:root {
  --bg: #f1f3f5;
  --bg-soft: #eef1f4;
  --card: #ffffff;
  --card-soft: #fbfcfd;
  --ink: #0e1116;
  --ink-mid: #465161;
  --ink-soft: #7a8595;
  --line: #e6e9ed;
  --line-soft: #eef1f4;
  --green: #22c55e;
  --green-ink: #15803d;
  --green-soft: #e9f8ee;
  --amber: #f59e0b;
  --amber-ink: #b45309;
  --amber-soft: #fef4dd;
  --blue: #1cb0f6;
  --red: #ef4444;
  --shadow-card: 0 12px 28px rgba(15, 23, 42, 0.08);
  --shadow-lift: 0 18px 42px rgba(15, 23, 42, 0.12);
  --radius-xl: 22px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --content: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.08), transparent 22%),
    linear-gradient(180deg, #f6f8f9 0%, var(--bg) 45%, #edf0f3 100%);
}

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

a {
  color: inherit;
  text-decoration: none;
}

.app-shell {
  width: min(var(--content), calc(100% - 28px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(241, 243, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  width: min(var(--content), calc(100% - 28px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
}

.brand,
.auth-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-copy strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 800;
}

.brand-copy span {
  display: block;
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  padding: 6px;
  object-fit: contain;
}

.brand-logo.large {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  padding: 8px;
}

.topbar-actions,
.inline-actions,
.tab-row,
.session-actions,
.auth-toggle-row,
.segment-row,
.scenario-meta,
.preview-header,
.message-row,
.profile-row,
.voice-panel-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.button,
.button-ghost,
.tab-button,
.segment-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease, opacity 0.15s ease;
}

.button:hover,
.button-ghost:hover,
.tab-button:hover,
.segment-button:hover {
  transform: translateY(-1px);
}

.button,
.button-ghost {
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  font-size: 0.94rem;
  font-weight: 800;
}

.button {
  background: var(--green);
  color: white;
  box-shadow: inset 0 -4px 0 var(--green-ink);
}

.button.accent {
  background: var(--green);
  box-shadow: inset 0 -4px 0 var(--green-ink);
}

.button-ghost {
  background: var(--card);
  color: var(--ink-mid);
  border: 1px solid var(--line);
}

.button:disabled,
.button-ghost:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.app-main {
  padding: 22px 0 88px;
}

.hero-card,
.auth-card,
.panel,
.metric-card,
.scenario-card,
.session-card,
.message-compose,
.empty-card,
.report-card,
.profile-card,
.timeline-card,
.recent-item,
.preview-card,
.preview-metric,
.report-score,
.voice-transcript {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.hero-card {
  padding: 22px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 18px;
  margin-bottom: 20px;
}

.eyebrow,
.section-kicker,
.message-label,
.goal-line strong {
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.76rem;
  font-weight: 800;
}

.eyebrow {
  border-radius: 999px;
  padding: 8px 12px;
  background: var(--green-soft);
  color: var(--green-ink);
}

.hero-card h1,
.auth-card h1,
.panel h2,
.session-card h2,
.session-top-card h2,
.report-card h2 {
  margin: 14px 0 0;
  line-height: 1.04;
  letter-spacing: -0.04em;
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  font-weight: 900;
}

.hero-card p,
.auth-card p,
.panel-subtitle,
.muted {
  color: var(--ink-soft);
}

.hero-card p,
.auth-card p,
.panel-subtitle {
  margin: 14px 0 0;
  line-height: 1.65;
}

.hero-preview {
  display: grid;
  gap: 14px;
}

.preview-card,
.preview-metric,
.metric-card,
.scenario-card,
.profile-card,
.timeline-card,
.report-score {
  padding: 18px;
}

.preview-card {
  background: var(--card-soft);
}

.preview-bubble,
.message-bubble {
  padding: 13px 15px;
  border-radius: 16px;
  line-height: 1.58;
  font-size: 0.95rem;
}

.preview-bubble.ai,
.message-bubble.ai {
  background: var(--card);
  border: 1px solid var(--line-soft);
  color: var(--ink);
  border-top-left-radius: 8px;
}

