@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Literata:ital,opsz,wght@0,7..72,400;0,7..72,600;0,7..72,700;1,7..72,700&family=JetBrains+Mono:wght@500&display=swap');

:root {
  /* Color Tokens */
  --surface: #f9faf6;
  --surface-dim: #dadad7;
  --surface-bright: #f9faf6;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f3f4f1;
  --surface-container: #eeeeeb;
  --surface-container-high: #e8e8e5;
  --surface-container-highest: #e2e3e0;
  
  --on-surface: #1a1c1a;
  --on-surface-variant: #414844;
  --inverse-surface: #2f312f;
  --inverse-on-surface: #f0f1ee;
  
  --outline: #717973;
  --outline-variant: #c1c8c2;
  
  --primary: #012d1d;
  --on-primary: #ffffff;
  --primary-container: #1b4332;
  --on-primary-container: #86af99;
  
  --secondary: #2c694e;
  --on-secondary: #ffffff;
  
  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #93000a;
  
  /* Legacy/Bridge Tokens */
  --bg-body: var(--surface);
  --bg-card: var(--surface-container-lowest);
  --text-dark: var(--on-surface);
  --text-muted: var(--on-surface-variant);
  --border-color: var(--outline-variant);
  --error-bg: var(--error-container);
  --error-text: var(--on-error-container);
  --success-bg: #d1fae5;
  --success-text: #065f46;
  --highlight-bg: #fef2f2;
  
  /* Typography Variables */
  --font-display: 'Literata', serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Layout & Spacing */
  --max-width: 1200px;
  --gutter: 24px;
  --section-padding: 120px;
  
  /* Shapes */
  --radius-card: 16px;
  --radius-btn: 10px;
}

/* Reset & Base */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6, .display-font {
  font-family: var(--font-display);
  color: var(--text-dark);
}

a {
  text-decoration: none;
  color: var(--primary);
  transition: color 0.15s ease;
}

/* Typography Classes */
.display-lg {
  font-family: var(--font-display);
  font-size: 72px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.headline-xl {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
}
.headline-lg {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
}
.body-lg {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.6;
}
.label-md {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Layout Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}

.section {
  padding: var(--section-padding) 0;
}

.dark-section {
  background-color: #0f1410;
  color: #f9faf6;
}
.dark-section h1, .dark-section h2, .dark-section h3, .dark-section p {
  color: #f9faf6;
}
.dark-section .text-muted {
  color: #a5a9a5;
}

.text-center { text-align: center; }
.hidden { display: none !important; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  line-height: 1.2;
}
.btn-primary {
  background-color: var(--primary);
  color: var(--on-primary);
}
.btn-primary:hover {
  background-color: var(--primary-container);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-ghost {
  background-color: transparent;
  color: var(--on-surface);
  border: 1px solid var(--outline-variant);
}
.btn-ghost:hover {
  background-color: var(--surface-container-low);
}
.btn-ghost:active {
  transform: scale(0.98);
}

/* Chips */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.chip-mint {
  background-color: var(--success-bg);
  color: var(--success-text);
}
.chip-blush {
  background-color: var(--highlight-bg);
  color: #991b1b;
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 32px;
  margin-bottom: 24px;
  /* Flat depth: no heavy shadow, relying on border and bg color */
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  background-color: rgba(249, 250, 246, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  padding: 16px 0;
}
.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 24px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: white;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.nav-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

/* Landing Page Specific overrides */
.hero {
  padding: 140px 0 80px;
}
.hero-content {
  grid-column: 1 / 13;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.hero-content h1 {
  margin-bottom: 24px;
}
.hero-content p {
  color: var(--text-muted);
  margin-bottom: 40px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  margin-bottom: 24px;
}

/* Grid Layouts for Landing */
.feature-grid {
  grid-column: 1 / 13;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
  margin-top: 64px;
}
.feature-card {
  text-align: left;
  padding: 40px 32px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
}
.feature-card h3 {
  margin-bottom: 12px;
}

