/* CSP hardening helpers for styles migrated out of inline attributes. */
.csp-error-accent-missing {
    --error-accent: #233b9e;
    --error-accent-soft: rgba(35, 59, 158, 0.12);
}

.csp-error-accent-server {
    --error-accent: #bd4747;
    --error-accent-soft: rgba(189, 71, 71, 0.12);
}

.csp-hidden {
    display: none;
}

.csp-text-left {
    text-align: left;
}

.csp-auth-username {
    font-weight: 600;
    color: #1e293b;
}

.csp-auth-muted {
    color: #64748b;
}

.csp-auth-manager-label {
    font-size: 0.85rem;
    color: #64748b;
}

.csp-auth-action-row {
    margin-top: 1rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.csp-auth-upgrade-button {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border: 0;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    font-weight: 600;
}

.csp-auth-secondary-button {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    color: #374151;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
}

.csp-auth-help-note {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: #64748b;
}

.csp-auth-link {
    color: #059669;
    text-decoration: none;
}

.csp-auth-card-title {
    font-weight: 600;
}

.csp-auth-card-subtitle {
    font-size: 0.8rem;
    color: #64748b;
}

.csp-auth-section-spacer {
    margin-top: 1rem;
}

.csp-form-link-row {
    margin-bottom: 16px;
}

.csp-profile-row {
    display: flex;
    gap: 12px;
    align-items: center;
}

.csp-spin {
    animation: spin 1s linear infinite;
}

.csp-spin-inline {
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

.csp-profile-muted-copy {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 16px;
}

.csp-profile-danger-section {
    border-top: 1px solid #f1f5f9;
    padding-top: 24px;
}

.csp-danger-text {
    color: #dc2626;
}

.csp-danger-button {
    background: #dc2626;
    color: #fff;
}

.csp-small-help {
    margin-top: 8px;
    font-size: 12px;
}

.csp-dropdown-note {
    padding: 12px 16px;
    font-size: 12px;
    color: var(--theme-text-muted);
}

.csp-brand-accent {
    color: var(--ff-primary);
}

.csp-no-shrink {
    flex-shrink: 0;
}

.csp-welcome-title {
    color: var(--theme-text-primary);
    margin-bottom: 4px;
}

.csp-welcome-copy {
    color: var(--theme-text-muted);
    margin-bottom: 14px;
}

.csp-welcome-label {
    color: var(--theme-text-secondary);
    font-weight: 600;
    margin-top: 16px;
    margin-bottom: 8px;
}

.csp-welcome-footer {
    color: var(--theme-text-muted);
    margin-top: 12px;
}

.csp-chat-disclaimer {
    color: var(--gpt-text-tertiary, var(--theme-text-muted));
    font-family: var(--gpt-font-sans);
    font-size: 0.7rem;
    letter-spacing: 0;
    text-transform: none;
    line-height: 1.5;
    margin-top: 0.75rem;
}

.csp-chat-disclaimer-link {
    color: var(--gpt-accent, var(--ff-primary));
}

.csp-link-left-gap {
    margin-left: 6px;
}

.csp-modal-icon {
    font-weight: 700;
}

.csp-legal-link {
    color: var(--ff-primary);
    text-decoration: none;
}

.csp-empty-icon {
    font-size: 28px;
    color: var(--theme-text-muted);
}

.csp-error-icon {
    font-weight: 700;
}

.csp-seasonal-category {
    color: var(--theme-text-primary);
    font-size: 0.9rem;
}

.csp-seasonal-prompt {
    color: var(--theme-text-muted);
    font-size: 0.8rem;
    line-height: 1.4;
}

.csp-projections-error-main {
    color: var(--text-secondary);
}

.csp-projections-error-note {
    font-size: 13px;
    margin-top: 6px;
}

.csp-premium-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 10px;
    padding: 16px;
    color: #ef4444;
}

.csp-premium-upgrade-link {
    color: #3b82f6;
}

.csp-premium-preview {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.22);
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 12px;
    color: var(--theme-text-secondary, #475569);
    font-size: 14px;
}

.success-feedback.is-error {
    background: #b91c1c;
    color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    max-width: min(420px, calc(100vw - 32px));
}

.success-feedback.is-info {
    background: #1d4ed8;
    color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    max-width: min(420px, calc(100vw - 32px));
}

.model-route-panel {
    padding: 10px 16px;
    border-bottom: 1px solid var(--theme-border);
}

.model-route-title-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.model-route-tier {
    font-size: 13px;
    font-weight: 700;
    color: var(--theme-text-primary);
}

.model-route-badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--model-route-soft, rgba(0, 87, 255, 0.13));
    color: var(--model-route-color, var(--ff-primary));
    font-weight: 600;
    text-transform: uppercase;
}

.model-route-description {
    font-size: 11px;
    color: var(--theme-text-muted);
}

.model-route-list {
    padding: 8px 0;
}

.model-route-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.model-route-complexity {
    font-size: 10px;
    padding: 3px 6px;
    border-radius: 999px;
    background: var(--model-route-faint, rgba(0, 87, 255, 0.09));
    color: var(--model-route-color, var(--ff-primary));
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    min-width: 60px;
    text-align: center;
}

