/* ==========================================================================
   Harwood Smiles 2.0 - Modern Design System
   2025-2026 Standards: CSS Custom Properties, Mobile-First, Accessible
   ========================================================================== */

/* ==========================================================================
   1. CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
  /* Colors - Primary Palette */
  --color-primary: #51be37;
  --color-primary-dark: #3d9b26;
  --color-primary-light: #6fd94f;
  --color-secondary: #4cabe5;
  --color-secondary-dark: #3891c9;
  --color-secondary-light: #6fbdeb;
  
  /* Colors - Neutrals */
  --color-dark: #2d2d2d;
  --color-gray-900: #2f3940;
  --color-gray-800: #3d5261;
  --color-gray-700: #6b7280;
  --color-gray-300: #d1d5db;
  --color-gray-100: #f3f4f6;
  --color-light: #ecf2f6;
  --color-white: #ffffff;
  --color-black: #000000;
  
  /* Colors - Functional */
  --color-success: #51be37;
  --color-warning: #ffbd07;
  --color-error: #dc2626;
  --color-info: #4cabe5;
  
  /* Typography - Font Families */
  --font-heading: "contralto-big", sans-serif;
  --font-body: "Poppins", sans-serif;
  --font-mono: "Monaco", "Courier New", monospace;
  
  /* Typography - Font Sizes (Fluid & Responsive) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.8rem + 2.25vw, 3rem);
  --text-5xl: clamp(3rem, 2.25rem + 3.75vw, 4rem);
  --text-6xl: clamp(3.75rem, 2.75rem + 5vw, 5rem);
  
  /* Typography - Line Heights */
  --leading-none: 1;
  --leading-tight: 1.1;
  --leading-snug: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.6;
  --leading-loose: 1.8;
  
  /* Typography - Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Spacing Scale (Mobile-First) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.5rem;   /* 24px */
  --space-6: 2rem;     /* 32px */
  --space-8: 3rem;     /* 48px */
  --space-10: 4rem;    /* 64px */
  --space-12: 6rem;    /* 96px */
  --space-16: 8rem;    /* 128px */
  
  /* Container Widths */
  --container-xs: 20rem;    /* 320px */
  --container-sm: 40rem;    /* 640px */
  --container-md: 48rem;    /* 768px */
  --container-lg: 64rem;    /* 1024px */
  --container-xl: 80rem;    /* 1280px */
  --container-2xl: 90rem;   /* 1440px */
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Z-Index Scale */
  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Breakpoints (for reference in media queries) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* ==========================================================================
   2. CSS Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-dark);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* ==========================================================================
   3. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-light);
  line-height: var(--leading-tight);
  color: var(--color-dark);
  margin-bottom: var(--space-4);
}

h1, .h1 {
  font-size: var(--text-5xl);
}

h2, .h2 {
  font-size: var(--text-4xl);
}

h3, .h3 {
  font-size: var(--text-3xl);
}

h4, .h4 {
  font-size: var(--text-2xl);
}

h5, .h5 {
  font-size: var(--text-xl);
}

h6, .h6 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

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

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

strong, b {
  font-weight: var(--font-bold);
}

em, i {
  font-style: italic;
}

/* ==========================================================================
   4. Layout Utilities
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-2xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

.section {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
}

/* ==========================================================================
   5. Button Styles
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: var(--leading-none);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 44px; /* WCAG touch target */
  min-width: 44px;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-primary {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn-secondary {
  color: var(--color-white);
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  color: var(--color-white);
}

.btn-outline {
  color: var(--color-primary);
  background-color: transparent;
  border-color: var(--color-primary);
}

.btn-outline:hover {
  color: var(--color-white);
  background-color: var(--color-primary);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* BEM Naming Aliases (for backward compatibility) */
.btn--primary {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn--secondary {
  color: var(--color-white);
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn--secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  color: var(--color-white);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* ==========================================================================
   6. Utility Classes
   ========================================================================== */

/* Display */
.hidden {
  display: none !important;
}

.block {
  display: block !important;
}

.flex {
  display: flex !important;
}

.inline-flex {
  display: inline-flex !important;
}

.grid {
  display: grid !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;
}

/* Skip Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  z-index: var(--z-tooltip);
}

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

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

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

.text-right {
  text-align: right;
}
/* ==========================================================================
   Accessibility: Focus States & Keyboard Navigation (WCAG 2.2 AA)
   ========================================================================== */

/* Global focus visible styles for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Remove default focus outline but keep outline for visible focus */
:focus {
  outline: none;
}

/* Button focus states */
.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(81, 190, 55, 0.1);
}

/* Link focus states */
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Form input focus states */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

/* Menu/navigation item focus */
nav a:focus-visible,
nav button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
  background-color: rgba(81, 190, 55, 0.1);
}

/* Skip Link (visually hidden, becomes visible on focus) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 8px 16px;
  text-decoration: none;
  z-index: 100;
  border-radius: 0 0 4px 0;
  font-weight: 600;
}

.skip-link:focus-visible {
  top: 0;
  outline: none;
}
.desk-max-w-600{
  position:relative;
  z-index:1;
}
/* Ensure :disabled buttons are visually distinct */
button:disabled,
input:disabled,
select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
/* Responsive Utilities */
@media (max-width: 767px) {
  .hidden-mobile {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .hidden-desktop {
    display: none !important;
  }
  .desk-max-w-600{
    max-width:600px;
  }
}