/* ===== CSS VARIABLES ===== */
  :root {
    --green-600: #2d6a4f;
    --green-700: #1b4332;
    --green-100: #e9f5ef;
    --ivory: #f5f1e8;
    --brown-pot: #7a4f35;
    --ink: #263238;
    --radius: 14px;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing (24-28px section padding) */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --section-padding: 1.75rem;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1rem;

    /* Touch targets */
    --touch-target: 44px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Colors for contrast AA */
    --text-primary: var(--ink);
    --text-secondary: #4a5568;
    --border-light: rgba(45, 106, 79, 0.1);
    --border-medium: rgba(45, 106, 79, 0.2);
  }

  /* ===== RESET & BASE STYLES ===== */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

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

  body {
    font-family: var(--font-body);
    font-size: clamp(16px, 2.5vw, 18px);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--ivory);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  img {
    max-width: 100%;
    height: auto;
    display: block;
  }

    img.nav-logo {
    width: 80px;
    height: 60px;
    max-width: none;
    box-shadow: none;
    object-fit: contain;
    border-radius: 8px;
  }

  a {
    text-decoration: none;
    color: inherit;
  }

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
  }

  /* ===== TYPOGRAPHY ===== */
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--green-700);
  }

  h1 {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: var(--spacing-md);
  }

  h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
  }

  h3 {
    font-size: clamp(1.125rem, 3vw, 1.5rem);
  }

  p {
    margin-bottom: var(--spacing-sm);
  }

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

  .container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
  }

  /* ===== STICKY HEADER ===== */
  .header {
    position: sticky;
    top: 0;
    background-color: rgba(245, 241, 232, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 100;
    transition: box-shadow 0.3s ease;
  }

  .header.scrolled {
    box-shadow: var(--shadow-md);
  }

  .nav {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 56px;
  }

  .nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
  }

  .nav-logo {
    width: 100px;
    height: 80px;
    border-radius: 6px;
  }

  .nav-wordmark {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--green-700);
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target);
    height: var(--touch-target);
    color: var(--green-700);
    border-radius: 8px;
    transition: background-color 0.2s ease;
  }

  .nav-toggle:hover {
    background-color: var(--green-100);
  }

  .nav-links {
    display: none;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
  }

  /* Mobile navigation - moved before desktop styles */
  .nav-links.nav-open {
    display: flex !important;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--ivory);
    border: 1px solid var(--border-light);
    border-top: none;
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    transition: all 0.3s ease;
    z-index: 1000;
  }

  .nav-links.nav-open li {
    width: 100%;
  }

  .nav-links.nav-open .nav-link {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 0;
    justify-content: flex-start;
  }

  .nav-links.nav-open .nav-cta {
    margin: var(--spacing-sm) var(--spacing-lg);
    width: auto !important;
    border-radius: var(--radius) !important;
  }

  .nav-link {
    font-weight: 500;
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    transition: color 0.3s ease, background-color 0.3s ease;
    min-height: var(--touch-target);
    display: flex;
    align-items: center;
  }

  .nav-link:hover {
    color: var(--green-600);
    background-color: var(--green-100);
  }

  .nav-cta {
    background-color: var(--green-600) !important;
    color: white !important;
    font-weight: 600;
    border-radius: var(--radius);
    padding: var(--spacing-xs) var(--spacing-md) !important;
  }

  .nav-cta:hover {
    background-color: var(--green-700) !important;
    color: white !important;
  }

  /* ===== HERO SECTION ===== */
  .hero {
    background: linear-gradient(135deg, var(--ivory) 0%, var(--green-100) 100%);
    padding: var(--spacing-xl) 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
  }

  .hero-content {
    display: grid;
    gap: var(--spacing-xl);
    align-items: center;
  }

  .hero-logo-icon {
    width: 56px;
    height: 56px;
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    display: block;
  }

  .hero-title {
    color: var(--green-700);
    margin-bottom: var(--spacing-md);
  }

  .hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-primary);
    opacity: 0.85;
    margin-bottom: var(--spacing-xl);
    max-width: 42rem;
  }

  /* ===== SECTIONS ===== */
  .section {
    padding: var(--section-padding) 0;
  }

  .section-alt {
    background-color: var(--green-100);
  }

  .section-cta {
    background-color: var(--green-700);
    color: white;
    text-align: center;
  }

