/* Modern CSS Reset & Baseline */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  color-scheme: dark;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Link for Keyboard Accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-accent-blue);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  z-index: 9999;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--color-accent-cyan);
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 3px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Section Wrapper */
.section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  position: relative;
}

.section--alt {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid rgba(56, 189, 248, 0.08);
  border-bottom: 1px solid rgba(56, 189, 248, 0.08);
}

/* Section Header Typography */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto clamp(2.5rem, 5vw, 4rem) auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--color-accent-cyan);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent-cyan);
  box-shadow: 0 0 8px var(--color-accent-cyan);
}

.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.875rem 1.625rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, #2563eb, #0284c7);
  color: #ffffff;
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

.btn--primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #0369a1);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.45);
  transform: translateY(-2px);
}

.btn--outline {
  background: rgba(15, 23, 42, 0.6);
  color: var(--color-text-primary);
  border: 1px solid rgba(56, 189, 248, 0.3);
  backdrop-filter: blur(8px);
}

.btn--outline:hover {
  background: rgba(56, 189, 248, 0.12);
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  transform: translateY(-2px);
}

.btn--call {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
  letter-spacing: 0.02em;
}

.btn--call:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  box-shadow: 0 6px 22px rgba(56, 189, 248, 0.5);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.55rem 1rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: 1.0625rem;
}

.btn--block {
  width: 100%;
}

/* Subtle glow badge */
.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: #f87171;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.badge-live__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 8px #ef4444;
  animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

/* Icon utilities */
.icon {
  width: 1.25em;
  height: 1.25em;
  fill: currentColor;
  display: inline-block;
  vertical-align: middle;
}