/* ==========================================
   WAVE 1 DESIGN SYSTEM — SHARED CHASSIS
   Reusable for organoidbank, silica, OTS
   ========================================== */

/* TOKENS — theme-agnostic */
:root {
  /* Neutral palette */
  --color-white: #ffffff;
  --color-black: #000000;
  --color-navy: #1a1f3a;
  --color-gray-95: #f7f7f9;
  --color-gray-90: #e8e9ed;
  --color-gray-70: #b8bacc;
  --color-gray-50: #7d7f98;
  --color-gray-30: #4a4d66;

  /* Accent palette — theme-aware (override in skin) */
  --accent-primary: #0066cc;
  --accent-secondary: #0052a3;
  --accent-teal: #7ee4d2;
  --accent-light: #f0f8f7;

  /* Semantic */
  --color-text-primary: var(--color-navy);
  --color-text-secondary: var(--color-gray-50);
  --color-border: var(--color-gray-90);
  --color-bg-light: var(--color-gray-95);
  --color-bg-dark: var(--color-navy);

  /* Typography scale */
  --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.5rem;    /* 24px */
  --font-size-2xl: 2rem;     /* 32px */
  --font-size-3xl: 2.5rem;   /* 40px */
  --font-size-4xl: 3rem;     /* 48px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing scale */
  --spacing-xs: 0.25rem;  /* 4px */
  --spacing-sm: 0.5rem;   /* 8px */
  --spacing-md: 1rem;     /* 16px */
  --spacing-lg: 1.5rem;   /* 24px */
  --spacing-xl: 2rem;     /* 32px */
  --spacing-2xl: 3rem;    /* 48px */
  --spacing-3xl: 4rem;    /* 64px */

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--spacing-lg);

  /* Effects */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 300ms ease-out;
}

/* ==========================================
   RESET & GLOBAL
   ========================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ==========================================
   UTILITY CLASSES
   ========================================== */

.container {
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.eyebrow {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  display: block;
}

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 100;
}

.skip-to-content a:focus {
  top: 0;
}

/* ==========================================
   BUTTONS
   ========================================== */

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  white-space: nowrap;
}

.button.primary {
  background: var(--accent-primary);
  color: var(--color-white);
  border-color: var(--accent-primary);
}

.button.primary:hover {
  background: var(--accent-secondary);
  border-color: var(--accent-secondary);
  box-shadow: var(--shadow-md);
}

.button.secondary {
  background: transparent;
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.button.secondary:hover {
  background: var(--accent-light);
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

/* ==========================================
   ANNOUNCEMENT BAR
   ========================================== */

.announcement {
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
  font-size: var(--font-size-sm);
}

.announcement a {
  font-weight: var(--font-weight-semibold);
}

/* ==========================================
   NAVIGATION
   ========================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--accent-primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.mobile-menu {
  display: none;
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-bg-light) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.hero-text {
  display: flex;
  flex-direction: column;
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.hero-copy {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.hero-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Workflow visual */
.workflow-visual {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.visual-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.flow {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.flow-step {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
  padding: var(--spacing-md);
  border-left: 2px solid var(--accent-primary);
  border-radius: var(--radius-sm);
}

.flow-num {
  min-width: 2rem;
  height: 2rem;
  background: var(--accent-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.flow-name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.flow-status {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

.flow-step span {
  margin-left: auto;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
}

.visual-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ==========================================
   SECTIONS
   ========================================== */

.section {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background: var(--color-white);
}

.section.white {
  background: var(--color-bg-light);
}

.section.navy {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.section.navy h2,
.section.navy h3 {
  color: var(--color-white);
}

.section.navy p,
.section.navy a {
  color: rgba(255, 255, 255, 0.9);
}

.section-head {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-head p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

/* ==========================================
   PROBLEM SECTION
   ========================================== */

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.problem-callout {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-top: var(--spacing-lg);
}