  .section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
  }

  .section-title {
    color: var(--green-700);
  }

  .section-cta .section-title,
  .cta-title {
    color: white;
  }

  .cta-content {
    max-width: 32rem;
    margin: 0 auto;
  }

  .cta-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
  }

  /* ===== CARD LAYOUTS ===== */
  .cards {
    display: grid;
    gap: var(--spacing-md);
  }

  .card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-light);
  }

  .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }

  .card-icon {
    width: 48px;
    height: 48px;
    background-color: var(--green-100);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--green-600);
  }

  .card-title {
    color: var(--green-700);
    margin-bottom: var(--spacing-sm);
  }

  .card-text {
    color: var(--text-secondary);
    line-height: 1.6;
  }

  /* ===== FORMS ===== */
  .waitlist-form {
    margin-top: var(--spacing-lg);
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
  }

  .form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-medium);
    border-radius: var(--radius);
    font-size: 1rem;
    background-color: white;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    min-height: var(--touch-target);
  }

  .form-input:focus {
    outline: none;
    border-color: var(--green-600);
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
  }

  .form-help {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
  }

  .form-status {
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    font-weight: 500;
    text-align: center;
    margin-top: var(--spacing-sm);
    display: none;
  }

  .form-status.success {
    background-color: var(--green-100);
    color: var(--green-700);
    border: 1px solid var(--green-600);
  }

  .form-status.error {
    background-color: #fef2f2;
    color: #dc2626;
    border: 1px solid #fca5a5;
  }

  /* ===== BUTTONS ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    min-height: var(--touch-target);
    cursor: pointer;
    border: 2px solid transparent;
  }

  .btn-primary {
    background-color: var(--green-600);
    color: white;
    width: 100%;
  }

  .btn-primary:hover {
    background-color: var(--green-700);
    transform: translateY(-1px);
  }

  .btn-primary:disabled {
    background-color: rgba(45, 106, 79, 0.5);
    cursor: not-allowed;
    transform: none;
  }

  .btn-secondary {
    background-color: transparent;
    color: var(--green-600);
    border-color: var(--green-600);
    width: 100%;
  }

  .btn-secondary:hover {
    background-color: var(--green-600);
    color: white;
  }

  .btn-icon {
    transition: transform 0.2s ease;
  }

  .btn:hover .btn-icon {
    transform: translateX(2px);
  }

  /* ===== PHONE MOCKUP ===== */
  .hero-visual {
    display: flex;
    justify-content: center;
  }

  .phone-mockup {
    max-width: 280px;
    width: 100%;
  }

  .iphone {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
  }

  .phone-screen {
    padding: var(--spacing-sm);
    font-family: var(--font-body);
    font-size: 14px;
    height: 100%;
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
  }

  .app-bar {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 24px 16px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
  }

  .app-icon {
    width: 84px;
    height: 72px;
    border-radius: 18px;
    margin: 0 auto;
    display: block;
  }

  .app-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 22px;
    margin-left: 12px;
    color: var(--green-700);
  }

  .collection-card {
    background-color: var(--green-100);
    border-radius: 12px;
    padding: var(--spacing-md);
    flex: 1;
  }

  .collection-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--green-700);
    margin-bottom: 16px;
  }

  .members {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
  }

  .member-avatars {
    display: flex;
    gap: 4px;
  }

  .avatar {
    width: 22px;
    height: 22px;
    background-color: var(--green-600);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.5rem;
    font-weight: 600;
  }

  .avatar-more {
    width: 22px;
    height: 22px;
    background-color: var(--brown-pot);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.5rem;
    font-weight: 600;
  }

  .member-count {
    font-size: 0.75rem;
    color: var(--text-secondary);
  }

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

  .goal-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-size: 0.75rem;
  }

  .goal-label {
    color: var(--text-secondary);
  }

  .goal-raised {
    color: var(--green-700);
    font-weight: 600;
  }

  .progress {
    margin-bottom: var(--spacing-xs);
  }

  .progress-bar {
    height: 6px;
    background-color: rgba(45, 106, 79, 0.2);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
  }

  .progress-fill {
    height: 100%;
    background-color: var(--green-600);
    transition: width 0.3s ease;
  }

  .progress-text {
    font-size: 0.625rem;
    color: var(--green-700);
    font-weight: 600;
  }

