/* ===== Design Tokens ===== */
:root {
  --c-primary-900: #0B2118;
  --c-primary-800: #1B4332;
  --c-primary-700: #2D6A4F;
  --c-primary-600: #40916C;
  --c-primary-500: #52B788;
  --c-primary-400: #74C69D;
  --c-primary-300: #95D5B2;
  --c-primary-200: #B7E4C7;
  --c-primary-100: #D8F3DC;
  --c-primary-50: #F0FBF4;

  --c-surface: #F6FAF8;
  --c-surface-alt: #EAF2ED;
  --c-card: #FFFFFF;
  --c-text: #1A1A2E;
  --c-text-2: #4A5568;
  --c-text-3: #9CA3AF;
  --c-border: #E2E8F0;

  --c-accent: #E76F51;
  --c-accent-bg: #FEF0EC;
  --c-teal: #2EC4B6;
  --c-teal-bg: #E8FAF8;
  --c-danger: #EF4444;
  --c-danger-bg: #FEE2E2;

  --shadow-xs: 0 1px 2px rgba(27,67,50,.06);
  --shadow-sm: 0 2px 6px rgba(27,67,50,.08);
  --shadow-md: 0 4px 16px rgba(27,67,50,.10);
  --shadow-lg: 0 8px 30px rgba(27,67,50,.12);

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-full: 9999px;

  --font-ui: 'Inter', 'Noto Sans KR', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-kr: 'Noto Sans KR', sans-serif;

  --header-h: 64px;
  --nav-h: 64px;
  --safe-b: env(safe-area-inset-bottom, 0px);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-ui);
  background: var(--c-surface);
  color: var(--c-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }
img { max-width: 100%; display: block; }

/* ===== App Layout ===== */
.app-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: linear-gradient(135deg, var(--c-primary-800) 0%, var(--c-primary-700) 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 0 20px;
  box-shadow: 0 2px 12px rgba(11,33,24,.25);
}
.app-header .logo { text-align: center; }
.app-header .logo h1 {
  font-family: var(--font-jp);
  font-size: 1.25rem; font-weight: 700; color: #fff;
  letter-spacing: 1px;
}
.app-header .logo p {
  font-family: var(--font-kr);
  font-size: .7rem; color: var(--c-primary-300);
  margin-top: -2px; letter-spacing: .5px;
}

main {
  padding-top: var(--header-h);
  padding-bottom: calc(var(--nav-h) + var(--safe-b) + 8px);
  min-height: 100vh;
  min-height: 100dvh;
}

.tab-content { display: none; padding: 20px 16px; animation: fadeIn .3s ease; }
.tab-content.active { display: block; }

/* ===== Bottom Nav ===== */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  height: calc(var(--nav-h) + var(--safe-b));
  padding-bottom: var(--safe-b);
  background: var(--c-card);
  border-top: 1px solid var(--c-border);
  display: flex; align-items: stretch;
  box-shadow: 0 -2px 12px rgba(27,67,50,.06);
}
.nav-item {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 3px; color: var(--c-text-3);
  transition: color .2s, transform .15s;
  position: relative;
}
.nav-item svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; }
.nav-item span { font-size: .65rem; font-weight: 600; letter-spacing: .3px; }
.nav-item.active { color: var(--c-primary-700); }
.nav-item.active::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 32px; height: 3px; border-radius: 0 0 3px 3px;
  background: var(--c-primary-600);
}
.nav-item:active { transform: scale(.92); }

/* ===== Mic Area ===== */
.mic-area {
  display: flex; flex-direction: column; align-items: center;
  padding: 32px 0 24px; gap: 16px;
}
.mic-btn {
  position: relative;
  width: 88px; height: 88px; border-radius: 50%;
  background: linear-gradient(145deg, var(--c-primary-700), var(--c-primary-800));
  color: #fff; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(27,67,50,.3);
  transition: transform .2s, box-shadow .2s;
}
.mic-btn svg { width: 36px; height: 36px; fill: #fff; stroke: none; }
.mic-btn:active { transform: scale(.94); }

.mic-btn.listening {
  background: linear-gradient(145deg, var(--c-primary-600), var(--c-primary-500));
  box-shadow: 0 4px 24px rgba(82,183,136,.4);
}
.mic-btn.listening::before,
.mic-btn.listening::after {
  content: ''; position: absolute; inset: -8px;
  border-radius: 50%; border: 2px solid var(--c-primary-400);
  animation: pulse-ring 2s ease-out infinite;
}
.mic-btn.listening::after { inset: -18px; animation-delay: .4s; }

