/* NeuroEquity — style.css
   Dark-first landing page for neurodivergent inventor grants.
   Author: Luke Steuber
*/

/* ===== Custom Properties ===== */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-blue: #58a6ff;
  --accent-lavender: #bc8cff;
  --accent-green: #3fb950;
  --accent-blue-dim: rgba(88, 166, 255, 0.15);
  --accent-lavender-dim: rgba(188, 140, 255, 0.15);
  --accent-green-dim: rgba(63, 185, 80, 0.15);
  --border-default: #30363d;
  --border-muted: #21262d;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --transition-fast: 150ms ease;
  --transition-default: 250ms ease;
  --max-width: 1100px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ===== Circuit Background Pattern ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(88, 166, 255, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(188, 140, 255, 0.04) 0%, transparent 50%),
    radial-gradient(1px 1px at 15% 25%, var(--accent-blue) 50%, transparent 50%),
    radial-gradient(1px 1px at 85% 15%, var(--accent-lavender) 50%, transparent 50%),
    radial-gradient(1px 1px at 45% 65%, var(--accent-green) 50%, transparent 50%),
    radial-gradient(1px 1px at 70% 45%, var(--accent-blue) 50%, transparent 50%),
    radial-gradient(1px 1px at 25% 80%, var(--accent-lavender) 50%, transparent 50%),
    radial-gradient(1px 1px at 55% 35%, var(--accent-green) 50%, transparent 50%);
  opacity: 0.4;
  pointer-events: none;
}

/* ===== Accessibility ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 1000;
  padding: 12px 24px;
  background: var(--accent-blue);
  color: var(--bg-primary);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 8px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  margin-bottom: 0.5em;
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

p {
  max-width: 65ch;
}

a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-lavender);
}

code, .mono {
  font-family: var(--font-mono);
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

/* ===== Navigation ===== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-default);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-brand:hover {
  color: var(--accent-blue);
}

.nav-brand svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* ===== Hero ===== */
.hero {
  padding: 120px 0 96px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-green);
  background: var(--accent-green-dim);
  border: 1px solid rgba(63, 185, 80, 0.25);
  border-radius: 999px;
  margin-bottom: 24px;
  animation: fadeInUp 600ms ease both;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  margin-bottom: 24px;
  animation: fadeInUp 600ms 100ms ease both;
}

.hero h1 .highlight-blue {
  color: var(--accent-blue);
}

.hero h1 .highlight-lavender {
  color: var(--accent-lavender);
}

.hero-description {
  max-width: 600px;
  margin: 0 auto 40px;
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  animation: fadeInUp 600ms 200ms ease both;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 600ms 300ms ease both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-default), background var(--transition-default);
}

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

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--accent-blue);
  color: var(--bg-primary);
  box-shadow: 0 0 0 0 rgba(88, 166, 255, 0);
}

.btn-primary:hover {
  background: #79b8ff;
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(88, 166, 255, 0.3);
}

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

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* ===== Section Headers ===== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section-label--blue { color: var(--accent-blue); }
.section-label--lavender { color: var(--accent-lavender); }
.section-label--green { color: var(--accent-green); }

.section-subtitle {
  max-width: 560px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ===== What We Fund — Card Grid ===== */
.fund-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-default);
  border-bottom: 1px solid var(--border-default);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  position: relative;
  padding: 28px 24px;
  background: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-left-width: 3px;
  border-radius: var(--radius-md);
  transition: border-color var(--transition-default), box-shadow var(--transition-default), transform var(--transition-fast);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.card--blue { border-left-color: var(--accent-blue); }
.card--blue:hover { border-color: var(--accent-blue); }
.card--lavender { border-left-color: var(--accent-lavender); }
.card--lavender:hover { border-color: var(--accent-lavender); }
.card--green { border-left-color: var(--accent-green); }
.card--green:hover { border-color: var(--accent-green); }
.card--teal { border-left-color: #39d2c0; }
.card--teal:hover { border-color: #39d2c0; }

