/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; line-height: 1.6; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; color: #2C3E50; background: #F5F7FA; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; background: none; border: none; }
:focus-visible { outline: 3px solid #FFD700; outline-offset: 2px; border-radius: 4px; }

/* ===== CSS Variables ===== */
:root {
  --color-primary: #0A1F3F;
  --color-accent: #FFD700;
  --color-green: #00E676;
  --color-green-dark: #00BFA5;
  --color-accent-soft: #FFC107;
  --color-bg-light: #F5F7FA;
  --color-text-dark: #2C3E50;
  --color-white: #FFFFFF;
  --gradient-hero: linear-gradient(135deg, #0A1F3F, #004D9A);
  --font-heading: Impact, 'Arial Black', sans-serif;
  --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --radius-capsule: 50px;
  --radius-card: 12px;
  --shadow-island: 0 8px 32px rgba(10, 31, 63, 0.35);
  --shadow-card: 0 4px 16px rgba(10, 31, 63, 0.12);
  --transition: 0.3s ease;
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 700;
  z-index: 10000;
  transition: top 0.3s;
}
.skip-link:focus { top: 12px; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9000;
  padding: 12px 20px;
  background: transparent;
  pointer-events: none;
}
.site-header * { pointer-events: auto; }
.header-island {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-primary);
  padding: 8px 20px 8px 24px;
  border-radius: var(--radius-capsule);
  box-shadow: var(--shadow-island);
  border: 1px solid rgba(255, 215, 0, 0.15);
  position: relative;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 22px;
  letter-spacing: 1px;
  white-space: nowrap;
  flex-shrink: 0;
}
.brand-icon { font-size: 26px; color: var(--color-accent); line-height: 1; }
.brand-text { background: linear-gradient(135deg, #FFD700, #FFC107); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; text-shadow: none; }

/* ===== Navigation ===== */
.nav { flex: 1; display: flex; justify-content: flex-end; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-list a {
  display: block;
  padding: 6px 16px;
  border-radius: 30px;
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-list a:hover { background: rgba(255, 215, 0, 0.15); color: var(--color-accent); }
.nav-list a[aria-current="page"] {
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}

/* ===== CTA Button ===== */
.btn-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 22px;
  border-radius: 30px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
  flex-shrink: 0;
}
.btn-cta:hover { transform: scale(1.05); box-shadow: 0 6px 20px rgba(255, 215, 0, 0.5); }
.btn-cta:active { transform: scale(0.97); }

/* ===== Nav Toggle ===== */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  gap: 5px;
  flex-shrink: 0;
  transition: background var(--transition);
}
.nav-toggle:hover { background: rgba(255, 215, 0, 0.15); }
.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 40px 20px 24px;
  border-top: 3px solid var(--color-accent);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -3px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-green), var(--color-accent));
  opacity: 0.6;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px 40px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 24px;
  letter-spacing: 1px;
}
.footer-brand .brand-icon { font-size: 30px; }
.footer-brand .brand-text { background: linear-gradient(135deg, #FFD700, #FFC107); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255, 215, 0, 0.1);
  transition: color var(--transition), border-color var(--transition);
}
.footer-links a:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}
.footer-email {
  color: var(--color-accent);
  font-weight: 600;
  transition: opacity var(--transition);
}
.footer-email:hover { opacity: 0.8; text-decoration: underline; }
.footer-phone { color: rgba(255, 255, 255, 0.8); letter-spacing: 0.5px; }
.footer-legal {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 215, 0, 0.15);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-year::before { content: '© '; }

/* ===== Scroll Progress ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-accent);
  z-index: 9999;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-green);
  color: var(--color-primary);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 230, 118, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), background var(--transition);
  z-index: 8000;
  border: 2px solid rgba(255, 255, 255, 0.2);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-accent); box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4); }
.back-to-top:active { transform: translateY(0) scale(0.93); }

/* ===== Common Components ===== */
/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  padding: 12px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}
.breadcrumb a { color: var(--color-accent); transition: opacity var(--transition); }
.breadcrumb a:hover { opacity: 0.7; }
.breadcrumb .sep { color: rgba(255,255,255,0.3); }

/* Content Container */
.content-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Card Base */
.card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  border: 1px solid rgba(10, 31, 63, 0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(10, 31, 63, 0.16); }

/* Print Border */
.print-border {
  border: 2px double rgba(255, 215, 0, 0.3);
  border-radius: 6px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
}

/* Tag / Label */
.tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--color-accent-soft);
  color: var(--color-primary);
}
.tag-green { background: var(--color-green); color: var(--color-primary); }
.tag-outline { background: transparent; border: 1.5px solid var(--color-accent); color: var(--color-accent); }