.mic-status {
  font-size: .85rem; color: var(--c-text-2); font-weight: 500; text-align: center;
}
.mic-status.active { color: var(--c-primary-600); font-weight: 600; }
.mic-hint {
  font-size: .72rem; color: var(--c-text-3); text-align: center;
  max-width: 260px; line-height: 1.5; margin-top: -4px;
}

/* Waveform */
.waveform {
  display: none; align-items: center; gap: 3px; height: 28px;
}
.waveform.active { display: flex; }
.waveform span {
  display: block; width: 3px; border-radius: 2px;
  background: var(--c-primary-500);
}
.waveform span:nth-child(1) { height: 10px; animation: wave 1s ease-in-out .0s infinite; }
.waveform span:nth-child(2) { height: 18px; animation: wave 1s ease-in-out .1s infinite; }
.waveform span:nth-child(3) { height: 24px; animation: wave 1s ease-in-out .2s infinite; }
.waveform span:nth-child(4) { height: 18px; animation: wave 1s ease-in-out .3s infinite; }
.waveform span:nth-child(5) { height: 10px; animation: wave 1s ease-in-out .4s infinite; }

/* Waveform real-audio mode: when AudioContext drives the bars */
.waveform.active span {
  transition: transform 0.08s ease-out;
}

/* Listen Timer */
.listen-timer {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: 'Inter', monospace;
  font-size: .95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--c-primary-700);
  background: var(--c-primary-50);
  padding: 6px 16px;
  border-radius: var(--r-full);
  border: 1.5px solid var(--c-primary-200);
  animation: fadeIn .3s ease;
}
.listen-timer .timer-sep {
  color: var(--c-text-3);
  font-weight: 400;
  margin: 0 2px;
}

/* ===== Confidence Indicator ===== */
.confidence-indicator {
  width: 100%;
  max-width: 220px;
  padding: 8px 0 0;
  animation: fadeIn .3s ease;
}
.confidence-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .68rem;
  font-weight: 600;
  color: var(--c-text-3);
  margin-bottom: 5px;
}
.confidence-label svg {
  stroke: var(--c-primary-500);
  flex-shrink: 0;
}
.confidence-value {
  margin-left: auto;
  font-weight: 700;
  font-size: .72rem;
  font-variant-numeric: tabular-nums;
}
.confidence-track {
  width: 100%;
  height: 4px;
  background: var(--c-border);
  border-radius: var(--r-full);
  overflow: hidden;
}
.confidence-bar {
  height: 100%;
  border-radius: var(--r-full);
  transition: width .4s ease, background .3s ease;
}
.confidence-bar.high {
  background: linear-gradient(90deg, var(--c-primary-500), var(--c-primary-400));
}
.confidence-bar.medium {
  background: linear-gradient(90deg, #F59E0B, #FBBF24);
}
.confidence-bar.low {
  background: linear-gradient(90deg, #EF4444, #F87171);
}

/* ===== Transcript ===== */
.transcript-area { margin-top: 4px; }
.section-label {
  font-size: .75rem; font-weight: 700; color: var(--c-primary-700);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px;
}
.transcript-box {
  background: var(--c-card); border-radius: var(--r-lg); padding: 16px;
  min-height: 80px; max-height: 160px; overflow-y: auto;
  box-shadow: var(--shadow-xs); border: 1px solid var(--c-border);
  font-family: var(--font-kr); font-size: .9rem; line-height: 1.7;
  color: var(--c-text);
  position: relative;
}
.transcript-box.empty { color: var(--c-text-3); font-style: italic; font-size: .85rem; }
.transcript-actions {
  display: flex; gap: 8px; margin-top: 12px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 12px 20px; border-radius: var(--r-md); font-size: .875rem; font-weight: 600;
  transition: all .2s; min-height: 44px;
}
.btn:active { transform: scale(.96); }
.btn-primary {
  background: linear-gradient(135deg, var(--c-primary-700), var(--c-primary-600));
  color: #fff; box-shadow: 0 2px 8px rgba(45,106,79,.3);
  flex: 1;
}
.btn-primary:hover { box-shadow: 0 4px 16px rgba(45,106,79,.35); }
.btn-primary:disabled {
  background: var(--c-text-3); box-shadow: none; cursor: not-allowed; opacity: .6;
}
.btn-outline {
  border: 1.5px solid var(--c-border); color: var(--c-text-2);
  background: var(--c-card);
}
.btn-outline:hover { border-color: var(--c-primary-400); color: var(--c-primary-700); }
.btn-danger-outline {
  border: 1.5px solid var(--c-danger); color: var(--c-danger);
  background: var(--c-card);
}
.btn-danger-outline:hover { background: var(--c-danger-bg); }
.btn-sm { padding: 8px 14px; font-size: .8rem; min-height: 36px; }
.btn-icon {
  width: 40px; height: 40px; padding: 0; border-radius: var(--r-full);
  display: flex; align-items: center; justify-content: center;
}