.model-route-copy {
    flex: 1;
}

.model-route-note {
    font-size: 12px;
    color: var(--theme-text-muted);
    line-height: 1.45;
}

.model-route-footer {
    padding: 10px 16px;
    border-top: 1px solid var(--theme-border);
    font-size: 11px;
    color: var(--theme-text-muted);
}

.model-route-strong {
    color: var(--theme-text-primary);
    font-weight: 700;
}

.model-route-budget-note {
    margin-top: 6px;
}

.model-route-upgrade {
    padding: 10px 16px;
    border-top: 1px solid var(--theme-border);
    text-align: center;
}

.model-route-upgrade-link {
    display: inline-block;
    padding: 6px 16px;
    background: var(--ff-primary);
    color: #fff;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.2s;
}

.model-route-upgrade-link:hover {
    opacity: 0.85;
}

.model-route-theme-free {
    --model-route-color: #6b7280;
    --model-route-soft: rgba(107, 114, 128, 0.13);
    --model-route-faint: rgba(107, 114, 128, 0.09);
}

.model-route-theme-pro {
    --model-route-color: #10b981;
    --model-route-soft: rgba(16, 185, 129, 0.13);
    --model-route-faint: rgba(16, 185, 129, 0.09);
}

.model-route-theme-premium {
    --model-route-color: #9333ea;
    --model-route-soft: rgba(147, 51, 234, 0.13);
    --model-route-faint: rgba(147, 51, 234, 0.09);
}

@keyframes ripple {
    to {
        transform: scale(2);
        opacity: 0;
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.auth-icon-rotating {
    transform: rotate(180deg) scale(0.8);
}

.auth-theme-ripple {
    position: absolute;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.3;
    pointer-events: none;
    transform: scale(0);
    animation: ripple 0.6s ease-out;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    margin-left: -50px;
    margin-top: -50px;
}

.auth-form.is-loading {
    opacity: 0.7;
}

.form-input.valid {
    border-color: var(--success) !important;
}

.form-input.invalid {
    border-color: var(--error) !important;
}

.form-hint.success {
    color: var(--success) !important;
}

.form-hint.error {
    color: var(--error) !important;
}

.form-hint.default {
    color: var(--text-muted) !important;
}

.auth-nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.auth-nav-btn:hover::before {
    left: 100%;
}

