/* ===== Reset & Variables ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --clr-primary: #0A1F44;
  --clr-accent: #FF6F00;
  --clr-secondary1: #4A90D9;
  --clr-secondary2: #C5A55A;
  --clr-neutral1: #1A2A4A;
  --clr-neutral2: #2C3E5A;
  --clr-neutral3: #EAEAEA;
  --clr-text-light: #FFFFFF;
  --clr-text-dark: #0A1F44;
  --clr-bg-light: #F5F7FA;
  --font-heading: 'Impact', 'Arial Black', sans-serif;
  --font-body: 'Segoe UI', Roboto, sans-serif;
  --fs-h1: 4rem;
  --fs-h2: 2.5rem;
  --fs-h3: 1.75rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --max-width: 1280px;
  --header-height: 70px;
  --transition: 0.3s ease;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  color: var(--clr-text-light);
  background-color: var(--clr-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { max-width: 100%; display: block; }
:focus-visible {
  outline: 2px solid var(--clr-accent);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ===== Container ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .container { padding: 0 40px; }
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--clr-accent);
  color: var(--clr-text-light);
  padding: 0.5rem 1rem;
  z-index: 999;
  transition: top var(--transition);
}
.skip-link:focus {
  top: 0;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--clr-primary);
  border-bottom: 1px solid rgba(197,165,90,0.2);
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--clr-accent);
  letter-spacing: 0.02em;
  position: relative;
  z-index: 2;
}
.logo::after {
  content: '';
  display: block;
  width: 60%;
  height: 3px;
  background: var(--clr-secondary2);
  margin-top: 2px;
}
.main-nav ul {
  display: flex;
  gap: 2rem;
}
.main-nav a {
  display: inline-block;
  padding: 0.3rem 0;
  font-weight: 600;
  position: relative;
  color: var(--clr-text-light);
  transition: color var(--transition);
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-accent);
  transition: width var(--transition);
}
.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--clr-accent);
}
.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  width: 100%;
}
.main-nav a[aria-current="page"] {
  color: var(--clr-text-light);
  background: var(--clr-accent);
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
}
.main-nav a[aria-current="page"]::after { display: none; }

/* Nav Toggle (Mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 101;
}
.nav-toggle .bar {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--clr-text-light);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}
@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: 0;
    background: var(--clr-primary);
    overflow: hidden;
    transition: height 0.4s ease, padding 0.3s;
    padding: 0;
  }
  .main-nav[data-open] {
    height: auto;
    padding: 2rem 0;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
    text-align: center;
  }
  .main-nav li {
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .main-nav a[aria-current="page"] {
    background: transparent;
    color: var(--clr-accent);
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--clr-neutral1);
  border-top: 2px solid var(--clr-accent);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.footer-brand .footer-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--clr-accent);
  margin-bottom: 0.3rem;
}
.footer-tagline {
  color: var(--clr-secondary2);
  font-size: var(--fs-small);
}
.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--clr-text-light);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.footer-links a:hover,
.footer-links a:focus-visible {
  border-bottom-color: var(--clr-accent);
  color: var(--clr-accent);
}
.footer-info {
  font-size: var(--fs-small);
  color: var(--clr-neutral3);
  line-height: 1.8;
}
.footer-info a {
  color: var(--clr-secondary2);
  text-decoration: underline;
}
.footer-icp {
  margin-top: 1rem;
  border-top: 1px solid rgba(197,165,90,0.3);
  padding-top: 1rem;
}
.footer-trust {
  font-size: 0.75rem;
  color: var(--clr-neutral3);
  opacity: 0.7;
  margin-top: 1rem;
}

/* ===== Common Components ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.8rem;
  font-family: var(--font-body);
  font-weight: 700;
  border: 2px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}
.btn-primary {
  background: var(--clr-accent);
  color: var(--clr-text-light);
  border-color: var(--clr-accent);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: #e06300;
  border-color: #e06300;
  transform: scale(0.97);
}
.btn-secondary {
  background: transparent;
  color: var(--clr-accent);
  border-color: var(--clr-accent);
}
.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: var(--clr-accent);
  color: var(--clr-text-light);
}

.link-hover {
  color: var(--clr-secondary2);
  text-decoration: underline;
  transition: color var(--transition);
}
.link-hover:hover {
  color: var(--clr-accent);
}

/* ===== Card ===== */
.card {
  background: var(--clr-neutral1);
  border-radius: 12px;
  padding: 2rem;
  border: 1px solid rgba(255,111,0,0.15);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-4px);
}

/* ===== Headings ===== */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.1;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
@media (max-width: 767px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.3rem; }
}

/* ===== Section ===== */
.section {
  padding: 5rem 0;
}

/* ===== Scroll to Top Button ===== */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-accent);
  color: var(--clr-text-light);
  border: 2px solid var(--clr-accent);
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: center;
}
.scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
}
.scroll-top:hover {
  transform: scale(1.1);
  background: #e06300;
}

/* ===== Image Placeholder (for page CSS) ===== */
.img-placeholder {
  background: var(--clr-neutral2);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-neutral3);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  border-radius: 8px;
}

/* ===== Utility ===== */
.text-accent { color: var(--clr-accent); }
.text-secondary1 { color: var(--clr-secondary1); }
.text-secondary2 { color: var(--clr-secondary2); }
.bg-primary { background: var(--clr-primary); }
.bg-neutral1 { background: var(--clr-neutral1); }
.bg-neutral2 { background: var(--clr-neutral2); }
.text-light { color: var(--clr-text-light); }
.text-dark { color: var(--clr-text-dark); }