/* ===== Expression Card ===== */
.results-area { margin-top: 24px; }
.card-list { display: flex; flex-direction: column; gap: 10px; }

.expr-card {
  background: var(--c-card); border-radius: var(--r-lg);
  border-left: 4px solid var(--c-primary-600);
  box-shadow: var(--shadow-sm);
  animation: slideUp .4s ease;
  transition: box-shadow .2s;
  overflow: hidden;
}
.expr-card:hover { box-shadow: var(--shadow-md); }

/* -- Collapsed summary row -- */
.card-summary {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; gap: 10px;
  cursor: pointer; user-select: none;
  transition: background .15s;
}
.card-summary:hover { background: var(--c-primary-50); }
.card-summary:focus-visible { outline: 2px solid var(--c-primary-500); outline-offset: -2px; }
.card-summary-content {
  display: flex; flex-direction: column; gap: 2px;
  min-width: 0; flex: 1;
}
.card-summary-jp {
  font-family: var(--font-jp); font-size: 1rem; font-weight: 700;
  color: var(--c-primary-800); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.card-summary-kr {
  font-family: var(--font-kr); font-size: .78rem;
  color: var(--c-text-2); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.card-summary-right {
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
}
.card-chevron {
  stroke: var(--c-text-3);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}

/* -- Expand / collapse states -- */
.expr-card-collapsed .card-detail {
  max-height: 0; opacity: 0; overflow: hidden;
  transition: max-height .35s cubic-bezier(.4,0,.2,1), opacity .25s ease;
}
.expr-card-expanded .card-detail {
  max-height: 1200px; opacity: 1;
  transition: max-height .45s cubic-bezier(.4,0,.2,1), opacity .3s ease .05s;
}
.expr-card-expanded .card-chevron {
  transform: rotate(180deg);
}
.expr-card-expanded .card-summary {
  border-bottom: 1px solid var(--c-border);
}

/* -- Detail inner content -- */
.card-detail { padding: 0 16px; }
.expr-card-expanded .card-detail { padding: 14px 16px 16px; }

.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; gap: 8px; }
.style-badge, .importance-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: var(--r-full);
  font-size: .7rem; font-weight: 700; letter-spacing: .3px;
}
.style-badge.casual { background: var(--c-accent-bg); color: var(--c-accent); }
.style-badge.polite { background: var(--c-teal-bg); color: var(--c-teal); }

.importance-badge.importance-essential { background: #FEE2E2; color: #DC2626; }
.importance-badge.importance-frequent { background: #FEF3C7; color: #D97706; }
.importance-badge.importance-useful { background: #D1FAE5; color: #059669; }

.card-korean {
  font-family: var(--font-kr); font-size: .85rem;
  color: var(--c-text-2); margin-bottom: 12px;
  padding-bottom: 10px; border-bottom: 1px dashed var(--c-border);
}

.card-japanese {
  font-family: var(--font-jp); font-size: 1.2rem; font-weight: 700;
  color: var(--c-primary-800); line-height: 1.5; margin-bottom: 4px;
}
.card-reading {
  font-family: var(--font-jp); font-size: .82rem;
  color: var(--c-primary-600); margin-bottom: 2px;
}
.card-pronunciation {
  font-family: var(--font-kr); font-size: .8rem;
  color: var(--c-text-2); margin-bottom: 12px;
  background: var(--c-primary-50); display: inline-block;
  padding: 2px 8px; border-radius: var(--r-sm);
}

