:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;
  --accent: #f6851b;
  --accent-hover: #e2761b;
  --accent-glow: rgba(246, 133, 27, 0.3);
  --text-primary: #eaeaea;
  --text-secondary: #8a8a9a;
  --text-muted: #5a5a6a;
  --success: #27ae60;
  --error: #e74c3c;
  --border: #2a2a3e;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-metamask {
  background: var(--accent);
  color: #fff;
  padding: 16px 40px;
  font-size: 1.15rem;
  border-radius: var(--radius);
}

.btn-metamask:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-group {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

/* Landing Page */
#landing-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 40px 20px;
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), #ff9a56);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 40px;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  max-width: 700px;
  margin-bottom: 40px;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.feature-card .feature-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.feature-card h3 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.feature-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Status / Error messages */
.status {
  margin-top: 20px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.status.connecting,
.status.signing,
.status.verifying,
.status.loading {
  background: var(--bg-tertiary);
  color: var(--accent);
  border: 1px solid var(--accent);
}

#error-message {
  display: none;
  margin-top: 16px;
  padding: 12px 20px;
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid var(--error);
  border-radius: var(--radius-sm);
  color: var(--error);
  font-size: 0.9rem;
  max-width: 500px;
}

/* Dashboard Layout */
#dashboard-page {
  display: none;
  min-height: 100vh;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.dashboard-header h1 {
  font-size: 1.3rem;
  background: linear-gradient(135deg, var(--accent), #ff9a56);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.wallet-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.wallet-badge::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
}

.dashboard-content {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: calc(100vh - 60px);
}

/* Sidebar */
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar .nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  font-size: 0.95rem;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.sidebar .nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.sidebar .nav-item.active {
  background: var(--bg-tertiary);
  color: var(--accent);
  border-left: 3px solid var(--accent);
}

/* Main content area */
.main-content {
  padding: 32px;
  overflow-y: auto;
}

.section {
  display: none;
}

.section.active {
  display: block;
}

.section h2 {
  font-size: 1.5rem;
  margin-bottom: 24px;
}

/* Cards */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--text-primary);
}

/* Profile */
.profile-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.profile-field label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.profile-field code {
  background: var(--bg-tertiary);
  padding: 6px 10px;
  border-radius: 6px;
  word-break: break-all;
}

.profile-field input,
.profile-field textarea {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
}

.profile-field input:focus,
.profile-field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* DID section */
.did-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.did-string label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.did-string code {
  background: var(--bg-tertiary);
  padding: 8px 12px;
  border-radius: 6px;
  display: block;
  word-break: break-all;
}

.did-doc-toggle {
  margin-top: 4px;
}

#did-doc-json {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--text-secondary);
  max-height: 400px;
  overflow-y: auto;
}

/* Credentials */
.credential-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
}

.credential-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.credential-type {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent);
  color: #fff;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.credential-date {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.credential-body {
  margin-bottom: 12px;
}

.credential-field {
  margin-bottom: 6px;
}

.credential-field label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.credential-field code {
  font-size: 0.8rem;
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
}

.truncate {
  display: inline-block;
  max-width: 350px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
}

.credential-actions {
  display: flex;
  gap: 8px;
}

/* VC Request Form */
.vc-form {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 20px;
}

.vc-form h3 {
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.form-group select,
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
}

.form-group select:focus,
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

/* Verification result */
#verification-result {
  display: none;
  margin-top: 16px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.verification-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  margin-bottom: 12px;
}

.verification-badge.valid {
  background: rgba(39, 174, 96, 0.15);
  border: 1px solid var(--success);
  color: var(--success);
}

.verification-badge.invalid {
  background: rgba(231, 76, 60, 0.15);
  border: 1px solid var(--error);
  color: var(--error);
}

.verification-details p {
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.verification-details code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  word-break: break-all;
}

.vc-jwt-display textarea {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  resize: vertical;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.empty-state p {
  margin-bottom: 8px;
}

.error-text {
  color: var(--error);
  font-size: 0.9rem;
}

/* Help button (?) in header */
.btn-help {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-help:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Help link on landing page */
.help-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Mobile MetaMask banner */
#mobile-metamask-banner {
  margin-top: 20px;
  max-width: 440px;
}

.mobile-banner-content {
  background: rgba(246, 133, 27, 0.08);
  border: 1px solid rgba(246, 133, 27, 0.3);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.mobile-banner-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 14px;
  line-height: 1.5;
}

.mobile-banner-content strong {
  color: var(--accent);
}

.mobile-banner-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 12px;
}

.mobile-banner-content a.btn {
  text-decoration: none;
}

.mobile-banner-hint {
  font-size: 0.8rem !important;
  color: var(--text-muted) !important;
  margin-bottom: 0 !important;
}

.mobile-banner-hint code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }

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

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
  }

  .sidebar nav {
    flex-direction: row;
    overflow-x: auto;
  }

  .sidebar .nav-item {
    white-space: nowrap;
  }

  .main-content {
    padding: 20px;
  }

  .hero-features {
    grid-template-columns: 1fr;
  }
}