.comparison-grid {
  grid-column: 1 / 13;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  margin-top: 48px;
}
.comp-card {
  padding: 40px;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
}
.comp-card.bad {
  background: var(--surface-container-low);
  border-top: 4px solid var(--error-text);
}
.comp-card.good {
  background: var(--surface-container-lowest);
  border-top: 4px solid var(--success-text);
  box-shadow: 0 4px 24px rgba(0,0,0,0.02); /* subtle tonal lift */
}
.comp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.comp-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
}
.highlight-bad {
  background-color: var(--error-bg);
  color: var(--error-text);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Pricing Grid */
.pricing-grid {
  grid-column: 3 / 11;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  margin-top: 48px;
}
.pricing-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
}
.pricing-card.pro {
  border: 2px solid var(--primary);
  position: relative;
}
.badge-absolute {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
}
.price-tag {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  margin: 16px 0 32px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.price-tag span {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  color: var(--text-muted);
}
.feature-list {
  list-style: none;
  margin-bottom: 40px;
  flex-grow: 1;
}
.feature-list li {
  margin-bottom: 16px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 16px;
}
.feature-icon {
  color: var(--primary);
  font-weight: 700;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 64px 0;
  margin-top: 80px;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-links {
  display: flex;
  gap: 32px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
}
.footer-links a:hover {
  color: var(--primary);
}

/* Forms & Auth (Preserved for compatibility) */
.auth-wrapper {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.auth-card {
  background: var(--bg-card);
  width: 100%;
  max-width: 440px;
  padding: 48px;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
}
.auth-card h2 {
  font-size: 28px;
  margin-bottom: 8px;
  text-align: center;
}
.auth-card p.subtitle {
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 32px;
  font-size: 15px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-dark);
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-dark);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}
.auth-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}
.auth-footer a {
  font-weight: 600;
}
.error-msg {
  color: var(--error-text);
  background: var(--error-bg);
  font-size: 14px;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
}
.success-msg {
  color: var(--success-text);
  background: var(--success-bg);
  font-size: 14px;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
}

/* Dashboard Compatibility */
.dashboard-wrapper {
  padding: 80px 0;
  max-width: 800px;
  margin: 0 auto;
}
.user-profile {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 40px;
}
.avatar {
  width: 80px;
  height: 80px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 600;
}
.user-info h2 {
  font-size: 24px;
  margin-bottom: 4px;
}
.user-info p {
  color: var(--text-muted);
  font-size: 16px;
}
.badge-free {
  background: var(--surface-container-high);
  color: var(--text-dark);
}
.badge-pro {
  background: var(--success-bg);
  color: var(--success-text);
}
.progress-container {
  background: var(--border-color);
  height: 8px;
  border-radius: 4px;
  margin: 16px 0;
  overflow: hidden;
}
.progress-bar {
  background: var(--primary);
  height: 100%;
  border-radius: 4px;
}

/* Responsive */
@media (max-width: 1024px) {
  .display-lg { font-size: 56px; }
  .headline-xl { font-size: 40px; }
  .section { padding: 80px 0; }
  .pricing-grid { grid-column: 1 / 13; }
}
@media (max-width: 768px) {
  .display-lg { font-size: 40px; }
  .headline-xl { font-size: 32px; }
  .section { padding: 48px 0; }
  .feature-grid, .comparison-grid, .pricing-grid {
    grid-template-columns: 1fr;
  }
  .hero-btns {
    flex-direction: column;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .footer-content {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }
}

/* ============================================= */
/* V2: Personas Dashboard Styles                 */
/* ============================================= */

/* Page Header with action button */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
}

/* Persona Cards Grid */
.personas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.persona-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-card);
  padding: 24px;
  position: relative;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.persona-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 24px rgba(0,0,0,0.04);
}
.persona-card.is-default {
  border-color: var(--primary);
  border-width: 2px;
}

.persona-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}
.persona-name-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.persona-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--on-surface);
}
.persona-default-star {
  color: var(--primary);
  font-size: 18px;
}
.persona-actions {
  display: flex;
  gap: 4px;
}
.persona-action-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  color: var(--on-surface-variant);
  font-size: 18px;
  transition: background-color 0.15s ease, color 0.15s ease;
  display: flex;
  align-items: center;
}
.persona-action-btn:hover {
  background-color: var(--surface-container-low);
  color: var(--primary);
}

/* Tone Badge */
.tone-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}
.tone-badge.casual { background: #fef3c7; color: #92400e; }
.tone-badge.professional { background: var(--success-bg); color: var(--success-text); }
.tone-badge.formal { background: #e0e7ff; color: #3730a3; }

/* Fingerprint Status */
.fingerprint-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--on-surface-variant);
  margin-bottom: 16px;
}
.fingerprint-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.fingerprint-dot.trained { background-color: var(--success-text); }
.fingerprint-dot.untrained { background-color: var(--outline); }

/* Analytics Row */
.persona-stats {
  display: flex;
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--outline-variant);
}
.persona-stat {
  display: flex;
  flex-direction: column;
}
.persona-stat-value {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--on-surface);
  line-height: 1;
}
.persona-stat-label {
  font-size: 11px;
  color: var(--on-surface-variant);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
}