.card-example {
  background: #F5F3FF; border-radius: var(--r-sm);
  padding: 12px; margin-bottom: 10px;
  line-height: 1.6;
}
.card-example .label {
  font-weight: 700; color: #7C3AED; margin-bottom: 4px;
  font-size: .72rem; letter-spacing: .5px;
  font-family: var(--font-kr);
}
.card-example .example-jp {
  font-family: var(--font-jp); font-size: .85rem; color: #5B21B6;
}
.card-example .example-pronunciation {
  font-family: var(--font-kr); font-size: .78rem;
  color: #7C3AED; margin-top: 4px;
  opacity: .85;
}

.card-explanation {
  background: var(--c-primary-50); border-radius: var(--r-sm);
  padding: 12px; margin-bottom: 10px;
  font-size: .8rem; color: var(--c-text-2); line-height: 1.6;
}
.card-explanation .label {
  font-weight: 700; color: var(--c-primary-700); margin-bottom: 4px;
  font-size: .72rem; letter-spacing: .5px;
}

.card-alt {
  background: var(--c-surface-alt); border-radius: var(--r-sm);
  padding: 10px 12px; margin-bottom: 12px;
}
.card-alt .alt-label {
  font-size: .7rem; font-weight: 700; color: var(--c-text-3);
  margin-bottom: 4px; letter-spacing: .3px;
}
.card-alt .alt-jp {
  font-family: var(--font-jp); font-size: .95rem;
  color: var(--c-text); font-weight: 500;
}
.card-alt .alt-reading {
  font-family: var(--font-jp); font-size: .75rem; color: var(--c-text-3);
}
.card-alt .alt-pronunciation {
  font-family: var(--font-kr); font-size: .73rem;
  color: var(--c-text-2); margin-top: 2px;
}

.card-actions { display: flex; justify-content: flex-end; gap: 8px; }
.save-btn, .delete-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 7px 14px; border-radius: var(--r-full);
  font-size: .78rem; font-weight: 600; transition: all .2s;
}
.save-btn {
  background: var(--c-primary-100); color: var(--c-primary-700);
}
.save-btn:hover { background: var(--c-primary-200); }
.delete-btn { background: var(--c-danger-bg); color: var(--c-danger); }
.delete-btn:hover { background: #fecaca; }

.card-date {
  font-size: .7rem; color: var(--c-text-3); margin-top: 4px;
}

/* ===== Notes Tab ===== */
.search-bar {
  position: relative; margin-bottom: 12px;
}
.search-bar input {
  width: 100%; padding: 12px 16px 12px 42px;
  border: 1.5px solid var(--c-border); border-radius: var(--r-lg);
  background: var(--c-card); font-size: .875rem; color: var(--c-text);
  transition: border-color .2s;
  outline: none;
}
.search-bar input:focus { border-color: var(--c-primary-500); }
.search-bar input::placeholder { color: var(--c-text-3); }
.search-bar svg {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; stroke: var(--c-text-3);
}
.sort-controls {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px;
}
.sort-controls .count { font-size: .8rem; color: var(--c-text-3); font-weight: 500; }
.sort-controls select {
  padding: 6px 12px; border: 1px solid var(--c-border);
  border-radius: var(--r-sm); font-size: .8rem; color: var(--c-text-2);
  background: var(--c-card); outline: none;
}

.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 60px 20px; text-align: center;
}
.empty-state svg {
  width: 64px; height: 64px; stroke: var(--c-primary-300); margin-bottom: 16px;
}
.empty-state h3 { font-size: 1rem; color: var(--c-text-2); margin-bottom: 6px; }
.empty-state p { font-size: .82rem; color: var(--c-text-3); }

/* ===== Settings ===== */
.settings-group {
  background: var(--c-card); border-radius: var(--r-lg);
  padding: 20px; margin-bottom: 14px;
  box-shadow: var(--shadow-xs);
}
.settings-group h2 {
  font-size: .85rem; font-weight: 700; color: var(--c-primary-700);
  margin-bottom: 14px; letter-spacing: .5px;
}
.form-field { margin-bottom: 14px; }
.form-field label {
  display: block; font-size: .78rem; font-weight: 600;
  color: var(--c-text-2); margin-bottom: 6px;
}
.form-field input, .form-field select {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--c-border);
  border-radius: var(--r-md); font-size: .875rem; color: var(--c-text);
  background: var(--c-surface); outline: none; transition: border-color .2s;
}
.form-field input:focus, .form-field select:focus {
  border-color: var(--c-primary-500); background: #fff;
}
.settings-actions { display: flex; flex-direction: column; gap: 10px; }
.api-status {
  display: flex; align-items: center; gap: 6px;
  font-size: .78rem; font-weight: 500; margin-top: 6px;
}
.api-status.connected { color: var(--c-primary-600); }
.api-status.disconnected { color: var(--c-danger); }
.api-status .dot {
  width: 8px; height: 8px; border-radius: 50%;
}
.api-status.connected .dot { background: var(--c-primary-500); }
.api-status.disconnected .dot { background: var(--c-danger); }

