/* ==========================================================================
   INTELLIBRIDGE AI - GLOBAL TYPOGRAPHY, CONTAINERS & UTILITIES
   ========================================================================== */

body {
  font-family: var(--font-family);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Global Container System */
.container {
  width: min(1240px, calc(100% - 48px));
  margin-inline: auto;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-secondary);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.75rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-5);
}

h2 {
  font-size: clamp(2.1rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

h3 {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-3);
}

h4 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

p {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.65;
}

.eyebrow, .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
  border: 1px solid #D6E4F8;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-3);
}

/* 16:10 and 4:3 Image Helpers (object-fit: cover, rounded corners) */
.img-16-10 {
  aspect-ratio: 16 / 10;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-lg);
  display: block;
}

.img-4-3 {
  aspect-ratio: 4 / 3;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-md);
  display: block;
}

/* Section Spacing System & Alternating Background Rhythm */
.section {
  padding-block: var(--space-9);
  position: relative;
}

.section-white {
  background-color: #FFFFFF;
}

.section-soft {
  background-color: var(--color-background-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-subtle {
  background-color: var(--color-background-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-dark {
  background-color: var(--color-dark-bg);
  color: #FFFFFF;
}

.section-header {
  margin-bottom: var(--space-7);
}

.section-header.text-center {
  text-align: center;
  max-width: 780px;
  margin-inline: auto;
}

.section-header p {
  font-size: 1.125rem;
  max-width: 680px;
  margin-inline: auto;
}

/* Buttons System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.95rem;
  height: 48px;
  min-height: 48px;
  padding: 0 26px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  text-decoration: none;
}

.btn-lg {
  height: 52px;
  min-height: 52px;
  padding: 0 32px;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 10px rgba(11, 95, 217, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: 0 4px 16px rgba(11, 95, 217, 0.3);
  transform: translateY(-2px);
  color: var(--color-white);
}

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

.btn-secondary:hover {
  background-color: var(--color-background-soft);
  border-color: #CBD5E1;
  color: var(--color-primary);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background-color: var(--color-primary-subtle);
  transform: translateY(-1px);
}

.btn-secondary-dark,
.btn-outline-white {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-secondary-dark:hover,
.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.85);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

/* Defensive UI/UX safeguard: ensure high contrast when secondary buttons are placed inside dark containers */
[style*="var(--color-dark-bg)"] .btn-secondary,
[style*="color:var(--color-white)"] .btn-secondary {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-white) !important;
  border-color: rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

[style*="var(--color-dark-bg)"] .btn-secondary:hover,
[style*="color:var(--color-white)"] .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.85);
  color: var(--color-white) !important;
  transform: translateY(-2px);
}

.btn-link {
  color: var(--color-primary);
  font-weight: 600;
  padding: 0;
  height: auto;
  min-height: auto;
  background: transparent;
  border: none;
}

.btn-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}