/* ========================================
   AWS Brand Variables & Base Styles
   Professional & Clean Design
   ======================================== */

:root {
  /* Primary Colors (AWS Brand - Used Sparingly) */
  --color-navy: #1A365E;
  --color-navy-light: #2a4a7a;
  --color-navy-dark: #0f2340;
  --color-red: #D61F31;
  --color-red-light: #e04050;
  --color-red-dark: #b01828;

  /* Accent Colors - Blue Theme */
  --color-gold: #1A365E;
  --color-gold-light: #2a4a7a;

  /* Neutral Colors - Primary Palette */
  --color-white: #FFFFFF;
  --color-off-white: #FAFAFA;
  --color-light-gray: #F5F5F5;
  --color-gray: #E8E8E8;
  --color-medium-gray: #9CA3AF;
  --color-dark-gray: #4B5563;
  --color-charcoal: #1F2937;
  --color-black: #111827;

  /* Text Colors */
  --text-primary: #1F2937;
  --text-secondary: #4B5563;
  --text-muted: #6B7280;
  --text-light: #9CA3AF;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  --gradient-subtle: linear-gradient(180deg, var(--color-off-white) 0%, var(--color-white) 100%);
  --gradient-dark: linear-gradient(180deg, var(--color-charcoal) 0%, var(--color-black) 100%);

  /* Typography */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;

  /* Font Sizes - Larger Headers */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;
  --text-7xl: 6rem;
  --text-8xl: 8rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  --spacing-4xl: 8rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.4s ease;
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows - Subtle */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Z-Index Scale */
  --z-background: -1;
  --z-default: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal-backdrop: 40;
  --z-modal: 50;
  --z-popover: 60;
  --z-tooltip: 70;
}

/* ========================================
   Base Reset & Typography
   ======================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
  font-size: 16px;
  overflow-x: clip;
}

body {
  font-family: var(--font-primary);
  background: var(--color-white);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Headings - Clean & Professional */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.1;
  color: var(--text-primary);
  font-weight: 600;
}

h1 { font-size: clamp(3rem, 8vw, var(--text-8xl)); }
h2 { font-size: clamp(2.5rem, 6vw, var(--text-6xl)); }
h3 { font-size: clamp(1.5rem, 3vw, var(--text-3xl)); }

p {
  color: var(--text-secondary);
  line-height: 1.8;
}

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

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

/* ========================================
   Professional Utility Classes
   ======================================== */

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-sm {
  max-width: 900px;
}

.container-lg {
  max-width: 1600px;
}

@media (max-width: 640px) {
  .container {
    padding: 0 1.25rem;
  }
}

@media (max-width: 360px) {
  .container {
    padding: 0 1rem;
  }
}

/* Text Colors - Headers Only */
.text-navy { color: var(--color-navy); }
.text-red { color: var(--color-red); }
.text-gold { color: var(--color-gold); }
.text-white { color: var(--color-white); }
.text-muted { color: var(--text-muted); }

/* Background Colors - Neutral */
.bg-white { background-color: var(--color-white); }
.bg-off-white { background-color: var(--color-off-white); }
.bg-light { background-color: var(--color-light-gray); }
.bg-dark { background-color: var(--color-charcoal); }
.bg-navy { background-color: var(--color-navy); }

/* Selection */
::selection {
  background: var(--color-navy);
  color: var(--color-white);
}