/* 
  Global Design System 
  Includes Variables, Base CSS, and Utility Classes
*/

:root {
  /* Colors */
  --color-primary: #01183B;
  --color-secondary: #00C5FF;
  --color-accent: #FF4A00; /* Filled missing accent */
  --color-text: #1A202C;
  --color-text-muted: #FFFFFF; /* As requested, though typically grey */
  --color-text-inverse: #FFFFFF;
  --color-bg: #F5F6F8;
  --color-bg-alt: #FFFFFF; /* Filled missing bg alt */
  --color-bg-dark: #01183B;
  --color-border: #E0E0E1;
  --color-border-strong: #CBD5E1;
  --color-white: #FFFFFF;
  --color-black: #000000;

  /* Typography */
  --font-primary: 'Assistant', sans-serif;
  --font-secondary: 'Assistant', sans-serif;

  --fs-h1: clamp(2.5rem, 5vw, 4rem);
  --fs-h2: clamp(2rem, 4vw, 3rem);
  --fs-h3: clamp(1.5rem, 3vw, 2.25rem);
  --fs-lead: clamp(1.125rem, 2vw, 1.25rem);
  --fs-body: clamp(1rem, 1.5vw, 1.125rem); /* min 16px */
  --fs-small: 0.875rem;
  --fs-caption: 0.75rem;

  --lh-heading: 1.2;
  --lh-body: 1.6;
  --lh-relaxed: 1.8;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-bold: 700;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;

  /* Layout */
  --container-width: 1280px;
  --container-narrow-width: 800px; /* Filled missing narrow width */

  /* Border Radius */
  --radius-md: 24px;
  --radius-lg: 30px;
  --radius-xl: 40px;

  /* Shadows */
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

/* ==================== 
   BASE INHERITANCE
==================== */
html, body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: var(--lh-body);
  font-size: var(--fs-body);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  line-height: var(--lh-heading);
  margin-top: 0;
  margin-bottom: var(--space-sm);
}

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

/* ==================== 
   LAYOUT & CONTAINERS 
==================== */
.section {
  padding-block: var(--space-lg);
}
.section-sm {
  padding-block: var(--space-md);
}
.section-lg {
  padding-block: calc(var(--space-lg) * 1.5);
}
.section-hero {
  padding-block: calc(var(--space-lg) * 2) var(--space-lg);
  display: flex;
  align-items: center;
}
.section-alt {
  background-color: var(--color-bg-alt);
}
.section-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.container, 
.container-narrow, 
.container-full {
  width: 100%;
  margin-inline: auto;
  padding-inline: 1.5rem; /* Mobile padding */
}
.container {
  max-width: var(--container-width);
}
.container-narrow {
  max-width: var(--container-narrow-width);
}
.container-full {
  max-width: 100%;
}

/* ==================== 
   FLEX & GRID 
==================== */
.flex-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.flex-row {
  display: flex;
  flex-direction: row;
  gap: var(--space-sm);
  align-items: center;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.layout-stack > * + * {
  margin-top: var(--space-md);
}

/* ==================== 
   TYPOGRAPHY 
==================== */
.text-h1 { font-size: var(--fs-h1); font-weight: var(--fw-bold); line-height: var(--lh-heading); }
.text-h2 { font-size: var(--fs-h2); font-weight: var(--fw-bold); line-height: var(--lh-heading); }
.text-h3 { font-size: var(--fs-h3); font-weight: var(--fw-bold); line-height: var(--lh-heading); }
.text-lead { font-size: var(--fs-lead); font-weight: var(--fw-medium); }
.text-body { font-size: var(--fs-body); }
.text-small { font-size: var(--fs-small); }
.text-caption { font-size: var(--fs-caption); }
.text-center { text-align: center; }

/* ==================== 
   BUTTONS 
==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-weight: var(--fw-medium);
  font-size: var(--fs-body);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
}

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

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

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--fs-lead);
  border-radius: var(--radius-lg);
}
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--fs-small);
}

/* ==================== 
   CARDS 
==================== */
.card {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-soft);
  transition: box-shadow var(--transition-base);
  border: 1px solid var(--color-border);
}
.card:hover {
  box-shadow: var(--shadow-card);
}

.card-feature {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
}
.card-form {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}
.card-testimonial {
  background-color: var(--color-bg);
  border: none;
}

/* ==================== 
   UTILITIES 
==================== */
@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
}