/* Image Container Placeholder */
.img-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  background: #e8ecf1;
  border-radius: 8px;
  overflow: hidden;
}
.img-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Paper Stack Effect */
.paper-stack {
  position: relative;
  background: var(--color-white);
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(10,31,63,0.08), 0 4px 12px rgba(10,31,63,0.05);
}
.paper-stack::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 4px;
  right: 4px;
  height: 6px;
  background: rgba(10,31,63,0.04);
  border-radius: 0 0 4px 4px;
  z-index: -1;
}

/* ===== Typography ===== */
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-primary); line-height: 1.15; }
h1 { font-size: clamp(42px, 8vw, 72px); letter-spacing: -0.5px; text-shadow: 2px 2px 0 rgba(255, 215, 0, 0.15); }
h2 { font-size: clamp(32px, 5vw, 48px); letter-spacing: -0.3px; }
h3 { font-size: clamp(24px, 3.5vw, 36px); }
h4 { font-size: clamp(18px, 2.5vw, 24px); }
body, p, li { font-family: var(--font-body); font-size: 16px; line-height: 1.6; color: var(--color-text-dark); }
.small-text { font-size: 14px; line-height: 1.5; color: rgba(44,62,80,0.7); }

/* ===== Section Spacing ===== */
.section { padding: 60px 0; }
.section-dark { background: var(--color-primary); color: var(--color-white); }
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--color-white); }
.section-accent { background: linear-gradient(135deg, #0A1F3F, #004D9A); color: var(--color-white); }

/* ===== Grid ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.grid-asymmetric { display: grid; grid-template-columns: 2fr 1fr; gap: 28px; }

/* ===== Button System ===== */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 28px;
  border-radius: 30px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  transition: transform var(--transition), box-shadow var(--transition);
  border: none;
}
.btn-primary { background: var(--color-accent); color: var(--color-primary); box-shadow: 0 4px 12px rgba(255,215,0,0.3); }
.btn-primary:hover { transform: scale(1.04); box-shadow: 0 6px 20px rgba(255,215,0,0.5); }
.btn-outline { background: transparent; color: var(--color-accent); border: 2px solid var(--color-accent); }
.btn-outline:hover { background: var(--color-accent); color: var(--color-primary); transform: scale(1.04); }
.btn-green { background: var(--color-green); color: var(--color-primary); box-shadow: 0 4px 12px rgba(0,230,118,0.3); }
.btn-green:hover { transform: scale(1.04); box-shadow: 0 6px 20px rgba(0,230,118,0.5); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .header-island { border-radius: 24px; padding: 8px 16px; }
  .brand-text { font-size: 18px; }
  .nav-list a { padding: 6px 12px; font-size: 13px; }
  .btn-cta { padding: 6px 16px; font-size: 13px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .grid-2, .grid-asymmetric { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .section { padding: 40px 0; }
}

@media (max-width: 700px) {
  .site-header { padding: 8px 12px; }
  .header-island { border-radius: 20px; padding: 6px 12px; gap: 8px; }
  .brand-text { font-size: 16px; }
  .brand-icon { font-size: 22px; }
  .btn-cta { display: none; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; margin-top: 8px; }
  .nav[data-open] { display: block; }
  .nav[data-open] .nav-list {
    flex-direction: column;
    background: var(--color-primary);
    border-radius: 20px;
    padding: 16px;
    box-shadow: var(--shadow-island);
    border: 1px solid rgba(255,215,0,0.15);
    gap: 4px;
  }
  .nav[data-open] .nav-list a { width: 100%; text-align: center; padding: 10px 16px; font-size: 15px; }
  .nav-toggle { display: flex; }
  .header-island { flex-wrap: wrap; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .footer-legal { flex-direction: column; gap: 8px; align-items: flex-start; }
  .grid-3 { grid-template-columns: 1fr; }
  .back-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; font-size: 20px; }
  .section { padding: 28px 0; }
  .content-container { padding: 0 14px; }
}

@media (max-width: 480px) {
  .brand-text { font-size: 14px; }
  .header-island { padding: 4px 10px; border-radius: 16px; }
  .nav-toggle { width: 36px; height: 36px; }
  .nav-toggle-bar { width: 16px; }
  .site-footer { padding: 28px 14px 20px; }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .card:hover { transform: none; }
  .btn-cta:hover { transform: none; }
  .back-to-top { transition: none; }
  .nav-list a { transition: none; }
}

/* ===== Selection ===== */
::selection { background: var(--color-accent); color: var(--color-primary); }