/* Vizuni Design System - CSS Custom Properties */
/* Based on .github/vizuni-hero-visual-identity.md specification */

/* @font-face declarations for locally hosted Manrope font */
@font-face {
  font-family: 'Manrope';
  src: url('/fonts/Manrope-ExtraLight.woff2') format('woff2');
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('/fonts/Manrope-Light.woff2') format('woff2');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('/fonts/Manrope-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('/fonts/Manrope-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('/fonts/Manrope-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('/fonts/Manrope-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('/fonts/Manrope-ExtraBold.woff2') format('woff2');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Colors - Primary Palette */
  --color-primary-900: #1A237E;
  --color-primary-700: #303F9F;
  --color-primary-500: #5B79BA;
  --color-primary-300: #7986CB;
  --color-primary-100: #C5CAE9;
  --color-primary-50: #E8EAF6;

  /* Colors - Grayscale */
  --color-gray-900: #212121;
  --color-gray-700: #424242;
  --color-gray-400: #BDBDBD;
  --color-gray-100: #F5F5F5;
  --color-gray-50: #FAFAFA;
  --color-white: #FFFFFF;

  /* Colors - Semantic */
  --color-success: #4CAF50;
  --color-warning: #FF9800;
  --color-error: #F44336;

  /* Typography */
  --font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-h1: 3.5rem;
  --font-size-h2: 1.25rem;
  --font-size-h3: 2rem;
  --font-size-feature-title: 1.125rem;
  --font-size-body: 1rem;
  --font-size-cta: 1.125rem;
  --font-size-small: 0.875rem;
  --line-height-tight: 1.15;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --letter-spacing-tight: -0.02em;
  --letter-spacing-slight: -0.01em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.01em;

  /* Spacing */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-16: 128px;
  --space-20: 160px;

  /* Layout */
  --container-max-width: 1280px;
  --container-padding-x: var(--space-4);
  --header-height: 72px;

  /* Border Radius */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-button: 0 2px 8px rgba(27, 35, 126, 0.15);
  --shadow-button-hover: 0 4px 12px rgba(27, 35, 126, 0.25);

  /* Transitions */
  --transition-instant: 100ms ease;
  --transition-fast: 200ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #5B79BA 0%, #303F9F 100%);
}

/* Responsive Typography */
@media (max-width: 767px) {
  :root {
    --font-size-h1: 2.5rem;
    --font-size-h2: 1.125rem;
    --font-size-h3: 1.5rem;
    --container-padding-x: var(--space-3);
  }
}

@media (min-width: 768px) and (max-width: 1439px) {
  :root {
    --font-size-h1: 3rem;
    --font-size-h3: 1.75rem;
  }
}

@media (min-width: 1440px) {
  :root {
    --container-padding-x: var(--space-6);
  }
}

/* Base Styles */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-900);
  background-color: var(--color-gray-50);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Base Styles */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
}

h1 {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-primary-900);
}

h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-light);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
}

h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-slight);
  color: var(--color-primary-900);
}

p {
  margin: 0;
  line-height: var(--line-height-relaxed);
}

/* Focus States for Accessibility */
*:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
  border-radius: inherit;
}

/* Buttons - Global Definition */
.btn-primary {
    background-color: var(--color-primary-500);
    color: var(--color-white);
    font-size: var(--font-size-cta);
    font-weight: var(--font-weight-medium);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-button);
    letter-spacing: var(--letter-spacing-wide);
}

.btn-primary:hover {
    background-color: var(--color-primary-700);
    box-shadow: var(--shadow-button-hover);
    transform: translateY(-2px);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 4px;
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary-700);
    font-size: var(--font-size-cta);
    font-weight: var(--font-weight-medium);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--color-primary-300);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background-color: var(--color-primary-50);
    border-color: var(--color-primary-500);
    transform: translateY(-2px);
}

.btn-secondary:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 4px;
}

.btn-secondary:active {
    transform: translateY(-1px);
}

.btn-header-secondary {
    background-color: transparent;
    color: var(--color-primary-700);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-primary-300);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-header-secondary:hover {
    background-color: var(--color-primary-50);
    border-color: var(--color-primary-500);
    transform: translateY(-1px);
}

.btn-header-secondary:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

.btn-header-secondary:active {
    transform: translateY(0);
}

/* Container Utility */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding-left: var(--container-padding-x);
  padding-right: var(--container-padding-x);
}