@import "tailwindcss";

@theme {
  --color-primary: #0E2A47;
  --color-accent-green: #2FA66A;
  --color-bg-color: #F8F9FA;
  --color-secondary-bg: #E6E9ED;
  --color-text-primary: #1F2933;
  --color-text-secondary: #6B7280;
  
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

:root {
  --primary-color: #0E2A47;
  --bg-color: #F8F9FA;
  --secondary-bg: #E6E9ED;
  --text-secondary: #6B7280;
  --text-primary: #1F2933;
  --accent-green: #2FA66A;
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 80px;
  --bottom-nav-height: 0px;
  --safe-area-bottom: env(safe-area-inset-bottom);
  --safe-area-top: env(safe-area-inset-top);
  --safe-area-left: env(safe-area-inset-left);
  --safe-area-right: env(safe-area-inset-right);
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
}

@layer base {
  *, ::after, ::before {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }

  body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    margin: 0;
  }

  h1, h2, h3, h4, h5, h6 {
    color: var(--primary-color);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
    text-wrap: balance;
  }

  h1 {
    font-size: clamp(2rem, 8vw, 3.5rem);
    hyphens: auto;
    font-weight: 800;
    letter-spacing: -0.03em;
  }

  h2 {
    font-size: clamp(1.5rem, 6vw, 2.5rem);
    position: relative;
    display: block;
    margin-bottom: var(--spacing-xl);
    font-weight: 700;
  }

  h2:not(.no-underline)::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 48px;
    height: 4px;
    background: var(--accent-green);
    border-radius: 2px;
  }

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

  section {
    padding: clamp(3rem, 8vw, 6rem) 0;
  }

  .cta-button {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border: none;
    cursor: pointer;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.8rem;
    border-radius: 8px;
    min-height: 48px;
  }

  .nav-link {
    position: relative;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
  }

  .nav-link:hover, .nav-link.active {
    color: var(--accent-green);
  }

  .mobile-nav {
    display: none;
  }

  @media (max-width: 768px) {
    :root {
      --header-height: 64px;
      --bottom-nav-height: 72px;
    }

    .mobile-nav {
      display: flex;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(24px);
      border-top: 0.5px solid rgba(0, 0, 0, 0.08);
      justify-content: space-around;
      align-items: flex-start;
      z-index: 1000;
      padding-top: 8px;
    }

    .mobile-nav-link {
      display: flex;
      flex-direction: column;
      align-items: center;
      color: #9ca3af;
      font-size: 0.625rem;
      font-weight: 600;
      text-transform: uppercase;
      flex: 1;
      padding: 8px 4px;
    }

    .mobile-nav-link.active {
      color: var(--primary-color);
    }
  }

  .scroll-top-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
  }

  .scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
  }
}