--red); border: 1px solid rgba(255,79,106,0.3); }
.fc-btn.correct { background: rgba(0,223,162,0.15); color: var(--green); border: 1px solid rgba(0,223,162,0.3); }

/* ═══════════════════════════════════════
   SCREEN: EXAM
═══════════════════════════════════════ */
.ex-scroll { flex: 1; overflow-y: auto; padding: 20px; scrollbar-width: none; }
.ex-scroll::-webkit-scrollbar { display: none; }
.ex-progress {
  display: flex; align-items: center; gap: 10px; margin-bottom: 24px;
}
.ex-prog-bar { flex: 1; height: 6px; background: var(--surface3); border-radius: 3px; position: relative; overflow: hidden; }
.ex-prog-fill { height: 100%; background: var(--green); width: 25%; transition: width 0.3s; }
.ex-prog-text { font-size: 12px; font-weight: 700; color: var(--text3); font-family: var(--mono); }

.ex-question-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 20px; margin-bottom: 20px;
}
.ex-qnum { font-size: 11px; color: var(--accent-l); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 700; margin-bottom: 12px; }
.ex-qtext { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.5; }

.ex-options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px;}
.ex-option {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px;
  display: flex; align-items: flex-start; gap: 12px; cursor: pointer; transition: 0.2s;
}
.ex-option:active { transform: scale(0.98); }
.ex-opt-letter {
  width: 28px; height: 28px; border-radius: 8px; background: var(--surface3); display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 800; color: var(--text3); flex-shrink: 0; margin-top: -2px;
}
.ex-opt-text { flex: 1; font-size: 14px; color: var(--text); font-weight: 500; line-height: 1.4; }

.ex-option.selected { border-color: var(--accent); background: rgba(111,92,232,0.1); }
.ex-option.selected .ex-opt-letter { background: var(--accent); color: #fff; }

.ex-option.correct { border-color: var(--green); background: rgba(0,223,162,0.1); pointer-events: none; }
.ex-option.correct .ex-opt-letter { background: var(--green); color: #08080f; }

.ex-option.wrong { border-color: var(--red); background: rgba(255,79,106,0.1); pointer-events: none; }
.ex-option.wrong .ex-opt-letter { background: var(--red); color: #fff; }

.ex-check-btn {
  width: 100%; background: var(--accent); color: #fff; font-size: 14px; font-weight: 700; padding: 16px; border-radius: 16px; border: none; cursor: pointer; display: none; transition: 0.2s; box-shadow: 0 4px 16px rgba(111,92,232,0.3);
}
.ex-check-btn:hover { box-shadow: 0 8px 24px rgba(111,92,232,0.5); }
.ex-check-btn.show { display: block; }

/* ═══════════════════════════════════════
   SCREEN: EXAM RESULT
═══════════════════════════════════════ */
.res-circle {
  width: 100px; height: 100px; border-radius: 50%;
  background: var(--surface2); border: 4px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 800; color: var(--text); font-family: var(--mono);
  margin-bottom: 20px;
}
.res-title { font-size: 22px; font-weight: 800; color: var(--text); margin-bottom: 8px; text-align: center; }
.res-sub { font-size: 14px; color: var(--text3); text-align: center; line-height: 1.4; }

.res-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px;
  display: flex; align-items: flex-start; gap: 14px;
}
.res-item-icon {
  width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 800; color: var(--bg); flex-shrink: 0;
}
.res-item-icon.right { background: var(--green); }
.res-item-icon.wrong { background: var(--red); }
.res-item-text { font-size: 14px; color: var(--text); font-weight: 500; line-height: 1.4; flex: 1; }