.auth-btn.loading {
    pointer-events: none;
}

.auth-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Externalized gpt-header.js styles. */
.gpt-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 1.5rem;
  background: rgba(241, 245, 251, 0.82);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
[data-theme="dark"] .gpt-header {
  background: rgba(8, 17, 31, 0.82);
  border-bottom-color: rgba(148, 168, 198, 0.16);
}
.gpt-header-inner {
  max-width: 1560px;
  margin: 0 auto;
  min-height: 4.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.gpt-header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  text-decoration: none;
  color: var(--gpt-text, #0f172a);
}
.gpt-header-logo-mark {
  width: clamp(5.75rem, 9.5vw, 7.5rem);
  height: auto;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
}
.gpt-header-title {
  font-weight: 900;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0;
  color: var(--gpt-text, #0f172a);
  line-height: 1.1;
}
.gpt-header-subtitle {
  font-family: var(--font-body, "Inter", -apple-system, BlinkMacSystemFont, sans-serif);
  font-size: 0.64rem;
  font-weight: 500;
  color: var(--gpt-text-tertiary, #7d8ca8);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 1px;
}
.gpt-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.gpt-mobile-controls {
  display: none;
  align-items: center;
  gap: 0.55rem;
}
.gpt-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  min-height: 2.5rem;
  border: 1px solid rgba(7, 16, 31, 0.08);
  border-radius: 999px;
  color: var(--ffn-ed-text-muted, #42516c);
  text-decoration: none;
  font-family: var(--font-body, "Inter", -apple-system, BlinkMacSystemFont, sans-serif);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
[data-theme="dark"] .gpt-nav-link {
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--gpt-text-tertiary, #7d8ca8);
}
.gpt-nav-link:hover {
  transform: translateY(-2px);
  background: #f8fafc;
  border-color: rgba(0, 87, 255, 0.22);
  color: var(--ffn-ed-text, #07101f);
}
[data-theme="dark"] .gpt-nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(0, 87, 255, 0.3);
  color: #f0f6fc;
}
.gpt-nav-link.active {
  background: var(--ffn-ed-accent, #0057ff);
  border-color: var(--ffn-ed-accent, #0057ff);
  color: white;
  box-shadow: 0 18px 48px rgba(0, 87, 255, 0.22);
}
.gpt-auth-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.5rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(7, 16, 31, 0.08);
  font-family: var(--font-body, "Inter", -apple-system, BlinkMacSystemFont, sans-serif);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}
.gpt-auth-button svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}
.gpt-auth-button:hover {
  transform: translateY(-2px);
}
.gpt-auth-button.login-button {
  background: rgba(255, 255, 255, 0.92);
  color: var(--ffn-ed-text-muted, #42516c);
}
.gpt-auth-button.login-button:hover {
  background: #f8fafc;
  border-color: rgba(0, 87, 255, 0.22);
  color: var(--ffn-ed-text, #07101f);
}
.gpt-auth-button.signup-button {
  background: var(--ffn-ed-accent, #0057ff);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 18px 48px rgba(0, 87, 255, 0.22);
}
.gpt-auth-button.signup-button:hover {
  background: #0047d5;
}
[data-theme="dark"] .gpt-auth-button.login-button {
  background: rgba(11, 22, 37, 0.82);
  border-color: rgba(148, 168, 198, 0.16);
  color: var(--gpt-text-secondary, #c2d0e6);
}
[data-theme="dark"] .gpt-auth-button.login-button:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 87, 255, 0.3);
  color: var(--gpt-accent, #63b4ff);
}
.ffn-ed-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid rgba(7, 16, 31, 0.08);
  color: var(--ffn-ed-text-muted, #42516c);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.ffn-ed-theme-toggle.is-desktop {
  width: 2.9rem;
  min-height: 2.9rem;
}
.ffn-ed-theme-toggle.is-mobile {
  width: 2.75rem;
  min-height: 2.75rem;
  box-shadow: 0 12px 30px rgba(21, 45, 91, 0.08);
}
.ffn-ed-theme-toggle:hover {
  transform: translateY(-2px);
  background: #f8fafc;
  border-color: rgba(0, 87, 255, 0.22);
  color: var(--ffn-ed-text, #07101f);
}
.ffn-ed-theme-label {
  display: none;
}
.ffn-ed-theme-icon-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
}
.ffn-ed-theme-icon-wrap svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.ffn-ed-theme-icon--sun {
  opacity: 0;
  transform: scale(0.82) rotate(-16deg);
}
[data-theme="dark"] .ffn-ed-theme-icon--sun {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}
[data-theme="dark"] .ffn-ed-theme-icon--moon {
  opacity: 0;
  transform: scale(0.82) rotate(16deg);
}
[data-theme="dark"] .ffn-ed-theme-toggle {
  background: rgba(11, 22, 37, 0.82);
  border-color: rgba(148, 168, 198, 0.16);
  color: var(--gpt-text-tertiary, #8ea2c0);
}
[data-theme="dark"] .ffn-ed-theme-toggle:hover {
  background: rgba(18, 34, 56, 0.96);
  border-color: rgba(99, 180, 255, 0.28);
  color: #f0f6fc;
}
.gpt-mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(7, 16, 31, 0.08);
  border-radius: 999px;
  background: transparent;
  color: var(--ffn-ed-text-muted, #42516c);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  align-items: center;
  justify-content: center;
}
[data-theme="dark"] .gpt-mobile-menu-btn {
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--gpt-text-secondary, #8b949e);
}
.gpt-mobile-menu-btn:hover {
  transform: translateY(-2px);
  background: #f8fafc;
  border-color: rgba(0, 87, 255, 0.22);
  color: var(--ffn-ed-text, #07101f);
}
.gpt-mobile-nav {
  display: none;
  max-width: 1560px;
  margin: 0 auto;
  padding: 0 0 0.75rem;
  gap: 0.25rem;
  flex-direction: column;
}
.gpt-mobile-nav.open {
  display: none;
}
.gpt-mobile-nav .gpt-nav-link {
  justify-content: flex-start;
  min-height: 44px;
}
@media (max-width: 860px) {
  .gpt-header { padding: 0 1rem; }
  .gpt-header-inner { min-height: 56px; }
  .gpt-header-logo-mark { width: clamp(5.25rem, 26vw, 6.5rem); }
  .gpt-header-subtitle { display: none; }
  .gpt-nav { display: none; }
  .gpt-mobile-controls { display: inline-flex; }
  .gpt-mobile-controls .gpt-auth-button {
    width: 2.75rem;
    min-height: 2.75rem;
    padding: 0;
    box-shadow: 0 12px 30px rgba(21, 45, 91, 0.08);
  }
  .gpt-mobile-controls .gpt-auth-button-label { display: none; }
  .gpt-mobile-menu-btn { display: inline-flex; }
  .gpt-mobile-nav.open { display: flex; }
}
@media (max-width: 520px) {
  .gpt-header { padding: 0 0.5rem; }
  .gpt-header-inner { gap: 0.45rem; }
  .gpt-header-brand { gap: 0.45rem; }
  .gpt-header-wordmark { display: none; }
  .gpt-header-logo-mark { width: clamp(4.35rem, 21vw, 5.15rem); }
  .gpt-mobile-controls { gap: 0.35rem; }
  .ffn-ed-theme-toggle.is-mobile,
  .gpt-mobile-controls .gpt-auth-button {
    width: 2.35rem;
    min-height: 2.35rem;
  }
  .gpt-mobile-menu-btn {
    width: 2.35rem;
    height: 2.35rem;
  }
}