/* Global CSS Configuration */

@tailwind base;
@tailwind components;
@tailwind utilities;

@layer base {
  :root {
    /* Global Color Variables */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #7c3aed;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #0f172a;
    --color-muted: #64748b;
    --color-border: #e2e8f0;
    --color-success: #16a34a;
    --color-warning: #f59e0b;
    --color-danger: #dc2626;

    /* Global Spacing Variables */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 20px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 72px;
    --space-3xl: 96px;
  }

  /* Global Body */
  body {
    @apply bg-[var(--color-bg)] text-[var(--color-text)] font-sans antialiased;
    font-size: 15px; /* Mobile */
  }
  @media (min-width: 640px) { body { font-size: 16px; } }
  @media (min-width: 1024px) { body { font-size: 18px; } }

  /* Small Text */
  small { font-size: 13px; }
  @media (min-width: 640px) { small { font-size: 14px; } }
  @media (min-width: 1024px) { small { font-size: 14px; } }

  /* Global Headings */
  h1, h2, h3, h4, h5, h6 {
    @apply font-bold tracking-tight text-[var(--color-text)];
  }

  h1 { font-size: 34px; line-height: 1.2; }
  @media (min-width: 640px) { h1 { font-size: 44px; } }
  @media (min-width: 1024px) { h1 { font-size: 56px; } }

  h2 { font-size: 28px; line-height: 1.25; }
  @media (min-width: 640px) { h2 { font-size: 36px; } }
  @media (min-width: 1024px) { h2 { font-size: 44px; } }

  h3 { font-size: 24px; line-height: 1.3; }
  @media (min-width: 640px) { h3 { font-size: 28px; } }
  @media (min-width: 1024px) { h3 { font-size: 32px; } }

  h4 { font-size: 20px; line-height: 1.4; }
  @media (min-width: 640px) { h4 { font-size: 22px; } }
  @media (min-width: 1024px) { h4 { font-size: 24px; } }

  p {
    @apply mb-4 leading-relaxed;
  }

  a {
    @apply text-[var(--color-primary)] hover:text-[var(--color-primary-dark)] transition-colors;
  }

  input, textarea, select {
    @apply font-sans;
  }

  img {
    @apply max-w-full h-auto rounded-lg;
  }
}

@layer components {
  /* Container System */
  .site-container {
    @apply w-[92%] mx-auto;
    max-width: 1200px; /* Desktop */
  }
  @media (min-width: 1280px) {
    .site-container {
      max-width: 1320px; /* Large Desktop */
    }
  }

  /* Section Padding */
  .section-padding {
    padding-top: 56px;
    padding-bottom: 56px;
  }
  @media (min-width: 640px) {
    .section-padding { padding-top: 72px; padding-bottom: 72px; }
  }
  @media (min-width: 1024px) {
    .section-padding { padding-top: 96px; padding-bottom: 96px; }
  }

  /* Typography Utilities */
  .text-gradient {
    @apply bg-clip-text text-transparent bg-gradient-to-r from-[var(--color-primary)] to-[var(--color-secondary)];
  }
  .page-header {
    @apply text-center mb-12;
  }

  /* Buttons */
  .btn-primary, .btn-secondary, .btn-outline, .btn-small, .btn-large {
    @apply inline-flex items-center justify-center font-medium rounded-lg transition-all duration-200 cursor-pointer min-h-[44px];
    padding: 0 24px;
  }
  .btn-primary {
    @apply bg-[var(--color-primary)] text-white shadow-sm hover:shadow hover:bg-[var(--color-primary-dark)] hover:-translate-y-0.5 active:scale-95;
  }
  .btn-secondary {
    @apply bg-[var(--color-secondary)] text-white shadow-sm hover:shadow hover:opacity-90 hover:-translate-y-0.5 active:scale-95;
  }
  .btn-outline {
    @apply border-2 border-[var(--color-primary)] text-[var(--color-primary)] bg-transparent hover:bg-[var(--color-primary)] hover:text-white;
  }
  .btn-small {
    min-height: 36px;
    padding: 0 16px;
    font-size: 14px;
  }
  .btn-large {
    min-height: 56px;
    padding: 0 32px;
    font-size: 18px;
  }
  .btn-primary:disabled, .btn-secondary:disabled, .btn-outline:disabled {
    @apply opacity-50 cursor-not-allowed transform-none hover:shadow-none hover:bg-opacity-100;
  }

  /* Cards */
  .card, .card-sm, .card-lg {
    @apply bg-[var(--color-surface)] border border-[var(--color-border)] rounded-xl shadow-sm overflow-hidden;
  }
  .card { padding: var(--space-md); }
  .card-sm { padding: var(--space-sm); }
  .card-lg { padding: var(--space-lg); }

  .card-hover {
    @apply transition-all duration-300 hover:shadow-lg hover:-translate-y-1 hover:border-[var(--color-primary)]/30;
  }

  /* Forms */
  .form-group {
    @apply flex flex-col gap-2 mb-4;
  }
  .form-label {
    @apply font-medium text-[var(--color-text)] text-sm;
  }
  .form-input, .form-textarea, .form-select {
    @apply w-full border border-[var(--color-border)] rounded-lg px-4 py-2.5 text-[var(--color-text)] bg-[var(--color-surface)] transition-colors focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)]/20 focus:border-[var(--color-primary)];
  }
  .form-textarea {
    @apply min-h-[120px] resize-y;
  }
  .form-input:disabled, .form-textarea:disabled, .form-select:disabled {
    @apply bg-slate-50 text-[var(--color-muted)] cursor-not-allowed;
  }
  .form-error {
    @apply border-[var(--color-danger)] focus:border-[var(--color-danger)] focus:ring-[var(--color-danger)]/20;
  }
  .form-error-msg {
    @apply text-[var(--color-danger)] text-sm mt-1;
  }

  /* Badges */
  .badge {
    @apply inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium bg-[var(--color-primary)]/10 text-[var(--color-primary)];
  }
}

@layer utilities {
  /* Responsive Grid System */
  .responsive-grid, .grid-2, .grid-3, .grid-4 {
    @apply grid gap-6;
    grid-template-columns: 1fr; /* Mobile Default */
  }

  /* Tablet (640px+) */
  @media (min-width: 640px) {
    .grid-2, .grid-3, .grid-4, .responsive-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  /* Desktop (1024px+) */
  @media (min-width: 1024px) {
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
    .grid-4 {
      grid-template-columns: repeat(4, 1fr);
    }
    .responsive-grid {
      grid-template-columns: repeat(3, 1fr); /* Default responsive desktop */
    }
  }
}