/* ==========================================================================
  Design System v2 - 1.21 Initiative
  ========================================================================== */

/* ==========================================================================
  1. Base Styles & Variables
  ========================================================================== */

:root {
  /* ========== Color Palette ========== */
  /* Primary Colors - Updated to a more neutral blue-gray */
  --color-primary-50: #f8fafc;
  --color-primary-100: #f1f5f9;
  --color-primary-200: #e2e8f0;
  --color-primary-300: #cbd5e1;
  --color-primary-400: #94a3b8;
  --color-primary-500: #64748b;
  --color-primary-600: #475569;
  --color-primary-700: #334155;
  --color-primary-800: #1e293b;
  --color-primary-900: #0f172a;
  --color-primary-950: #020617;

  /* Secondary Colors - Muted teal for accents */
  --color-secondary-50: #f0fdfa;
  --color-secondary-100: #ccfbf1;
  --color-secondary-200: #99f6e4;
  --color-secondary-300: #5eead4;
  --color-secondary-400: #2dd4bf;
  --color-secondary-500: #14b8a6;
  --color-secondary-600: #0d9488;
  --color-secondary-700: #0f766e;
  --color-secondary-800: #115e59;
  --color-secondary-900: #134e4a;
  --color-secondary-950: #042f2e;

  /* Accent Colors - Subdued gold for highlights */
  --color-accent-50: #fefce8;
  --color-accent-100: #fef9c3;
  --color-accent-200: #fef08a;
  --color-accent-300: #fde047;
  --color-accent-400: #facc15;
  --color-accent-500: #eab308;
  --color-accent-600: #ca8a04;
  --color-accent-700: #a16207;
  --color-accent-800: #854d0e;
  --color-accent-900: #713f12;
  --color-accent-950: #422006;

  /* Neutral Colors */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-gray-950: #030712;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* Background Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-inverse: #0f172a;

  /* Text Colors */
  --color-text-primary: #1e293b; /* Slightly softer black */
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748b;
  --color-text-inverse: #ffffff;
  --color-text-muted: #94a3b8;
  --color-text-link: #2563eb;
  --color-text-link-hover: #1d4ed8;

  /* Border Colors */
  --color-border-light: #e2e8f0;
  --color-border-medium: #cbd5e1;
  --color-border-dark: #94a3b8;
  --color-border-accent: #2563eb;

  /* ========== Typography ========== */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Roboto Mono', 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  --font-display: 'Calibre', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0em;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* ========== Spacing ========== */
  --spacing-px: 1px;
  --spacing-0: 0;
  --spacing-0_5: 0.125rem;  /* 2px */
  --spacing-1: 0.25rem;     /* 4px */
  --spacing-1_5: 0.375rem;  /* 6px */
  --spacing-2: 0.5rem;      /* 8px */
  --spacing-2_5: 0.625rem;  /* 10px */
  --spacing-3: 0.75rem;     /* 12px */
  --spacing-3_5: 0.875rem;  /* 14px */
  --spacing-4: 1rem;        /* 16px */
  --spacing-5: 1.25rem;     /* 20px */
  --spacing-6: 1.5rem;      /* 24px */
  --spacing-7: 1.75rem;     /* 28px */
  --spacing-8: 2rem;        /* 32px */
  --spacing-9: 2.25rem;     /* 36px */
  --spacing-10: 2.5rem;     /* 40px */
  --spacing-11: 2.75rem;    /* 44px */
  --spacing-12: 3rem;       /* 48px */
  --spacing-14: 3.5rem;     /* 56px */
  --spacing-16: 4rem;       /* 64px */
  --spacing-20: 5rem;       /* 80px */
  --spacing-24: 6rem;       /* 96px */
  --spacing-28: 7rem;       /* 112px */
  --spacing-32: 8rem;       /* 128px */
  --spacing-36: 9rem;       /* 144px */
  --spacing-40: 10rem;      /* 160px */
  --spacing-44: 11rem;      /* 176px */
  --spacing-48: 12rem;      /* 192px */
  --spacing-52: 13rem;      /* 208px */
  --spacing-56: 14rem;      /* 224px */
  --spacing-60: 15rem;      /* 240px */
  --spacing-64: 16rem;      /* 256px */
  --spacing-72: 18rem;      /* 288px */
  --spacing-80: 20rem;      /* 320px */
  --spacing-96: 24rem;      /* 384px */

  /* ========== Border Radius ========== */
  --radius-none: 0;
  --radius-sm: 0.125rem;    /* 2px */
  --radius: 0.25rem;        /* 4px */
  --radius-md: 0.375rem;    /* 6px */
  --radius-lg: 0.5rem;      /* 8px */
  --radius-xl: 0.75rem;     /* 12px */
  --radius-2xl: 1rem;       /* 16px */
  --radius-3xl: 1.5rem;     /* 24px */
  --radius-full: 9999px;

