/* ===================================
   Quadracom Main CSS
   Modern, Professional IT Solutions
   =================================== */

/* CSS Variables - Color Palette */
:root {
  /* Primary Colors */
  --primary-deep-blue: #0A2463;
  --primary-teal: #00B4D8;
  --primary-bright-blue: #0096C7;

  /* Neutral Colors */
  --neutral-lightest: #F8F9FA;
  --neutral-light: #E9ECEF;
  --neutral-medium: #DEE2E6;
  --neutral-dark: #495057;
  --neutral-darkest: #212529;

  /* Success & Accent */
  --success-green: #10B981;
  --warning-orange: #F59E0B;
  --error-red: #EF4444;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-deep-blue) 0%, var(--primary-bright-blue) 100%);
  --gradient-accent: linear-gradient(135deg, var(--primary-bright-blue) 0%, var(--primary-teal) 100%);
  --gradient-hero: linear-gradient(135deg, rgba(10, 36, 99, 0.95) 0%, rgba(0, 150, 199, 0.85) 100%);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-secondary: 'Poppins', sans-serif;

  /* Font Sizes */
  --fs-xs: 0.75rem;      /* 12px */
  --fs-sm: 0.875rem;     /* 14px */
  --fs-base: 1rem;       /* 16px */
  --fs-md: 1.125rem;     /* 18px */
  --fs-lg: 1.25rem;      /* 20px */
  --fs-xl: 1.5rem;       /* 24px */
  --fs-2xl: 2rem;        /* 32px */
  --fs-3xl: 2.5rem;      /* 40px */
  --fs-4xl: 3rem;        /* 48px */
  --fs-5xl: 3.75rem;     /* 60px */

  /* Spacing */
  --spacing-xs: 0.5rem;   /* 8px */
  --spacing-sm: 1rem;     /* 16px */
  --spacing-md: 1.5rem;   /* 24px */
  --spacing-lg: 2rem;     /* 32px */
  --spacing-xl: 3rem;     /* 48px */
  --spacing-2xl: 4rem;    /* 64px */
  --spacing-3xl: 6rem;    /* 96px */

  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 1rem;      /* 16px */
  --radius-xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;

  /* 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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 600ms ease-in-out;

  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-tooltip: 1070;
}

/* ===================================
   Reset & Base Styles
   =================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--neutral-darkest);
  background-color: #ffffff;
  overflow-x: hidden;
  width: 100%;
  min-height: 100vh;
  position: relative;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--primary-deep-blue);
}

h1 {
  font-size: var(--fs-4xl);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: var(--fs-3xl);
}

h3 {
  font-size: var(--fs-2xl);
}

h4 {
  font-size: var(--fs-xl);
}

h5 {
  font-size: var(--fs-lg);
}

h6 {
  font-size: var(--fs-base);
}

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

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

a:hover {
  color: var(--primary-teal);
}

strong, b {
  font-weight: 600;
}

/* ===================================
   Layout & Container
   =================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

.container-narrow {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Sections */
section {
  padding: var(--spacing-3xl) 0;
}

.section-sm {
  padding: var(--spacing-xl) 0;
}

.section-lg {
  padding: 4rem 0;
}

/* ===================================
   Grid System
   =================================== */

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

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

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

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.flex-wrap {
  flex-wrap: wrap;
}

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

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

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Text Colors */
.text-primary { color: var(--primary-deep-blue); }
.text-secondary { color: var(--primary-teal); }
.text-muted { color: var(--neutral-dark); }
.text-white { color: #ffffff; }

/* Background Colors */
.bg-primary { background-color: var(--primary-deep-blue); }
.bg-secondary { background-color: var(--primary-teal); }
.bg-light { background-color: var(--neutral-lightest); }
.bg-white { background-color: #ffffff; }

.bg-gradient-primary { background: var(--gradient-primary); }
.bg-gradient-accent { background: var(--gradient-accent); }

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* ===================================
   Images
   =================================== */

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

.img-cover {
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.img-contain {
  object-fit: contain;
}

.img-rounded {
  border-radius: var(--radius-lg);
}

.img-circle {
  border-radius: 50%;
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
  :root {
    --fs-4xl: 2.5rem;    /* 40px */
    --fs-3xl: 2rem;      /* 32px */
    --fs-2xl: 1.75rem;   /* 28px */
  }

  html, body {
    max-width: 100vw;
    overflow-x: hidden;
  }

  * {
    max-width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

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

  h1, h2, h3, h4, h5, h6, p {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
  }

  .container {
    padding: 0 var(--spacing-sm);
    max-width: 100%;
  }

  section {
    padding: var(--spacing-2xl) 0;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

/* Mobile (480px and below) */
@media (max-width: 480px) {
  :root {
    --fs-4xl: 2rem;      /* 32px */
    --fs-3xl: 1.75rem;   /* 28px */
    --fs-2xl: 1.5rem;    /* 24px */
  }

  section {
    padding: var(--spacing-xl) 0;
  }

  .grid-2.tablet-2 {
    grid-template-columns: 1fr;
  }
}

/* ===================================
   Accessibility
   =================================== */

/* Focus styles */
:focus {
  outline: 2px solid var(--primary-teal);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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