.app-info {
  text-align: center; padding: 20px;
  font-size: .75rem; color: var(--c-text-3);
}

/* ===== Modal ===== */
.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(11,33,24,.5);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn .2s ease;
}
.modal-overlay.active { display: flex; }
.modal-content {
  background: var(--c-card); border-radius: var(--r-xl);
  padding: 28px 24px; width: 100%; max-width: 360px;
  box-shadow: var(--shadow-lg);
  animation: slideUp .3s ease;
}
.modal-content h2 {
  font-size: 1.1rem; font-weight: 700; color: var(--c-text); margin-bottom: 6px;
}
.modal-content p {
  font-size: .82rem; color: var(--c-text-2); margin-bottom: 18px; line-height: 1.5;
}

/* ===== Toast ===== */
.toast-container {
  position: fixed; bottom: calc(var(--nav-h) + var(--safe-b) + 16px);
  left: 50%; transform: translateX(-50%); z-index: 300;
  display: flex; flex-direction: column; gap: 8px; align-items: center;
  pointer-events: none;
}
.toast {
  background: var(--c-primary-800); color: #fff;
  padding: 10px 20px; border-radius: var(--r-full);
  font-size: .82rem; font-weight: 500;
  box-shadow: var(--shadow-md);
  animation: toastIn .3s ease, toastOut .3s ease 2.5s forwards;
  pointer-events: auto;
}

/* ===== Loading Skeleton ===== */
.skeleton-card {
  background: var(--c-card); border-radius: var(--r-lg);
  padding: 18px; border-left: 4px solid var(--c-primary-200);
  box-shadow: var(--shadow-xs);
}
.skeleton-line {
  height: 14px; border-radius: 4px; margin-bottom: 10px;
  background: linear-gradient(90deg, var(--c-surface-alt) 25%, var(--c-primary-100) 50%, var(--c-surface-alt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
.skeleton-line.w60 { width: 60%; }
.skeleton-line.w80 { width: 80%; }
.skeleton-line.w100 { width: 100%; }
.skeleton-line.h20 { height: 20px; }

/* ===== Animations ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse-ring {
  0% { opacity: .6; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.4); }
}
@keyframes wave {
  0%, 100% { transform: scaleY(.4); }
  50% { transform: scaleY(1); }
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(-8px); }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-primary-300); border-radius: 4px; }

/* ===== Utilities ===== */
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* ===== Ranking Tab ===== */
.ranking-header {
  text-align: center;
  padding: 24px 0 20px;
}
.ranking-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--c-primary-800);
  margin-bottom: 4px;
}
.ranking-subtitle {
  font-size: .8rem;
  color: var(--c-text-3);
}

.ranking-section {
  background: var(--c-card);
  border-radius: var(--r-lg);
  padding: 18px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-border);
}
.ranking-section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-border);
}
.ranking-section-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}
.ranking-section-header h3 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 2px;
}
.ranking-section-header p {
  font-size: .72rem;
  color: var(--c-text-3);
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ranking-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--r-md);
  background: var(--c-surface);
  transition: background .2s, transform .15s;
  animation: slideUp .3s ease;
}
.ranking-card:hover {
  background: var(--c-primary-50);
  transform: translateX(2px);
}
.ranking-card:nth-child(1) { background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%); border: 1px solid #FDE68A; }
.ranking-card:nth-child(2) { background: linear-gradient(135deg, #F8FAFC 0%, #E2E8F0 100%); border: 1px solid #CBD5E1; }
.ranking-card:nth-child(3) { background: linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%); border: 1px solid #FED7AA; }

.ranking-card-rank {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.rank-num {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .72rem;
  font-weight: 800;
  color: var(--c-text-3);
  background: var(--c-border);
  border-radius: 50%;
}