.preview-bubble.user,
.message-bubble.user {
  background: var(--green);
  color: white;
  margin-left: auto;
  width: fit-content;
  max-width: 92%;
  border-top-right-radius: 8px;
}

.preview-metric-grid,
.metrics-grid,
.scenario-grid,
.stats-grid,
.report-score-grid {
  display: grid;
  gap: 14px;
}

.preview-metric-grid,
.metrics-grid,
.stats-grid,
.report-score-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-card strong,
.preview-metric strong,
.report-score strong {
  display: block;
  font-size: 1.7rem;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.preview-metric span,
.metric-card span,
.report-score span {
  display: block;
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.auth-layout {
  min-height: calc(100vh - 82px);
  display: grid;
  place-items: center;
  padding: 26px 0 64px;
}

.auth-card {
  width: min(540px, 100%);
  padding: 24px;
}

.auth-form,
.custom-form,
.compose-form {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.field-group {
  display: grid;
  gap: 7px;
}

.field-group label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink-mid);
}

.field-group input,
.field-group textarea,
.field-group select {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #f9fafb;
  padding: 14px 15px;
  color: var(--ink);
  outline: none;
}

.field-group textarea {
  min-height: 110px;
  resize: vertical;
}

.field-group input:focus,
.field-group textarea:focus,
.field-group select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.14);
}

.error-banner,
.info-banner {
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 0.92rem;
  margin-bottom: 16px;
}

.error-banner {
  background: rgba(239, 68, 68, 0.1);
  color: #b91c1c;
  border: 1px solid rgba(239, 68, 68, 0.16);
}

.info-banner {
  background: var(--green-soft);
  color: var(--green-ink);
  border: 1px solid rgba(34, 197, 94, 0.18);
}

.tab-row {
  margin-bottom: 18px;
}

.tab-button,
.segment-button {
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-mid);
  border: 1px solid var(--line);
  font-size: 0.9rem;
  font-weight: 800;
}

.tab-button.active,
.segment-button.active {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}

.panel,
.session-card,
.session-top-card,
.message-compose,
.report-card {
  padding: 22px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: 18px;
}

.section-kicker {
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.scenario-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.scenario-card {
  display: grid;
  gap: 14px;
}

.scenario-card.custom {
  background: linear-gradient(180deg, #ffffff 0%, var(--green-soft) 100%);
}

.scenario-card h3,
.timeline-card h3,
.profile-card h3,
.report-card h3,
.empty-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
}

.tag,
.difficulty,
.score-pill,
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.76rem;
  font-weight: 800;
}

.tag {
  background: var(--green-soft);
  color: var(--green-ink);
}

.difficulty {
  background: var(--bg-soft);
  color: var(--ink-soft);
}

.status-pill {
  background: var(--green-soft);
  color: var(--green-ink);
}

.status-pill-muted {
  background: var(--amber-soft);
  color: var(--amber-ink);
}

.score-pill {
  background: var(--amber-soft);
  color: var(--amber-ink);
}

.session-layout {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 18px;
  margin-bottom: 18px;
}

.session-sidebar,
.session-main,
.recent-list,
.stats-list,
.profile-list {
  display: grid;
  gap: 14px;
}

.session-stage {
  display: grid;
  gap: 18px;
  margin-bottom: 18px;
}

.session-top-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  padding: 20px;
}

.session-top-row,
.conversation-header,
.voice-dock-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.goal-strip {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff 0%, #f6faf7 100%);
  border: 1px solid var(--line-soft);
}

.goal-strip-label {
  display: inline-block;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.73rem;
  font-weight: 800;
  color: var(--green-ink);
}

.goal-strip-text {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
}

.conversation-card {
  padding-bottom: 14px;
}

.goal-line,
.report-summary,
.voice-panel {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  background: #f9fafb;
  border: 1px solid var(--line-soft);
}

.goal-line strong {
  display: block;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.message-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  max-height: 48vh;
  overflow: auto;
  padding-right: 4px;
}

.message-card {
  display: grid;
  gap: 6px;
}

.message-card.user {
  justify-items: end;
}

.message-label {
  color: var(--ink-soft);
}

.voice-panel-row {
  justify-content: space-between;
}

.voice-panel p {
  margin: 10px 0 0;
  line-height: 1.6;
}

.voice-dock {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  padding: 20px;
  display: grid;
  gap: 16px;
}

