/* ===================================================================
   CurcuVance BioSciences - Base Styles & Reset
   =================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Global Sleek Custom Scrollbar */
::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 9999px;
  border: 2px solid #f1f5f9;
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: #10b981;
}

body {
  font-family: var(--font-body);
  color: var(--neutral-800);
  background-color: var(--neutral-50);
  line-height: 1.65;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--neutral-900);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 4vw + 1rem, 3.75rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.85rem, 2.5vw + 1rem, 2.75rem);
}

h3 {
  font-size: clamp(1.35rem, 1.5vw + 0.75rem, 1.75rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
}

p.lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--neutral-700);
}

a {
  color: var(--primary-700);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

/* Sections */
.section {
  padding: var(--spacing-4xl) 0;
  position: relative;
}

.section-sm {
  padding: var(--spacing-2xl) 0;
}

.section-bg-white {
  background-color: #ffffff;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.section-bg-tint {
  background-color: #f8fafc;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.section-bg-warm-tint {
  background: linear-gradient(180deg, #faf7f2 0%, #f4efe6 100%);
  border-top: 1px solid #ede5d8;
  border-bottom: 1px solid #ede5d8;
}

.section-bg-slate-tint {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.section-bg-dark {
  background: linear-gradient(135deg, #092c23 0%, #051914 100%);
  color: var(--neutral-100);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.section-bg-dark h2,
.section-bg-dark h3,
.section-bg-dark h4 {
  color: var(--white);
}

.section-bg-dark .lead,
.section-bg-dark p {
  color: var(--neutral-300);
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--spacing-3xl);
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-700);
  background: var(--primary-100);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.section-bg-dark .section-kicker {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-400);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.section-title {
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--neutral-600);
  line-height: 1.65;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  line-height: 1.2;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-700) 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(11, 59, 44, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-600) 100%);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(11, 59, 44, 0.35);
}

.btn-gold {
  background: linear-gradient(135deg, var(--accent-500) 0%, var(--accent-600) 100%);
  color: var(--neutral-950);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
  font-weight: 700;
}

.btn-gold:hover {
  background: linear-gradient(135deg, var(--accent-400) 0%, var(--accent-500) 100%);
  color: var(--neutral-950);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--primary-800);
  border: 1.5px solid var(--primary-700);
}

.btn-outline:hover {
  background: var(--primary-100);
  color: var(--primary-900);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.btn-outline-white:hover {
  background: var(--white);
  color: var(--primary-900);
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1.05rem 2.2rem;
  font-size: 1.05rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
}

.badge-gold {
  background: var(--accent-100);
  color: var(--accent-900);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-green {
  background: var(--primary-100);
  color: var(--primary-800);
  border: 1px solid rgba(16, 82, 62, 0.2);
}

.badge-blue {
  background: var(--science-blue-light);
  color: var(--science-blue);
}

/* Grids */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: var(--spacing-2xl) 0; }
}

/* Card base */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-200);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--primary-500);
}