:root {
  /* Color System — Academy Pro */
  --color-primary: #003087;
  --color-primary-hover: #002266;
  --color-primary-main: #002266;
  --color-primary-dark: #001a52;
  --color-primary-light: #e8f0fe;
  --color-accent: #c8102e;
  --color-surface-bg: #e8f0fe;
  --color-page-bg: #f4f6fb;
  --color-border: #d0dae8;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-text-muted: #718096;
  --color-primary-text: #ffffff;
  /* Header */
  --header-bg: var(--color-primary);
  --header-color: var(--color-primary-text);
  --header-border: none;
  /* Footer */
  --footer-bg: var(--color-primary);
  --footer-text: var(--color-primary-text);
  --footer-heading: var(--color-primary-text);
  --footer-border: 1px solid rgba(255, 255, 255, 0.12);
  /* Home */
  --home-radius: 8px;
  --home-shadow: 0 2px 12px rgba(0, 48, 135, 0.08);
  --home-border-color: #d0dae8;
  --home-bg: #ffffff;
  /* Board */
  --board-radius: 6px;
  --board-accent: #003087;
  --board-accent-dark: #001a52;
  --board-accent-light: #e8f0fe;
  /* Sidebar Width */
  --menu-width: 300px;
}
body {
  background: var(--color-page-bg);
}
.topbar {
  background: #001a52;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.8rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.topbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.topbar-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  transition: background 0.2s;
  white-space: nowrap;
}
.topbar-links a:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.header {
  background: var(--header-bg);
  color: var(--header-color);
  border-bottom: var(--header-border);
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.1);
  position: sticky;
  top: 0;
  z-index: 1001;
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
}
.header-content .logo {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  text-decoration: none;
  line-height: 1.4;
}
.header-content .logo::before {
  content: '';
  background-image: var(--logo);
  height: 3.6rem;
  min-width: 3.6rem;
  background-position: center;
  background-size: cover;
  border-radius: var(--border-radius);
}
.logo-text {
  font-size: 1.35rem;
  font-weight: 700;
}
.logo-subtitle {
  opacity: 0.8;
  margin: 0;
}
.topmenu > ul > li > button,
.topmenu > ul > li > a {
  color: rgba(255, 255, 255, 0.92);
  font-weight: 500;
  border-radius: 4px;
}
.topmenu li:hover > a:not(.active),
.topmenu li:not(.menu-close):hover > button:not(.active),
.topmenu li.select {
  color: #ffffff;
  background-color: rgba(200, 16, 46, 0.85);
}
.topmenu > ul > li > a.active,
.topmenu > ul > li > button.active {
  background-color: var(--color-accent);
  color: #ffffff;
}
/* Mobile hamburger */
.menu-toggle .toggle-bar {
  background-color: #ffffff;
}
.sidemenu li > a {
  border-left: 4px solid var(--color-primary);
}
.sidemenu li > a:hover,
.sidemenu li > a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.hero {
  background-image: linear-gradient(135deg, var(--color-primary) 0%, #1a4da0 50%, var(--color-primary-dark) 100%);
  color: #ffffff;
  padding: var(--space-16) 0;
  text-align: center;
}
.section-bg {
  box-shadow: var(--home-shadow);
}
.section__header h2 {
  padding-left: var(--space-2);
  font-size: 1.05rem;
  color: var(--color-primary-text);
  border-left: 4px solid var(--color-accent);
}
.content .section__header,
.sidebar .section__header {
  background: var(--header-bg);
  color: var(--header-color);
  padding: var(--space-3) var(--space-4);
}
.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  border-top: 4px solid var(--color-accent);
}
.footer-title {
  color: var(--footer-heading);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-3);
}
.footer-links li a {
  color: rgba(216, 232, 255, 0.8);
  transition: all 0.2s;
}
.footer-links li a:hover {
  color: #ffffff;
  padding-left: 4px;
}
.footer-bottom {
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-4) 0;
}
.footer-bottom p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.82rem;
  text-align: center;
  margin: 0;
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.8);
}
.footer-bottom a:hover {
  color: #ffffff;
}
@media (max-width: 768px) {
  .topbar {
    display: none;
  }
  .header-content .logo::before {
    height: 2.8rem;
    min-width: 2.8rem;
  }
  .logo-text {
    font-size: 1rem;
  }
}
.header-meta .category + * {
  margin-left: auto;
}
.album-view-toggle,
.comment-actions {
  margin-left: auto;
}
.image-links {
  padding: var(--space-12) 0;
}
.page-header > .container {
  align-items: center;
  border-bottom: none;
}
.page-header > .container,
.page-body > .container {
  padding: var(--space-4);
}
.homepage {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}