  /* ========== Box Shadow ========== */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-outline: 0 0 0 3px rgba(66, 153, 225, 0.5);
  --shadow-none: none;

  /* ========== Z-Index ========== */
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-auto: auto;

  /* ========== Transitions ========== */
  --transition-none: none;
  --transition-all: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  --transition-colors: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
  --transition-opacity: opacity 0.15s ease-in-out;
  --transition-shadow: box-shadow 0.15s ease-in-out;
  --transition-transform: transform 0.15s ease-in-out;
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slowest: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-theme: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  /* ========== Breakpoints ========== */
  --breakpoint-xs: 30rem;   /* 480px */
  --breakpoint-sm: 40rem;   /* 640px */
  --breakpoint-md: 48rem;   /* 768px */
  --breakpoint-lg: 64rem;   /* 1024px */
  --breakpoint-xl: 80rem;   /* 1280px */
  --breakpoint-2xl: 96rem;  /* 1536px */

  /* ========== Container Widths ========== */
  --container-sm: 40rem;    /* 640px */
  --container-md: 48rem;    /* 768px */
  --container-lg: 64rem;    /* 1024px */
  --container-xl: 80rem;    /* 1280px */
  --container-2xl: 96rem;   /* 1536px */
  --container-full: 100%;

  /* ========== Grid Gutter ========== */
  --grid-gutter: 1.5rem;    /* 24px */
  --grid-gap: 1.5rem;       /* 24px */

  /* ========== Layout ========== */
  --header-height: 4rem;    /* 64px */
  --footer-height: 4rem;    /* 64px */
  --max-content-width: 90rem; /* 1440px */
  --content-padding: 1.5rem; /* 24px */
  --section-padding: 5rem;  /* 80px */
  --section-padding-lg: 7.5rem; /* 120px */
  --section-padding-xl: 10rem; /* 160px */

  /* ========== Components ========== */
  --button-padding-y: 0.625rem; /* 10px */
  --button-padding-x: 1.5rem;   /* 24px */
  --button-border-radius: var(--radius-md);
  --button-font-weight: var(--font-weight-semibold);
  --button-font-size: 1rem;     /* 16px */
  --button-line-height: 1.5rem; /* 24px */
  --button-focus-ring-offset: 2px;
  --button-focus-ring-width: 2px;
  --button-focus-ring-color: var(--color-primary-500);
  --button-transition: var(--transition-colors);

  --input-padding-y: 0.5rem;   /* 8px */
  --input-padding-x: 0.75rem;  /* 12px */
  --input-border-radius: var(--radius);
  --input-border-width: 1px;
  --input-line-height: 1.5rem; /* 24px */
  --input-focus-ring-offset: 0px;
  --input-focus-ring-width: 2px;
  --input-focus-ring-color: var(--color-primary-500);
  --input-transition: var(--transition-colors);

  --card-padding: 1.5rem;      /* 24px */
  --card-border-radius: var(--radius-lg);
  --card-box-shadow: var(--shadow-sm);
  --card-bg: var(--color-bg-primary);
  --card-border: 1px solid var(--color-border-light);
  --card-transition: var(--transition-shadow), var(--transition-transform);

  --badge-padding-y: 0.25rem;  /* 4px */
  --badge-padding-x: 0.5rem;   /* 8px */
  --badge-border-radius: var(--radius-full);
  --badge-font-size: 0.75rem;  /* 12px */
  --badge-font-weight: var(--font-weight-medium);
  --badge-line-height: 1rem;   /* 16px */
  --badge-letter-spacing: var(--tracking-wider);
  --badge-text-transform: uppercase;

  --alert-padding-y: 0.75rem;  /* 12px */
  --alert-padding-x: 1rem;     /* 16px */
  --alert-border-radius: var(--radius);
  --alert-border-width: 1px;
  --alert-icon-margin: 0.75rem; /* 12px */
  --alert-title-font-size: 1rem; /* 16px */
  --alert-title-font-weight: var(--font-weight-semibold);
  --alert-description-margin-top: 0.5rem; /* 8px */
  --alert-description-font-size: 0.875rem; /* 14px */
  --alert-description-line-height: 1.25rem; /* 20px */
}

/* ==========================================================================
  2. Base Layout & Spacing
  ========================================================================== */

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Section Spacing */
section {
  padding: 5rem 0;
  position: relative;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 2.5rem;
  text-align: center;
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--color-accent-500);
  border-radius: 2px;
}

