/* ============================================
   Aashray SNR - Main Stylesheet
   Modern Design System with CSS Variables
   ============================================ */

/* CSS Variables - Design System */
:root {
  /* Colors */
  --color-primary: #0d7377;
  --color-primary-dark: #0a5a5e;
  --color-primary-light: #14a085;
  --color-secondary: #ff6b6b;
  --color-secondary-dark: #ee5a6f;
  --color-accent: #4ecdc4;
  --color-success: #51cf66;
  --color-warning: #ffd43b;
  --color-error: #ff6b6b;
  
  /* Neutral Colors */
  --color-text: #1a1a1a;
  --color-text-light: #4a4a4a;
  --color-text-muted: #6c757d;
  --color-bg: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-bg-dark: #1a1a1a;
  --color-border: #e0e0e0;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Poppins', var(--font-primary);
  
  /* Font Sizes - Fluid Typography */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1rem + 0.625vw, 1.5rem);
  --font-size-xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --font-size-2xl: clamp(2rem, 1.7rem + 1.5vw, 3rem);
  --font-size-3xl: clamp(2.5rem, 2rem + 2.5vw, 4rem);
  
  /* Spacing */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;     /* 8px */
  --spacing-md: 1rem;       /* 16px */
  --spacing-lg: 1.5rem;     /* 24px */
  --spacing-xl: 2rem;       /* 32px */
  --spacing-2xl: 3rem;      /* 48px */
  --spacing-3xl: 4rem;      /* 64px */
  --spacing-4xl: 6rem;      /* 96px */
  
  /* Layout */
  --container-width: 1400px;
  --container-padding: var(--spacing-lg);
  --section-padding: var(--spacing-4xl) var(--spacing-md);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --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);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --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;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

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

h4 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

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

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

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Section */
.section {
  padding: var(--section-padding);
}

.section--light {
  background-color: var(--color-bg-light);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.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;
}

/* Skip to main content */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  z-index: var(--z-tooltip);
}

.skip-link:focus {
  top: 0;
}

/* Responsive Images */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity var(--transition-base);
}

img[loading="lazy"].loaded {
  opacity: 1;
}

/* Print Styles */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  a,
  a:visited {
    text-decoration: underline;
  }
  
  pre,
  blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }
  
  thead {
    display: table-header-group;
  }
  
  tr,
  img {
    page-break-inside: avoid;
  }
  
  img {
    max-width: 100% !important;
  }
  
  p,
  h2,
  h3 {
    orphans: 3;
    widows: 3;
  }
  
  h2,
  h3 {
    page-break-after: avoid;
  }
}