/* palette: sienna-blue */
:root {
  --primary-color: #5C2B0E;
  --secondary-color: #7D3A16;
  --accent-color: #1A3A6B;
  --background-color: #FEF3EC;
  --dark-color: #111111;
  --text-color: #333333;
  --border-color: rgba(0,0,0,0.12);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.16);
  --radius-sm: 6px; 
  --radius-md: 12px; 
  --radius-lg: 20px; 
  --radius-xl: 32px;
  --main-font: 'Lora', Georgia, serif;
  --alt-font: 'Source Sans 3', sans-serif;
}

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

/* Base resets and defaults */
html, body {
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: var(--alt-font);
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 1.7;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--main-font);
  color: var(--dark-color);
}

h1 {
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.1;
}

h2 {
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
}

h3 {
  font-size: clamp(18px, 2.8vw, 28px);
  font-weight: 600;
  line-height: 1.3;
}

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

/* STARTUP-GRADIENT Preset Styles */
section {
  padding: 56px 16px;
  margin: 0;
}

@media(min-width:1024px) {
  section {
    padding: 64px 24px;
  }
}

h1 .grad, .hero h1 span {
  background: linear-gradient(135deg, #fff, #c4652d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 {
  color: #fff;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
  box-shadow: 0 0 30px color-mix(in srgb, var(--accent-color) 50%, transparent);
}

.icon-bg {
  background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
  border-radius: 12px;
  padding: 12px;
}

/* Header & CSS Burger Nav */
.site-header {
  position: relative;
  z-index: 100;
}

.burger-btn {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
  z-index: 1001;
}

.burger-btn .bar {
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  transition: all 0.3s ease;
}

#menu-toggle:checked ~ .burger-btn .bar:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

#menu-toggle:checked ~ .burger-btn .bar:nth-child(2) {
  opacity: 0;
}

#menu-toggle:checked ~ .burger-btn .bar:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.site-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #ffffff;
  padding: 24px;
  box-shadow: var(--shadow-md);
  z-index: 999;
}

.site-nav a {
  display: block;
  padding: 8px 0;
  color: var(--text-color);
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--accent-color);
}

#menu-toggle:checked ~ .site-nav {
  display: block;
}

@media (min-width: 768px) {
  .burger-btn {
    display: none;
  }
  .site-nav {
    display: flex !important;
    position: static;
    background: transparent;
    box-shadow: none;
    padding: 0;
  }
  .site-nav ul {
    flex-direction: row;
  }
  .site-nav a {
    padding: 0;
  }
}

/* Hero Section (layered-depth) */
.hero-layered {
  position: relative;
  min-height: 77vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-layered .layer-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-size: cover;
  background-position: center;
  filter: blur(4px) brightness(0.5);
}

.hero-layered .layer-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  clip-path: polygon(0 12%, 100% 0, 100% 88%, 0 100%);
  background: var(--primary-color);
  opacity: 0.55;
}

.hero-layered .layer-content {
  position: relative;
  z-index: 3;
  color: #ffffff;
}

/* Button transitions */
.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
}

/* Section specific heights and details */
.quote-section {
  min-height: 320px;
  background-color: var(--background-color);
}

.quote-icon {
  font-size: 6rem;
  color: var(--accent-color);
  opacity: 0.3;
  line-height: 0.8;
  display: block;
}

.facts-section {
  min-height: 440px;
}

.myths-section {
  min-height: 440px;
}

.spotlight-section {
  min-height: 600px;
}

.checklist-section {
  min-height: 360px;
}

/* Card hover transitions */
.card {
  transition: transform 0.25s, box-shadow 0.25s;
}

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

/* Animations (CSS-only scroll reveal) */
@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  animation: reveal-up linear both;
  animation-timeline: view();
  animation-range: entry 0% entry 30%;
}

/* CSS @property definitions for potential stats/progress uses */
@property --count { syntax: '<integer>'; initial-value: 0; inherits: false; }
@property --bar { syntax: '<integer>'; initial-value: 0; inherits: false; }
@property --deg { syntax: '<integer>'; initial-value: 0; inherits: false; }

/* Cascade delays for cards */
.card:nth-child(1) { animation-delay: 0s; }
.card:nth-child(2) { animation-delay: .12s; }
.card:nth-child(3) { animation-delay: .24s; }
.card:nth-child(4) { animation-delay: .36s; }