/* TradeGenerate Brand System
   Palette (sampled from the logo):
   navy: #1D577C — text, headings, primary UI (7.32:1 AAA contrast on background)
   teal: #9ACFC7 — accent only (borders, visual fills, decorative)
   background: #F5F9FA — page background
   
   CRITICAL ACCESSIBILITY RULE:
   The teal (#9ACFC7) must NEVER be used for text or for any UI element
   conveying meaning on its own. Body text and all readable content is navy.
*/

:root {
  --tg-navy: #1D577C;
  --tg-navy-dark: #143e59;
  --tg-navy-light: #2873a3;
  --tg-teal: #9ACFC7;
  --tg-teal-light: #e5f4f1;
  --tg-bg: #F5F9FA;
  --tg-card-bg: #FFFFFF;
  --tg-border: #DDE8EB;
  --tg-border-focus: #1D577C;
  --tg-text: #1D577C;
  --tg-text-muted: #385E75;
  --tg-badge-bg: #E1EFF1;
  --tg-warning-bg: #FFF3E0;
  --tg-warning-border: #FFE0B2;
  --tg-warning-text: #B78103;
  --tg-success-bg: #E8F5E9;
  --tg-success-border: #C8E6C9;
  --tg-success-text: #1B5E20;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 3px rgba(29, 87, 124, 0.05);
  --shadow-md: 0 4px 12px rgba(29, 87, 124, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--tg-bg);
  color: var(--tg-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Accessibility: Clear, visible focus states */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--tg-navy);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--tg-navy);
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  z-index: 1000;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  background-color: var(--tg-bg);
  border-bottom: 1px solid var(--tg-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 0.75rem;
}

.brand-logo {
  height: 48px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--tg-navy);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-link:hover {
  text-decoration: underline;
}

.btn-nav {
  background-color: var(--tg-navy);
  color: #FFFFFF;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background-color 0.15s ease;
}

.btn-nav:hover {
  background-color: var(--tg-navy-dark);
}

/* Main Content */
main {
  flex: 1;
}

/* Hero */
.hero {
  padding: 5rem 0 3.5rem;
  text-align: center;
}

.badge {
  display: inline-block;
  background-color: var(--tg-badge-bg);
  color: var(--tg-navy);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border: 1px solid var(--tg-teal);
}

.hero h1 {
  font-size: 2.75rem;
  line-height: 1.2;
  font-weight: 800;
  color: var(--tg-navy);
  margin-bottom: 1.5rem;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.hero p.lead {
  font-size: 1.25rem;
  color: var(--tg-text-muted);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  line-height: 1.5;
}

/* Early Access Form */
.form-card {
  background: var(--tg-card-bg);
  border: 1px solid var(--tg-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  max-width: 520px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
  text-align: left;
}

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

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  color: var(--tg-navy);
}

.form-input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--tg-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: var(--tg-navy);
  background-color: var(--tg-bg);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.form-input:focus {
  border-color: var(--tg-border-focus);
  background-color: #FFFFFF;
}

.form-input::placeholder {
  color: #728F9E;
}

.btn-primary {
  width: 100%;
  background-color: var(--tg-navy);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.95rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.btn-primary:hover {
  background-color: var(--tg-navy-dark);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-note {
  font-size: 0.85rem;
  color: var(--tg-text-muted);
  margin-top: 0.85rem;
  text-align: center;
}

.form-note a {
  color: var(--tg-navy);
  text-decoration: underline;
}

.form-error-alert {
  display: none;
  background-color: #FDF2F2;
  border: 1px solid #F8B4B4;
  color: #9B1C1C;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.form-error-alert.active {
  display: block;
}

/* Confirmation State */
.confirmation-card {
  display: none;
  background: var(--tg-card-bg);
  border: 1px solid var(--tg-success-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  max-width: 520px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.confirmation-card.active {
  display: block;
}

.confirmation-icon {
  width: 56px;
  height: 56px;
  background-color: var(--tg-success-bg);
  color: var(--tg-success-text);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin: 0 auto 1.25rem;
}

.confirmation-card h2 {
  font-size: 1.5rem;
  color: var(--tg-navy);
  margin-bottom: 0.75rem;
}

.confirmation-card p {
  color: var(--tg-text-muted);
  font-size: 1rem;
  line-height: 1.5;
}

/* How It Works Section */
.section {
  padding: 4.5rem 0;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  color: var(--tg-navy);
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  font-size: 1.15rem;
  color: var(--tg-text-muted);
  max-width: 640px;
  margin: 0 auto 3rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--tg-card-bg);
  border: 1px solid var(--tg-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.feature-num {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--tg-navy);
  background: var(--tg-badge-bg);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  border: 1px solid var(--tg-teal);
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--tg-navy);
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--tg-text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Why The Board Is Empty (Load-Bearing Section) */
.empty-board-section {
  background: var(--tg-card-bg);
  border-top: 1px solid var(--tg-border);
  border-bottom: 1px solid var(--tg-border);
  padding: 5rem 0;
}

.board-container {
  max-width: 800px;
  margin: 0 auto;
}

.board-visual {
  border: 2px dashed var(--tg-teal);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  text-align: center;
  background-color: var(--tg-bg);
  margin-bottom: 2.5rem;
}

.board-visual-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.board-visual h3 {
  font-size: 1.35rem;
  color: var(--tg-navy);
  margin-bottom: 0.5rem;
}

.board-visual p {
  color: var(--tg-text-muted);
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto;
}

.board-explanation h2 {
  font-size: 2rem;
  color: var(--tg-navy);
  margin-bottom: 1.25rem;
}

.board-explanation p {
  color: var(--tg-text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.highlight-box {
  background-color: #FFFFFF;
  border-left: 4px solid var(--tg-teal);
  border-top: 1px solid var(--tg-border);
  border-right: 1px solid var(--tg-border);
  border-bottom: 1px solid var(--tg-border);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.75rem 0;
  font-weight: 500;
  color: var(--tg-navy);
}

/* Risk Warning (Prominent & Visible) */
.risk-section {
  padding: 3.5rem 0;
}

.risk-card {
  background: #FFFFFF;
  border: 1px solid var(--tg-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.risk-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.risk-badge {
  background-color: var(--tg-navy);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.risk-card h3 {
  font-size: 1.15rem;
  color: var(--tg-navy);
}

.risk-card p {
  font-size: 0.92rem;
  color: var(--tg-text-muted);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.risk-card p:last-child {
  margin-bottom: 0;
}

/* Footer */
footer {
  background-color: var(--tg-bg);
  border-top: 1px solid var(--tg-border);
  padding: 3rem 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--tg-navy);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.footer-link:hover {
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--tg-border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--tg-text-muted);
}

/* Legal Pages Styling */
.legal-content {
  padding: 4rem 0 6rem;
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 2.5rem;
  color: var(--tg-navy);
  margin-bottom: 0.5rem;
}

.legal-updated {
  font-size: 0.95rem;
  color: var(--tg-text-muted);
  margin-bottom: 2.5rem;
}

.legal-section {
  margin-bottom: 2.5rem;
}

.legal-section h2 {
  font-size: 1.4rem;
  color: var(--tg-navy);
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--tg-border);
  padding-bottom: 0.5rem;
}

.legal-section p,
.legal-section ul {
  color: var(--tg-text-muted);
  font-size: 1rem;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.legal-section ul {
  padding-left: 1.5rem;
}

.legal-section li {
  margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 860px) {
  .grid-3 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hero h1 {
    font-size: 2.15rem;
  }

  .hero p.lead {
    font-size: 1.1rem;
  }
}