.voice-dock.active {
  border-color: rgba(34, 197, 94, 0.45);
  box-shadow: 0 18px 40px rgba(34, 197, 94, 0.12);
}

.mode-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mode-chip {
  border: 1px solid var(--line);
  background: #f8faf9;
  border-radius: 18px;
  padding: 14px;
  text-align: left;
  cursor: pointer;
  display: grid;
  gap: 5px;
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.mode-chip:hover {
  transform: translateY(-1px);
}

.mode-chip:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.mode-chip.active {
  background: var(--green-soft);
  border-color: rgba(34, 197, 94, 0.35);
}

.mode-chip-title {
  display: block;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--ink);
}

.mode-chip-desc {
  display: block;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.45;
}

.mic-cta {
  width: 100%;
  border: 0;
  border-radius: 28px;
  background: var(--green);
  color: white;
  padding: 20px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: inset 0 -5px 0 var(--green-ink), var(--shadow-lift);
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease, opacity 0.15s ease;
}

.mic-cta:hover {
  transform: translateY(-1px);
}

.mic-cta:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.mic-cta.recording {
  background: #ea2b2b;
  box-shadow: inset 0 -5px 0 #c02020, var(--shadow-lift);
}

.mic-cta-icon {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.2);
  font-size: 1.45rem;
  font-weight: 900;
}

.mic-cta-copy {
  display: grid;
  gap: 4px;
  text-align: left;
}

.mic-cta-copy strong {
  font-size: 1.08rem;
  font-weight: 900;
}

.mic-cta-copy span {
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.45;
  font-size: 0.92rem;
}

.voice-dock-actions,
.sidebar-stack {
  display: grid;
  gap: 10px;
}

.voice-helper {
  padding: 12px 14px;
  border-radius: 16px;
  background: #f9fafb;
  color: var(--ink-soft);
  border: 1px dashed var(--line);
  font-size: 0.92rem;
}

.voice-transcript {
  padding: 14px 16px;
  background: var(--card);
  color: var(--ink-mid);
  border: 1px solid rgba(34, 197, 94, 0.18);
  line-height: 1.6;
}

.inline-compose {
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.sidebar-card h3 {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 800;
}

.sidebar-stat {
  padding: 12px 14px;
  border-radius: 16px;
  background: #f9fafb;
  border: 1px solid var(--line-soft);
}

.sidebar-stat span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 800;
  margin-bottom: 4px;
}

.sidebar-stat strong {
  color: var(--ink);
  font-size: 0.98rem;
}

.recent-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
}

.stars {
  color: var(--amber);
  font-size: 1.15rem;
  letter-spacing: 0.18em;
}

.empty-card {
  padding: 18px;
}

.loading-shell {
  min-height: 52vh;
  display: grid;
  place-items: center;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(20, 33, 48, 0.1);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.tiny-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.footer-note {
  margin-top: 22px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1040px) {
  .hero-card,
  .session-layout,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .session-top-row,
  .conversation-header,
  .voice-dock-header {
    display: grid;
  }
}

@media (max-width: 720px) {
  .topbar-inner,
  .panel-header {
    display: grid;
    align-items: start;
  }

  .preview-metric-grid,
  .metrics-grid,
  .stats-grid,
  .report-score-grid {
    grid-template-columns: 1fr;
  }

  .app-shell,
  .topbar-inner {
    width: min(var(--content), calc(100% - 20px));
  }

  .hero-card,
  .auth-card,
  .panel,
  .session-top-card,
  .session-card,
  .message-compose,
  .report-card,
  .voice-dock {
    padding: 18px;
  }

  .button,
  .button-ghost {
    width: 100%;
  }

  .mode-switch,
  .preview-metric-grid,
  .metrics-grid,
  .stats-grid,
  .report-score-grid {
    grid-template-columns: 1fr;
  }

  .mic-cta {
    padding: 18px;
    border-radius: 22px;
  }

  .mic-cta-icon {
    width: 48px;
    height: 48px;
    font-size: 1.2rem;
  }
}