:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-2: #ededf2;
  --surface-hover: #e4e4ec;
  --border: #dcdce8;
  --border-2: #c8c8d8;
  --text-1: #18181c;
  --text-2: #505068;
  --text-3: #8a8aa4;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --accent-glow: rgba(13, 148, 136, 0.14);
  --accent-dim: rgba(13, 148, 136, 0.08);
  --live: #dc2626;
  --transl-color: #065f46;
  --orig-color: #1d4ed8;
  --success: #059669;
  --warning: #d97706;
  --error: #dc2626;
  --font-ui: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-text: 'Lora', 'Noto Serif SC', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --font-display: var(--font-text);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.18);
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
  --color-bg: var(--bg);
  --color-surface: var(--surface);
  --color-surface-elevated: var(--surface-2);
  --color-text-primary: var(--text-1);
  --color-text-secondary: var(--text-2);
  --color-text-tertiary: var(--text-3);
  --color-border: var(--border);
  --color-border-light: var(--border-2);
  --color-accent: var(--accent);
  --color-accent-hover: var(--accent-hover);
  --color-error: var(--error);
}

[data-theme="dark"] {
  --bg: #0c0c0f;
  --surface: #161619;
  --surface-2: #1e1e24;
  --surface-hover: #252530;
  --border: #2b2b36;
  --border-2: #393948;
  --text-1: #f0f0f3;
  --text-2: #8a8aa0;
  --text-3: #62627a;
  --accent: #2dd4bf;
  --accent-hover: #5eead4;
  --accent-glow: rgba(45, 212, 191, 0.12);
  --accent-dim: rgba(45, 212, 191, 0.08);
  --live: #f87171;
  --transl-color: #a7f3d0;
  --orig-color: #93c5fd;
  --success: #34d399;
  --warning: #fcd34d;
  --error: #f87171;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-1);
  background: var(--bg);
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.theme-icon-sun { display: none; }
.theme-icon-moon { display: block; }
[data-theme="dark"] .theme-icon-sun { display: block; }
[data-theme="dark"] .theme-icon-moon { display: none; }

.btn,
.btn-nav,
.btn-auth,
.btn-icon,
.btn-lang,
.link-button,
.feed-toggle-btn,
.feed-icon-btn {
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.42rem;
  min-height: 38px;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-1);
  background: var(--surface-2);
  text-decoration: none;
  white-space: nowrap;
}

.btn svg,
.btn-icon svg,
.feed-icon-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.btn:disabled {
  opacity: 0.38;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-stop {
  color: #fff;
  background: var(--live);
  border-color: var(--live);
}

.btn-ghost {
  color: var(--text-2);
  background: transparent;
  border-color: var(--border);
}

.btn-ghost:hover:not(:disabled) {
  color: var(--text-1);
  background: var(--surface-2);
  border-color: var(--border-2);
}

.btn-icon,
.topbar-btn,
.feed-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-3);
  background: transparent;
  text-decoration: none;
}

.btn-icon:hover,
.topbar-btn:hover,
.feed-icon-btn:hover {
  color: var(--text-1);
  background: var(--surface-2);
  border-color: var(--border-2);
}

.landing {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.landing-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0 2.5rem;
}

.nav-brand,
.brand-name {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text-1);
  text-decoration: none;
}

.nav-brand span,
.brand-name span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.btn-nav,
.btn-lang {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0.42rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-decoration: none;
}

.btn-nav:hover,
.btn-lang:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.btn-nav-solid {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.btn-nav-solid:hover {
  color: #fff;
  background: var(--accent-hover);
}

.theme-toggle {
  width: 32px;
  padding: 0;
}

.hero {
  text-align: center;
  padding: 3rem 0 4rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.9rem;
  border: 1px solid rgba(13, 148, 136, 0.24);
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  color: var(--text-1);
  margin-bottom: 1.25rem;
}

.hero-title em {
  color: var(--accent);
}

.hero-subtitle {
  max-width: 620px;
  margin: 0 auto 2.5rem;
  color: var(--text-2);
  font-size: 1.05rem;
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-hero-primary,
.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-hero-primary {
  border: 1px solid var(--accent);
  color: #fff;
  background: var(--accent);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-hero-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-hero-secondary {
  border: 1px solid var(--border);
  color: var(--text-2);
}

.btn-hero-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.demo-wrap {
  max-width: 720px;
  margin: 3.5rem auto 0;
}

.demo-caption,
.section-label {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-caption {
  margin-bottom: 1rem;
  color: var(--text-3);
}