/* Grid System */
.grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Card Component */
.card {
  background: var(--color-bg-primary);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;
}

.card__text {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  flex: 1;
}

/* ==========================================================================
  3. Base Styles
  ========================================================================== */

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-family: var(--font-sans);
  line-height: var(--line-height-normal);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
  font-size: 16px; /* Base font size */
}

body {
  margin: 0;
  padding: 0;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: var(--line-height-normal);
  font-weight: var(--font-weight-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--spacing-4) 0;
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: 3.5rem; /* 56px */
  line-height: 1;
  letter-spacing: -0.025em;
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: 2.25rem; /* 36px */
  letter-spacing: -0.02em;
  font-weight: var(--font-weight-semibold);
}

h3 {
  font-size: 1.875rem; /* 30px */
  letter-spacing: -0.015em;
  font-weight: var(--font-weight-semibold);
}

h4 {
  font-size: 1.5rem; /* 24px */
  letter-spacing: -0.01em;
  font-weight: var(--font-weight-semibold);
}

h5 {
  font-size: 1.25rem; /* 20px */
  font-weight: var(--font-weight-semibold);
}

h6 {
  font-size: 1rem; /* 16px */
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

p {
  margin: 0 0 var(--spacing-4) 0;
  font-size: 1rem;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-text-link);
  text-decoration: none;
  transition: var(--transition-colors);
  cursor: pointer;
}

a:hover {
  color: var(--color-text-link-hover);
  text-decoration: underline;
}

/* Lists */
ul, ol {
  margin: 0 0 var(--spacing-4) 0;
  padding-left: var(--spacing-6);
}

ul {
  list-style-type: disc;
}

ol {
  list-style-type: decimal;
}

li {
  margin-bottom: var(--spacing-2);
  line-height: var(--line-height-relaxed);
}

/* Images */
img, svg, video, canvas, audio, iframe, embed, object {
  display: block;
  max-width: 100%;
  height: auto;
}

img {
  border-style: none;
}

/* Forms */
button, input, optgroup, select, textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: inherit;
  margin: 0;
  padding: 0;
  color: inherit;
  background-color: transparent;
}

button, [type='button'], [type='reset'], [type='submit'] {
  appearance: button;
  -webkit-appearance: button;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

button:disabled, [type='button']:disabled, [type='reset']:disabled, [type='submit']:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

/* Accessibility */
.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;
}

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

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section--lg {
  padding: var(--section-padding-lg) 0;
}

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

/* Grid System */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
  width: 100%;
}

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

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

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

.justify-between {
  justify-content: space-between;
}

/* Text Utilities */
.text-center {
  text-align: center;
}

.text-uppercase {
  text-transform: uppercase;
}

/* Spacing Utilities */
.mb-4 {
  margin-bottom: var(--spacing-4);
}

.mb-8 {
  margin-bottom: var(--spacing-8);
}

.mb-12 {
  margin-bottom: var(--spacing-12);
}

/* Responsive Utilities */
@media (min-width: 48rem) {
  .md\:flex {
    display: flex;
  }
  
  .md\:hidden {
    display: none;
  }
}

/* ==========================================================================
  3. Components
  ========================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--button-padding-y) var(--button-padding-x);
  border-radius: var(--button-border-radius);
  font-weight: var(--button-font-weight);
  font-size: var(--button-font-size);
  line-height: var(--button-line-height);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  transition: var(--button-transition);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: 0 0 0 3px var(--button-focus-ring-color);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Button Variants */
.btn--primary {
  background-color: var(--color-primary-600);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background-color: var(--color-primary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn--primary:active {
  background-color: var(--color-primary-800);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn--secondary {
  background-color: var(--color-secondary-600);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn--secondary:hover {
  background-color: var(--color-secondary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary-600);
  border: 1px solid var(--color-primary-600);
}

.btn--outline:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary-700);
  color: var(--color-primary-700);
}

/* Card Component */
.card {
  background: var(--card-bg);
  border-radius: var(--card-border-radius);
  box-shadow: var(--card-box-shadow);
  border: var(--card-border);
  overflow: hidden;
  transition: var(--card-transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__content {
  padding: var(--card-padding);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-2);
  color: var(--color-text-primary);
}

.card__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-4);
  flex: 1;
}

.card__footer {
  margin-top: auto;
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 var(--content-padding);
  background-color: var(--color-bg-primary);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  position: relative;
  z-index: 50;
}

.nav__brand {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.nav__menu {
  display: none;
  margin-left: auto;
}

.nav__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-6);
}

.nav__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-2) 0;
  position: relative;
  transition: var(--transition-colors);
}