/* Acceptance Rate Bar */
.acceptance-bar-bg {
  width: 60px;
  height: 6px;
  background: var(--surface-container-high);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}
.acceptance-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}
.acceptance-bar-fill.high { background-color: var(--success-text); }
.acceptance-bar-fill.medium { background-color: #d97706; }
.acceptance-bar-fill.low { background-color: var(--error); }

/* Empty State */
.empty-state {
  text-align: center;
  padding: 80px 40px;
  background: var(--surface-container-lowest);
  border: 2px dashed var(--outline-variant);
  border-radius: var(--radius-card);
}
.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.4;
}
.empty-state h3 {
  font-size: 20px;
  margin-bottom: 8px;
}
.empty-state p {
  color: var(--on-surface-variant);
  font-size: 14px;
  margin-bottom: 24px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-card);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  transform: translateY(12px);
  transition: transform 0.2s ease;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}
.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.modal-header h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
}
.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 24px;
  color: var(--on-surface-variant);
  padding: 4px;
  border-radius: 8px;
  transition: background-color 0.15s ease;
}
.modal-close:hover {
  background-color: var(--surface-container-low);
}

.modal-body .form-group {
  margin-bottom: 20px;
}
.modal-body .form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--on-surface);
}
.modal-body .form-group .form-hint {
  font-size: 12px;
  color: var(--on-surface-variant);
  margin-top: 4px;
}

/* Tone Selector Chips */
.tone-selector {
  display: flex;
  gap: 8px;
}
.tone-chip {
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  cursor: pointer;
  transition: all 0.15s ease;
}
.tone-chip:hover {
  border-color: var(--primary);
}
.tone-chip.active {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

/* Writing Samples */
.samples-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sample-textarea {
  width: 100%;
  min-height: 100px;
  padding: 12px;
  border: 1px solid var(--outline-variant);
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--on-surface);
  resize: vertical;
  transition: border-color 0.15s, box-shadow 0.15s;
  line-height: 1.5;
}
.sample-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}
.sample-textarea::placeholder {
  color: var(--outline);
}
.sample-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sample-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  letter-spacing: 0.04em;
}
.btn-remove-sample {
  background: none;
  border: none;
  color: var(--on-surface-variant);
  cursor: pointer;
  font-size: 18px;
  padding: 2px;
  border-radius: 4px;
}
.btn-remove-sample:hover {
  color: var(--error);
}
.btn-add-sample {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px dashed var(--outline-variant);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: all 0.15s ease;
  width: 100%;
  justify-content: center;
}
.btn-add-sample:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Fingerprint Preview */
.fingerprint-preview {
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: 10px;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--on-surface-variant);
  line-height: 1.6;
  white-space: pre-wrap;
  max-height: 200px;
  overflow-y: auto;
}

/* Training Progress */
.training-status {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
}
.training-status.in-progress {
  background: #fef3c7;
  color: #92400e;
}
.training-status.complete {
  background: var(--success-bg);
  color: var(--success-text);
}
.training-spinner {
  width: 18px;
  height: 18px;
  border: 3px solid rgba(0,0,0,0.1);
  border-top-color: #92400e;
  border-radius: 50%;
  animation: spin-v2 0.7s linear infinite;
}
@keyframes spin-v2 {
  to { transform: rotate(360deg); }
}

/* Modal Footer */
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--outline-variant);
}

/* Delete Confirmation */
.delete-confirm {
  background: var(--error-container);
  border: 1px solid #fca5a5;
  border-radius: 10px;
  padding: 16px;
  margin-top: 12px;
}
.delete-confirm p {
  font-size: 13px;
  color: var(--on-error-container);
  margin-bottom: 12px;
}
.delete-confirm-actions {
  display: flex;
  gap: 8px;
}

/* Nav tab bar for dashboard pages */
.dashboard-nav {
  display: inline-flex;
  gap: 4px;
  background: var(--surface-container-low);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 32px;
}
.dashboard-nav a {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: all 0.15s ease;
}
.dashboard-nav a:hover {
  background: var(--surface-container-high);
  color: var(--on-surface);
}
.dashboard-nav a.active {
  background: var(--surface-container-lowest);
  color: var(--primary);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* Responsive for personas */
@media (max-width: 768px) {
  .personas-grid {
    grid-template-columns: 1fr;
  }
  .modal {
    margin: 16px;
    max-height: calc(100vh - 32px);
  }
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}