.demo-pill {
  position: relative;
  overflow: hidden;
  padding: 1.5rem 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  text-align: left;
}

.demo-pill::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, var(--accent-dim), transparent);
  pointer-events: none;
}

.demo-lang {
  position: relative;
  margin-bottom: 0.35rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.demo-original,
.demo-translation {
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.demo-original {
  height: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-2);
  font-size: 1.2rem;
}

.demo-divider {
  position: relative;
  height: 1px;
  margin: 0.75rem 0;
  background: var(--border);
}

.demo-translation {
  height: 2rem;
  color: var(--text-1);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
}

.demo-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin-left: 2px;
  vertical-align: middle;
  background: var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.features,
.mode-cards,
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.features {
  margin: 4rem 0;
}

.feature,
.mode-card,
.stat-card,
.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.feature,
.mode-card {
  padding: 1.5rem;
}

.feature-icon {
  font-size: 1.45rem;
  margin-bottom: 0.75rem;
}

.feature-title,
.mode-card-title {
  color: var(--text-1);
  font-weight: 700;
  margin-bottom: 0.38rem;
}

.feature-desc,
.mode-card-desc,
.section-desc {
  color: var(--text-2);
  font-size: 0.84rem;
  line-height: 1.7;
}

.modes-section {
  margin: 2rem 0 4rem;
}

.section-title {
  margin: 0.4rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
}

.section-desc {
  max-width: 580px;
  margin-bottom: 2rem;
}

.mode-cards {
  grid-template-columns: repeat(2, 1fr);
}

.mode-badge {
  display: inline-flex;
  margin-bottom: 0.75rem;
  padding: 0.18rem 0.58rem;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.cta-section {
  position: relative;
  overflow: hidden;
  margin: 2rem 0;
  padding: 3rem 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 60% at 50% 100%, var(--accent-dim), transparent);
  pointer-events: none;
}

.cta-title,
.auth-title {
  font-family: var(--font-display);
  font-weight: 700;
}

.cta-title {
  position: relative;
  margin-bottom: 0.75rem;
  font-size: 2rem;
}

.cta-desc {
  position: relative;
  margin-bottom: 2rem;
  color: var(--text-2);
}

footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-3);
  font-size: 0.75rem;
}

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.25rem;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  padding: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.auth-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.25rem;
}

.auth-title {
  font-size: 1.75rem;
}

.auth-subtitle {
  margin-bottom: 2rem;
  color: var(--text-2);
  font-size: 0.88rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-2);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.form-input,
.form-textarea,
.select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-2);
  color: var(--text-1);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input,
.select {
  min-height: 42px;
  padding: 0.68rem 0.9rem;
}

.form-textarea {
  min-height: 86px;
  padding: 0.78rem 0.9rem;
  resize: vertical;
}

.form-input:focus,
.form-textarea:focus,
.select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-auth {
  width: 100%;
  min-height: 44px;
  margin-top: 0.5rem;
  border: none;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 800;
}

.btn-auth:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-auth:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-error {
  display: none;
  margin-top: 1rem;
  color: var(--error);
  font-size: 0.8rem;
}

.auth-link {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--text-2);
  font-size: 0.8rem;
}

.auth-link a {
  color: var(--accent);
  text-decoration: none;
}

.auth-link a:hover {
  text-decoration: underline;
}

.app-container {
  height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.875rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.topbar-brand {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  flex-shrink: 0;
}

.brand-tagline {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topbar-indicators {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}

.status-item,
.topbar-username,
.topbar-balance {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
}

.status-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-3);
  flex-shrink: 0;
}

.status-item.connected .status-dot {
  background: var(--success);
  box-shadow: 0 0 8px rgba(5, 150, 105, 0.3);
}

.status-item.live .status-dot {
  background: var(--live);
  animation: pulse 1.1s infinite;
}

.rec-badge {
  display: none;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.55rem;
  border: 1px solid rgba(220, 38, 38, 0.24);
  border-radius: 999px;
  background: rgba(220, 38, 38, 0.08);
  color: var(--live);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rec-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--live);
  animation: blink 1s step-end infinite;
}

.topbar-nav,
.user-panel {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.topbar-balance {
  padding: 0.15rem 0.42rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-3);
}

.topbar-balance.low-balance,
.low-balance {
  color: var(--error);
  border-color: rgba(220, 38, 38, 0.32);
}

.session-bar,
.typing-bar {
  display: flex;
  align-items: flex-end;
  gap: 0.6rem;
  flex-shrink: 0;
}