.ranking-card-content {
  flex: 1;
  min-width: 0;
}
.ranking-card-jp {
  font-family: var(--font-jp);
  font-size: .92rem;
  font-weight: 700;
  color: var(--c-primary-800);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ranking-card-kr {
  font-family: var(--font-kr);
  font-size: .75rem;
  color: var(--c-text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ranking-card-pron {
  font-family: var(--font-kr);
  font-size: .68rem;
  color: var(--c-text-3);
  margin-top: 1px;
}

.ranking-card-stat {
  flex-shrink: 0;
  text-align: right;
  min-width: 50px;
}
.ranking-card-count {
  font-size: .75rem;
  font-weight: 800;
  color: var(--c-primary-700);
  font-variant-numeric: tabular-nums;
}
.ranking-bar-track {
  width: 50px;
  height: 4px;
  background: var(--c-border);
  border-radius: var(--r-full);
  margin-top: 4px;
  overflow: hidden;
}
.ranking-bar-fill {
  height: 100%;
  border-radius: var(--r-full);
  background: linear-gradient(90deg, var(--c-primary-500), var(--c-primary-400));
  transition: width .6s ease;
}

.ranking-empty {
  text-align: center;
  padding: 24px 16px;
}
.ranking-empty p {
  font-size: .85rem;
  color: var(--c-text-2);
  font-weight: 600;
}
.ranking-empty-hint {
  font-size: .75rem !important;
  color: var(--c-text-3) !important;
  font-weight: 400 !important;
  margin-top: 4px;
}

.ranking-connection-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--r-md);
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  margin-bottom: 14px;
  font-size: .75rem;
  color: var(--c-text-2);
  line-height: 1.4;
}
.ranking-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ranking-status-dot.online {
  background: var(--c-primary-500);
  box-shadow: 0 0 6px rgba(82, 183, 136, .5);
}
.ranking-status-dot.offline {
  background: var(--c-text-3);
}

/* ===== Study Paper Elements ===== */
.study-summary {
  background: linear-gradient(135deg, var(--c-primary-50) 0%, #F0F9FF 100%);
  border-radius: var(--r-lg); padding: 18px;
  border: 1px solid var(--c-primary-200);
  margin-bottom: 4px;
}
.study-summary-header {
  display: flex; align-items: center; gap: 8px;
  font-size: .82rem; font-weight: 700; color: var(--c-primary-700);
  margin-bottom: 10px;
}
.study-summary-header svg { stroke: var(--c-primary-600); flex-shrink: 0; }
.study-summary p {
  font-size: .84rem; color: var(--c-text-2); line-height: 1.7;
}

.importance-legend {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 14px; background: var(--c-card);
  border-radius: var(--r-md); border: 1px solid var(--c-border);
  margin-bottom: 4px;
}
.legend-item {
  display: flex; align-items: center; gap: 5px;
  font-size: .72rem; font-weight: 600; color: var(--c-text-2);
}
.legend-dot {
  width: 8px; height: 8px; border-radius: 50%;
}
.legend-dot.essential { background: #DC2626; }
.legend-dot.frequent { background: #D97706; }
.legend-dot.useful { background: #059669; }

.study-tips {
  background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
  border-radius: var(--r-lg); padding: 18px;
  border: 1px solid #FDE68A;
  margin-top: 4px;
}
.study-tips-header {
  display: flex; align-items: center; gap: 8px;
  font-size: .82rem; font-weight: 700; color: #92400E;
  margin-bottom: 10px;
}
.study-tips-header svg { stroke: #D97706; flex-shrink: 0; }
.study-tips ul {
  list-style: none; padding: 0;
}
.study-tips li {
  font-size: .82rem; color: #78350F; line-height: 1.6;
  padding: 6px 0 6px 16px; position: relative;
}
.study-tips li::before {
  content: '💡'; position: absolute; left: 0; top: 6px; font-size: .7rem;
}
.study-tips li + li {
  border-top: 1px dashed rgba(217, 119, 6, .2);
}