.card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.card--blue .card-icon { background: var(--accent-blue-dim); color: var(--accent-blue); }
.card--lavender .card-icon { background: var(--accent-lavender-dim); color: var(--accent-lavender); }
.card--green .card-icon { background: var(--accent-green-dim); color: var(--accent-green); }
.card--teal .card-icon { background: rgba(57, 210, 192, 0.15); color: #39d2c0; }

.card-icon svg {
  width: 22px;
  height: 22px;
}

.card h3 {
  margin-bottom: 8px;
  color: var(--text-primary);
}

.card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Form Sections ===== */
.form-section {
  position: relative;
}

.form-section + .form-section {
  border-top: 1px solid var(--border-default);
}

.form-section--blue { }
.form-section--lavender { background: var(--bg-secondary); }
.form-section--green { }

.form-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.form-info h2 {
  margin-bottom: 16px;
}

.form-info p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.form-info .detail-list {
  list-style: none;
  margin-top: 20px;
}

.form-info .detail-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.form-info .detail-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.form-section--blue .detail-list li::before { background: var(--accent-blue); }
.form-section--lavender .detail-list li::before { background: var(--accent-lavender); }
.form-section--green .detail-list li::before { background: var(--accent-green); }

/* ===== Forms ===== */
.grant-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-section--lavender .form-group input,
.form-section--lavender .form-group textarea {
  background: var(--bg-tertiary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

.form-section--lavender .form-group input:focus,
.form-section--lavender .form-group textarea:focus {
  border-color: var(--accent-lavender);
  box-shadow: 0 0 0 3px rgba(188, 140, 255, 0.15);
}

.form-section--green .form-group input:focus,
.form-section--green .form-group textarea:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 0 3px rgba(63, 185, 80, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.btn-submit {
  align-self: flex-start;
  padding: 12px 32px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-default), background var(--transition-default);
}

.btn-submit:hover {
  transform: translateY(-1px);
}

.btn-submit:active {
  transform: translateY(0);
}

.btn-submit--blue {
  background: var(--accent-blue);
  color: var(--bg-primary);
}

.btn-submit--blue:hover {
  background: #79b8ff;
  box-shadow: 0 4px 16px rgba(88, 166, 255, 0.3);
}

.btn-submit--lavender {
  background: var(--accent-lavender);
  color: var(--bg-primary);
}

.btn-submit--lavender:hover {
  background: #d0a8ff;
  box-shadow: 0 4px 16px rgba(188, 140, 255, 0.3);
}

.btn-submit--green {
  background: var(--accent-green);
  color: var(--bg-primary);
}

.btn-submit--green:hover {
  background: #56d364;
  box-shadow: 0 4px 16px rgba(63, 185, 80, 0.3);
}

/* Form success state */
.form-success {
  display: none;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  text-align: center;
}

.form-success.is-visible {
  display: block;
  animation: fadeInUp 400ms ease both;
}

.form-success--blue {
  background: var(--accent-blue-dim);
  border: 1px solid rgba(88, 166, 255, 0.25);
}

.form-success--lavender {
  background: var(--accent-lavender-dim);
  border: 1px solid rgba(188, 140, 255, 0.25);
}

.form-success--green {
  background: var(--accent-green-dim);
  border: 1px solid rgba(63, 185, 80, 0.25);
}

.form-success h3 {
  margin-bottom: 6px;
}

.form-success--blue h3 { color: var(--accent-blue); }
.form-success--lavender h3 { color: var(--accent-lavender); }
.form-success--green h3 { color: var(--accent-green); }

.form-success p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0 auto;
}

/* ===== Footer ===== */
.site-footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-default);
  background: var(--bg-secondary);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-brand svg {
  width: 22px;
  height: 22px;
}

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

.footer-text a {
  color: var(--text-secondary);
}

.footer-text a:hover {
  color: var(--accent-blue);
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }

  .hero {
    padding: 80px 0 64px;
  }

  .form-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(13, 17, 23, 0.97);
    border-bottom: 1px solid var(--border-default);
    padding: 12px;
    gap: 4px;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
  }

  .nav-toggle {
    display: block;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  section {
    padding: 48px 0;
  }

  .hero {
    padding: 64px 0 48px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }
}