.nav__link:hover {
  color: var(--color-primary-600);
}

.nav__link--active {
  color: var(--color-primary-600);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary-600);
  border-radius: var(--radius-full);
}

.nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-text-primary);
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
  border-radius: var(--radius);
  transition: var(--transition-colors);
}

.nav__toggle:hover {
  background-color: var(--color-gray-100);
}

.nav__toggle:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-primary-100);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg-primary);
  z-index: 40;
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
  overflow-y: auto;
  padding: var(--spacing-6) var(--content-padding);
}

.mobile-menu--open {
  transform: translateX(0);
}

.mobile-menu__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-menu__item {
  border-bottom: 1px solid var(--color-border-light);
}

.mobile-menu__link {
  display: block;
  padding: var(--spacing-4) 0;
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: var(--transition-colors);
}

.mobile-menu__link:hover {
  color: var(--color-primary-600);
}

/* Hero Section */
.hero {
  position: relative;
  padding: var(--spacing-20) 0;
  background: linear-gradient(135deg, var(--color-primary-900), var(--color-primary-700));
  color: white;
  overflow: hidden;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--content-padding);
}

.hero__title {
  font-size: 3.5rem;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  margin-bottom: var(--spacing-6);
  letter-spacing: -0.025em;
}

.hero__subtitle {
  font-size: 1.25rem;
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-8);
  color: var(--color-gray-200);
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-4);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  opacity: 0.1;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='1' fill-rule='evenodd'/%3E%3C/svg%3E");
}

/* Features Section */
.features {
  padding: var(--section-padding) 0;
  background-color: var(--color-bg-secondary);
}

.features__header {
  text-align: center;
  max-width: 48rem;
  margin: 0 auto var(--spacing-12) auto;
  padding: 0 var(--content-padding);
}

.features__title {
  margin-bottom: var(--spacing-4);
}

.features__subtitle {
  color: var(--color-text-secondary);
  font-size: 1.25rem;
  line-height: var(--line-height-relaxed);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-8);
  padding: 0 var(--content-padding);
  max-width: var(--max-content-width);
  margin: 0 auto;
}

.feature-card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8) var(--spacing-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-50);
  color: var(--color-primary-600);
  margin-bottom: var(--spacing-4);
  font-size: 1.5rem;
}

.feature-card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-3);
  color: var(--color-text-primary);
}

.feature-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Testimonial Section */
.testimonial-section {
  padding: var(--section-padding) 0;
  background: linear-gradient(135deg, var(--color-primary-900), var(--color-primary-700));
  color: white;
  position: relative;
  overflow: hidden;
}

.testimonial-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
  opacity: 0.1;
  z-index: 1;
}

.testimonial__container {
  position: relative;
  z-index: 2;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 var(--content-padding);
}

.testimonial__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.testimonial__title {
  color: white;
  margin-bottom: var(--spacing-2);
}

.testimonial__subtitle {
  color: var(--color-gray-200);
  font-size: 1.25rem;
  max-width: 48rem;
  margin: 0 auto;
}

.testimonial__slider {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.testimonial__track {
  display: flex;
  transition: transform 0.5s ease-in-out;
  width: 100%;
}

.testimonial {
  flex: 0 0 100%;
  padding: 0 var(--spacing-4);
  box-sizing: border-box;
}

.testimonial__content {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8) var(--spacing-8) var(--spacing-12) var(--spacing-8);
  position: relative;
  color: white;
  font-style: italic;
  line-height: var(--line-height-relaxed);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-8);
}

.testimonial__content::before {
  content: '\201C';
  position: absolute;
  top: 0;
  left: var(--spacing-6);
  font-size: 8rem;
  line-height: 1;
  color: rgba(255, 255, 255, 0.2);
  font-family: Georgia, serif;
}

.testimonial__author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4);
}

.testimonial__avatar {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid white;
  box-shadow: var(--shadow-md);
}

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

.testimonial__name {
  font-weight: var(--font-weight-semibold);
  color: white;
  margin-bottom: 0.25rem;
}

.testimonial__title {
  font-size: 0.875rem;
  color: var(--color-gray-200);
  margin: 0;
}

.testimonial__nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.testimonial__dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.3);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: var(--transition);
}

.testimonial__dot--active {
  background-color: white;
  transform: scale(1.2);
}

/* CTA Section */
.cta {
  padding: var(--section-padding) 0;
  background-color: var(--color-bg-tertiary);
  text-align: center;
}

.cta__container {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0 var(--content-padding);
}