/* ===== Security Banner ===== */
.security-banner {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  background: linear-gradient(135deg, #FEF2F2 0%, #FEE2E2 100%);
  border-bottom: 2px solid #FCA5A5;
  padding: 16px 20px;
  animation: slideDown .3s ease;
}
.security-banner-content {
  display: flex; align-items: flex-start; gap: 12px;
  max-width: 400px; margin: 0 auto;
}
.security-banner-content svg {
  stroke: #DC2626; flex-shrink: 0; margin-top: 2px;
}
.security-banner-content strong {
  font-size: .85rem; color: #991B1B; display: block; margin-bottom: 4px;
}
.security-banner-content p {
  font-size: .78rem; color: #7F1D1D; line-height: 1.5; margin-bottom: 8px;
}
.security-banner-link {
  display: inline-flex; align-items: center; gap: 4px;
  background: #DC2626; color: #fff;
  padding: 8px 16px; border-radius: var(--r-full);
  font-size: .8rem; font-weight: 600;
  text-decoration: none;
  transition: background .2s;
}
.security-banner-link:hover { background: #B91C1C; }

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-100%); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== PWA Install Banner ===== */
#install-banner {
  position: fixed;
  bottom: 70px;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 0 12px;
  transform: translateY(120%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#install-banner.show {
  transform: translateY(0);
}

.install-banner-content {
  background: linear-gradient(135deg, #1B4332, #2D6A4F);
  border-radius: 16px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25),
              0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.install-banner-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: #fff;
  flex: 1;
  min-width: 0;
}

.install-banner-text strong {
  font-size: 15px;
  font-weight: 600;
}

.install-banner-text span {
  font-size: 12px;
  opacity: 0.85;
  line-height: 1.3;
}

.install-banner-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.install-btn-accept {
  background: #fff;
  color: #1B4332;
  border: none;
  padding: 8px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.install-btn-accept:hover {
  background: #D8F3DC;
  transform: scale(1.05);
}

.install-btn-dismiss {
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.install-btn-dismiss:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

/* ===== Settings Install Section ===== */
.install-description {
  font-size: .82rem;
  color: var(--c-text-2);
  line-height: 1.5;
  margin-bottom: 14px;
}

.install-guide {
  margin-top: 14px;
}
.install-guide-section {
  background: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 100%);
  border: 1px solid #BAE6FD;
  border-radius: var(--r-md);
  padding: 14px 16px;
  margin-bottom: 8px;
  animation: slideUp .3s ease;
}
.install-guide-section p {
  font-size: .85rem;
  color: #0369A1;
  margin-bottom: 8px;
}
.install-guide-section ol {
  padding-left: 20px;
  margin: 0;
}
.install-guide-section li {
  font-size: .82rem;
  color: #0C4A6E;
  line-height: 1.8;
  padding: 2px 0;
}

.install-status {
  margin-top: 10px;
  font-size: .78rem;
  font-weight: 600;
  text-align: center;
  padding: 6px 0;
  border-radius: var(--r-sm);
  transition: all .3s;
}
.install-status:empty {
  display: none;
}
.install-status.ready {
  color: var(--c-primary-600);
  background: var(--c-primary-50);
}
.install-status.installed {
  color: var(--c-primary-700);
  background: var(--c-primary-100);
}

/* ===== Mic Permission Guide ===== */
.mic-permission-guide {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 0 12px 12px;
  transform: translateY(120%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.mic-permission-guide.show {
  transform: translateY(0);
}
.mic-permission-guide-content {
  background: var(--c-card);
  border-radius: var(--r-xl);
  padding: 20px;
  box-shadow: 0 -4px 32px rgba(0, 0, 0, 0.15),
              0 0 0 1px var(--c-border);
  max-width: 400px;
  margin: 0 auto;
}
.mic-permission-guide-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-border);
}
.mic-permission-guide-header span {
  font-size: .92rem;
  font-weight: 700;
  color: var(--c-primary-800);
}
.mic-permission-guide-close {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-surface-alt);
  color: var(--c-text-3);
  font-size: .85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s, color .2s;
  border: none;
}
.mic-permission-guide-close:hover {
  background: var(--c-danger-bg);
  color: var(--c-danger);
}
.mic-permission-guide-content p {
  font-size: .85rem;
  color: var(--c-text);
  margin-bottom: 8px;
}
.mic-permission-guide-content ol {
  padding-left: 20px;
  margin: 0;
}
.mic-permission-guide-content li {
  font-size: .82rem;
  color: var(--c-text-2);
  line-height: 1.8;
  padding: 2px 0;
}

/* Standalone PWA adjustments */
.pwa-standalone .bottom-nav {
  padding-bottom: env(safe-area-inset-bottom, 0px);
}