  .contribute-btn {
    width: 100%;
    background-color: var(--green-600);
    color: white;
    padding: var(--spacing-sm);
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.75rem;
    border: none;
    cursor: pointer;
  }

  /* ===== STEPPER - SIX STEPS ===== */
  .stepper-six {
    display: grid;
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
  }

  .step-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
  }

  .step-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }

  .step-number {
    width: 40px;
    height: 40px;
    background-color: var(--green-600);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
  }

  .step-icon {
    width: 40px;
    height: 40px;
    background-color: var(--green-100);
    color: var(--green-600);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .step-content {
    flex: 1;
    padding-top: 4px;
  }

  .step-title {
    color: var(--green-700);
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1.125rem, 3vw, 1.25rem);
  }

  .step-text {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
  }

  /* Keep the original stepper for backward compatibility */
  .stepper {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 600px;
    margin: 0 auto;
  }

  .step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    padding: var(--spacing-lg) 0;
  }

  .step .step-number {
    width: 48px;
    height: 48px;
    background-color: var(--green-600);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
    z-index: 2;
    position: relative;
  }

  .step .step-content {
    flex: 1;
    padding-top: 8px;
  }

  .step .step-title {
    color: var(--green-700);
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1.125rem, 3vw, 1.375rem);
  }

  .step .step-text {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
  }

  .step-connector {
    display: none;
  }

  /* ===== FAQ ===== */
  .faq {
    max-width: 48rem;
    margin: 0 auto;
  }

  .faq-item {
    background-color: white;
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
  }

  .faq-question {
    padding: var(--spacing-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--green-700);
    list-style: none;
    min-height: var(--touch-target);
    transition: background-color 0.2s ease;
  }

  .faq-question:hover {
    background-color: var(--green-100);
  }

  .faq-question::-webkit-details-marker {
    display: none;
  }

  .faq-chevron {
    transition: transform 0.3s ease;
    color: var(--green-600);
    flex-shrink: 0;
  }

  .faq-item[open] .faq-chevron {
    transform: rotate(180deg);
  }

  .faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
  }

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

  /* ===== FOOTER ===== */
  .footer {
    background-color: var(--ink);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
  }

  .footer-text {
    opacity: 0.7;
    font-size: 0.875rem;
    margin-bottom: 0;
  }

  /* ===== STICKY BOTTOM CTA ===== */
  .sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: white;
    border-top: 1px solid var(--border-light);
    padding: var(--spacing-sm);
    z-index: 50;
    display: block;
    box-shadow: var(--shadow-lg);
  }

  /* ===== MEDIA QUERIES ===== */
  @media (min-width: 640px) {
    :root {
      --section-padding: 2.5rem;
    }

    .form-group {
      flex-direction: row;
    }

    .btn-primary,
    .btn-secondary {
      width: auto;
      flex-shrink: 0;
    }

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

    .sticky-cta {
      display: none;
    }

    .stepper {
      max-width: 800px;
    }

    .step {
      gap: var(--spacing-xl);
    }

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

  @media (min-width: 768px) {
    .nav-toggle {
      display: none;
    }

    .nav-links {
      display: flex;
    }

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

    .cards {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  @media (min-width: 900px) {
    .stepper-six {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  @media (min-width: 1024px) {
    :root {
      --container-padding: 2rem;
      --section-padding: 3rem;
    }

    .hero {
      padding: var(--spacing-xl) 0 calc(var(--spacing-xl) * 1.5);
    }

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

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

  @media (min-width: 1200px) {
    .cards {
      grid-template-columns: repeat(4, 1fr);
    }
  }

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

    html {
      scroll-behavior: auto;
    }

    .card:hover {
      transform: none;
    }

    .step-card:hover {
      transform: none;
    }

    .btn:hover {
      transform: none;
    }

    .btn:hover .btn-icon {
      transform: none;
    }
  }

  /* ===== FOCUS STYLES ===== */
  button:focus-visible,
  input:focus-visible,
  a:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--green-600);
    outline-offset: 2px;
  }

  /* ===== HIGH CONTRAST MODE ===== */
  @media (prefers-contrast: high) {
    .card {
      border: 2px solid var(--green-600);
    }

    .step-card {
      border: 2px solid var(--green-600);
    }

    .nav-link:hover {
      background-color: var(--green-600);
      color: white;
    }

    .faq-question:hover {
      background-color: var(--green-600);
      color: white;
    }
  }