.problem-copy {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.pill {
  display: inline-block;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 100px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
}

/* ==========================================
   CARDS
   ========================================== */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.card {
  padding: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.section.white .card {
  background: var(--color-white);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.card .number {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card h3 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.card p {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ==========================================
   BOUNDARY SECTION
   ========================================== */

.boundary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.boundary-card {
  padding: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.boundary-card h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.boundary-card ul {
  list-style: none;
}

.boundary-card li {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-text-secondary);
}

.boundary-card.do li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-weight: var(--font-weight-bold);
}

.boundary-card.no li::before {
  content: "−";
  position: absolute;
  left: 0;
  color: var(--color-gray-70);
  font-weight: var(--font-weight-bold);
}

/* ==========================================
   ROLES / SOLUTIONS
   ========================================== */

.roles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.role {
  padding: var(--spacing-xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.role h3 {
  margin-bottom: var(--spacing-md);
}

.role p {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ==========================================
   DESIGN PARTNER SECTION
   ========================================== */

.design-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.design-grid h2 {
  margin-bottom: var(--spacing-lg);
}

.design-grid p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.checks {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.check {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ==========================================
   TRUST SECTION
   ========================================== */

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.trust-item {
  padding: var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.trust-item strong {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.trust-item span {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ==========================================
   CTA SECTION
   ========================================== */

.final-cta {
  text-align: center;
}

.final-cta h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.final-cta p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
  background: var(--color-navy);
  color: var(--color-white);
  padding: var(--spacing-3xl) var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-logo {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  color: var(--accent-teal);
}

.footer-grid p {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

.footer-grid h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-grid a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.footer-grid a:hover {
  color: var(--accent-teal);
}

.footer-note {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.6);
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --container-padding: var(--spacing-md);
  }

  .hero-grid,
  .problem-grid,
  .design-grid,
  .boundary {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

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

  .trust-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-links {
    display: none;
  }

  .mobile-menu {
    display: inline-block;
  }

  .flow-step {
    padding: var(--spacing-md);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl: 1rem;
    --spacing-3xl: 2rem;
    --spacing-2xl: 1.5rem;
  }

  .hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero-copy {
    font-size: var(--font-size-base);
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .trust-strip {
    grid-template-columns: 1fr;
  }

  .cards {
    gap: var(--spacing-md);
  }

  .card {
    padding: var(--spacing-lg);
  }
}

/* ==========================================
   PRINT & ACCESSIBILITY
   ========================================== */

@media print {
  .nav,
  .announcement,
  .footer {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus states for keyboard navigation */
.button:focus,
a:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Form styles */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--color-text-primary);
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 14px;
  color: var(--color-text-primary);
  background: white;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.checkbox {
  display: flex;
  align-items: flex-start;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text-primary);
}

.checkbox input[type="checkbox"] {
  width: auto;
  min-width: 18px;
  height: 18px;
  margin-right: 8px;
  margin-top: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox a {
  color: var(--accent-primary);
  text-decoration: underline;
}

.cf-turnstile {
  margin: 20px 0;
}

#form-message {
  padding: 15px;
  border-radius: 4px;
  font-weight: 500;
  text-align: center;
  margin-bottom: 20px;
}

#form-message.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

#form-message.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

#fallback-actions {
  display: flex !important;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

/* Dark mode support (optional for future) */
@media (prefers-color-scheme: dark) {
  body {
    background: var(--color-navy);
    color: rgba(255, 255, 255, 0.9);
  }

  .nav {
    background: var(--color-navy);
  }

  .section {
    background: var(--color-navy);
    color: rgba(255, 255, 255, 0.9);
  }

  .section.white {
    background: #2a2f48;
    color: rgba(255, 255, 255, 0.9);
  }

  .card,
  .boundary-card,
  .workflow-visual {
    background: #2a2f48;
    border-color: rgba(255, 255, 255, 0.1);
  }
}