.cta__title {
  margin-bottom: var(--spacing-4);
}

.cta__description {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-8);
}

.cta__form {
  display: flex;
  max-width: 32rem;
  margin: 0 auto;
  gap: var(--spacing-4);
}

.cta__input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius);
  font-size: 1rem;
  line-height: 1.5;
  transition: var(--transition);
}

.cta__input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.cta__button {
  padding: 0.75rem 1.5rem;
  background-color: var(--color-primary-600);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition);
}

.cta__button:hover {
  background-color: var(--color-primary-700);
  transform: translateY(-1px);
}

.cta__button:active {
  transform: translateY(0);
}

/* Footer */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-12) 0 var(--spacing-8) 0;
}

.footer__container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-12);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.footer__logo {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: white;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
}

.footer__description {
  color: var(--color-gray-400);
  line-height: var(--line-height-relaxed);
  max-width: 24rem;
}

.footer__social {
  display: flex;
  gap: var(--spacing-4);
  margin-top: var(--spacing-4);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--color-gray-800);
  color: var(--color-gray-300);
  transition: var(--transition);
}

.footer__social-link:hover {
  background-color: var(--color-gray-700);
  color: white;
  transform: translateY(-2px);
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-8);
}

.footer__links-title {
  color: white;
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer__link {
  color: var(--color-gray-400);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.9375rem;
}

.footer__link:hover {
  color: white;
  text-decoration: none;
}

.footer__bottom {
  margin-top: var(--spacing-12);
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-gray-800);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  align-items: center;
  justify-content: space-between;
}

.footer__copyright {
  color: var(--color-gray-500);
  font-size: 0.875rem;
  text-align: center;
}

.footer__legal {
  display: flex;
  gap: var(--spacing-6);
  flex-wrap: wrap;
  justify-content: center;
}

.footer__legal-link {
  color: var(--color-gray-500);
  text-decoration: none;
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer__legal-link:hover {
  color: var(--color-gray-300);
  text-decoration: underline;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: var(--color-primary-600);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
  box-shadow: var(--shadow-md);
  border: none;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-primary-700);
  transform: translateY(-2px);
}

/* ==========================================================================
  4. Utility Classes
  ========================================================================== */

/* Text Colors */
.text-primary {
  color: var(--color-text-primary);
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-white {
  color: white;
}

/* Background Colors */
.bg-primary {
  background-color: var(--color-bg-primary);
}

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

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

/* Spacing */
.py-8 {
  padding-top: var(--spacing-8);
  padding-bottom: var(--spacing-8);
}

.py-12 {
  padding-top: var(--spacing-12);
  padding-bottom: var(--spacing-12);
}

.py-16 {
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-16);
}

/* Flex & Grid */
.flex {
  display: flex;
}

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

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

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

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

.gap-4 {
  gap: var(--spacing-4);
}

.gap-6 {
  gap: var(--spacing-6);
}

.gap-8 {
  gap: var(--spacing-8);
}

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

/* Width & Max-Width */
.w-full {
  width: 100%;
}

.max-w-2xl {
  max-width: 42rem;
}

.max-w-3xl {
  max-width: 48rem;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
  5. Animations
  ========================================================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* ==========================================================================
  6. Responsive Styles
  ========================================================================== */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 36em) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__container {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 48em) {
  .nav__menu {
    display: block;
  }
  
  .nav__toggle {
    display: none;
  }
  
  .mobile-menu {
    display: none;
  }
  
  .testimonial {
    padding: 0 var(--spacing-8);
  }
  
  .footer__container {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 62em) {
  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .testimonial {
    padding: 0 var(--spacing-12);
  }
  
  .testimonial__content {
    padding: var(--spacing-12) var(--spacing-12) var(--spacing-16) var(--spacing-12);
  }
  
  .footer__container {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 75em) {
  .container {
    padding: 0 var(--spacing-8);
  }
  
  .hero__content {
    padding: 0;
  }
  
  .features__grid {
    padding: 0;
  }
  
  .testimonial__container {
    padding: 0;
  }
  
  .cta__container {
    padding: 0;
  }
  
  .footer__container {
    padding: 0;
  }
}

/* Print styles */
@media print {
  .no-print {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.3;
    color: #000;
    background: none;
  }
  
  a {
    text-decoration: underline;
    color: #000;
  }
  
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    font-weight: normal;
  }
  
  .container {
    width: auto;
    margin: 0;
    padding: 0;
  }
  
  .section {
    padding: 1cm 0;
    page-break-inside: avoid;
  }
  
  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
    page-break-inside: avoid;
  }
  
  img {
    max-width: 100% !important;
    page-break-inside: avoid;
  }
  
  @page {
    margin: 2cm;
  }
}