.session-bar {
  flex-wrap: wrap;
}

.input-row {
  flex: 1;
  min-width: 220px;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.input-row-compact {
  flex: 0 1 220px;
}

.input-label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-3);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.session-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.translation-feed {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 3rem 1.5rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.translation-feed:fullscreen {
  border: none;
  border-radius: 0;
  padding-top: 3.5rem;
}

.translation-feed[data-display-mode="translation_only"] .utterance-text[data-kind="original"] {
  display: none;
}

.translation-feed[data-display-mode="original_only"] .utterance-text[data-kind="translation"] {
  display: none;
}

.feed-controls {
  position: sticky;
  top: -2.3rem;
  z-index: 10;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.35rem;
  margin-top: -2.25rem;
  margin-bottom: 1rem;
  pointer-events: none;
}

.feed-display-toggle,
.feed-icon-btn {
  pointer-events: auto;
  backdrop-filter: blur(8px);
}

.feed-display-toggle {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .feed-display-toggle,
[data-theme="dark"] .feed-icon-btn {
  background: rgba(22, 22, 25, 0.92);
}

.feed-toggle-btn {
  border: none;
  background: transparent;
  color: var(--text-3);
  padding: 0.32rem 0.58rem;
  font-size: 0.7rem;
  font-weight: 800;
}

.feed-toggle-btn + .feed-toggle-btn {
  border-left: 1px solid var(--border);
}

.feed-toggle-btn[aria-pressed="true"] {
  background: var(--accent-dim);
  color: var(--accent);
}

.empty-state {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  color: var(--text-3);
  text-align: center;
}

.empty-icon {
  width: 52px;
  height: 52px;
  opacity: 0.7;
}

.empty-title {
  color: var(--text-2);
  font-family: var(--font-text);
  font-size: 1.35rem;
  font-weight: 600;
}

.empty-message {
  max-width: 360px;
  font-size: 0.84rem;
}

.utterance-block {
  display: flex;
  flex-direction: column;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  animation: slide-up 0.28s ease;
}

@keyframes slide-up {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.utterance-block:last-child {
  border-bottom: none;
}

.utterance-block.updating .text-content {
  animation: breathe 1.8s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

.utterance-timestamp {
  order: -2;
  margin-bottom: 0.55rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
}

.utterance-text[data-kind="translation"] {
  order: -1;
  margin-bottom: 0.35rem;
}

.text-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.text-content {
  color: var(--text-1);
  font-family: var(--font-text);
  line-height: 1.75;
  word-break: break-word;
}

.text-content.translation {
  color: var(--transl-color);
  font-size: 1.2rem;
}

.text-content.original {
  color: var(--orig-color);
  font-size: 0.95rem;
  opacity: 0.74;
}

.text-content:empty::before {
  content: '...';
  color: var(--text-3);
  letter-spacing: 0.25em;
}

.typing-panel {
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.dashboard-page {
  min-height: 100vh;
  padding: 1rem 1.25rem 2rem;
}

.dashboard-shell {
  max-width: 1200px;
  margin: 0 auto;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 1.25rem;
  border-bottom: 1px solid var(--border);
}

.dashboard-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
}

.dashboard-meta {
  color: var(--text-2);
  font-size: 0.85rem;
}

.profile-link {
  border: none;
  padding: 0;
  background: transparent;
  color: var(--accent);
  font-weight: 700;
}

.profile-link span[aria-hidden="true"] {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.dashboard-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.dashboard-stats {
  margin: 1.25rem 0;
}

.stat-card {
  padding: 1.25rem;
}

.stat-label {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat-value {
  margin-top: 0.4rem;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
}

.panel {
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-weight: 800;
}

.panel-body {
  padding: 1rem 1.25rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1rem;
  margin: 1.25rem 0;
}

.api-key-row,
.collection-toolbar,
.session-filters,
.input-inline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.api-key-row .form-input,
.collection-toolbar .select {
  min-width: 0;
}

.mono-input {
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.search-input {
  width: min(280px, 42vw);
}

.status-filter {
  width: 150px;
}

.table-wrap {
  overflow-x: auto;
}

.session-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 780px;
}

.session-table th,
.session-table td {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.session-table th {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.session-table td {
  color: var(--text-2);
  font-size: 0.84rem;
}

.session-table tr:last-child td {
  border-bottom: none;
}

.subject-cell {
  color: var(--text-1);
  font-weight: 700;
}

.download-links {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.download-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.link-button {
  border: none;
  padding: 0;
  background: transparent;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.link-button:disabled {
  color: var(--text-3);
  cursor: not-allowed;
}

.danger-link {
  color: var(--error);
}

.download-links a:hover,
.link-button:hover:not(:disabled) {
  text-decoration: underline;
}

.table-input {
  min-width: 150px;
  min-height: 34px;
  padding: 0.45rem 0.6rem;
  background: transparent;
}

.collection-list,
.collection-stack,
.collection-detail {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.collection-list {
  margin-top: 0.85rem;
}

.collection-card,
.collection-item {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-2);
}

.collection-card {
  display: grid;
  gap: 0.25rem;
}

.collection-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.collection-item-block {
  display: block;
}

.collection-item-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
}

.collection-name-link {
  width: fit-content;
  border: none;
  padding: 0;
  background: transparent;
  color: var(--text-1);
  font-weight: 800;
  text-align: left;
}

.collection-name-link:hover {
  color: var(--accent);
}

.collection-meta,
.collection-analysis,
.collection-empty {
  color: var(--text-3);
  font-size: 0.78rem;
}

.analysis-result {
  margin-top: 0.65rem;
  white-space: pre-wrap;
  overflow-x: auto;
  color: var(--text-2);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  line-height: 1.65;
}

.settings-form {
  display: grid;
  gap: 0.85rem;
}

.settings-form .form-group {
  margin-bottom: 0;
}

.admin-form {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 0.7fr 0.65fr auto;
  gap: 0.75rem;
  align-items: end;
  padding: 1rem 1.25rem;
}

.admin-form .form-group {
  margin-bottom: 0;
}

.admin-submit {
  min-width: 116px;
}

.admin-message {
  grid-column: 1 / -1;
  color: var(--success);
  font-size: 0.84rem;
  font-weight: 700;
}

.admin-message.error {
  color: var(--error);
}

.admin-table .form-input,
.admin-table .select {
  min-width: 120px;
  background: transparent;
}

.admin-table td {
  vertical-align: middle;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(8, 8, 12, 0.72);
  backdrop-filter: blur(10px);
}

.modal-overlay.open {
  display: flex;
}

.modal-dialog {
  width: min(760px, 100%);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.modal-dialog-sm {
  width: min(460px, 100%);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.modal-body {
  overflow-y: auto;
  padding: 1.25rem;
}

.summary-field {
  margin-bottom: 1.25rem;
}

.summary-label {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}

.summary-value {
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-md);
  background: var(--surface-2);
  color: var(--text-1);
  font-family: var(--font-text);
  line-height: 1.75;
  white-space: pre-wrap;
}

.pip-body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: rgba(245, 245, 247, 0.98);
}

.pip-pill {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px 18px 14px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.96);
  overflow: hidden;
}

.pip-translation {
  color: #065f46;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

.pip-original {
  margin-top: 4px;
  color: rgba(0, 0, 0, 0.5);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 12px;
  line-height: 1.4;
}

.pip-empty {
  color: rgba(0, 0, 0, 0.45);
  font-size: 13px;
}

@media (max-width: 768px) {
  .landing {
    padding-inline: 1rem;
  }

  .landing-nav,
  .dashboard-header,
  .topbar {
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 2rem;
  }

  .features,
  .mode-cards,
  .dashboard-stats {
    grid-template-columns: 1fr;
  }

  .app-container {
    height: auto;
    min-height: 100vh;
    padding: 0.6rem 0.75rem 0.75rem;
  }

  .brand-tagline,
  .status-hint,
  .topbar-username,
  .topbar-balance {
    display: none;
  }

  .session-bar,
  .typing-panel {
    flex-direction: column;
    display: flex;
    align-items: stretch;
  }

  .session-actions,
  .typing-panel .btn {
    width: 100%;
  }

  .session-actions .btn {
    flex: 1;
  }

  .translation-feed {
    min-height: 520px;
    padding: 2.75rem 1rem 1rem;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .api-key-row,
  .collection-toolbar,
  .session-filters {
    align-items: stretch;
    flex-direction: column;
  }

  .search-input,
  .status-filter {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 1.5rem;
  }

  .hero-title {
    font-size: 2.35rem;
  }

  .demo-pill {
    padding: 1.15rem;
  }

  .dashboard-page {
    padding-inline: 0.75rem;
  }
}

@media (max-width: 1100px) {
  .admin-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .admin-form {
    grid-template-columns: 1fr;
  }
}