/* ============================================================
   GFL5R FIELD MANUAL — Near-Future Military Sci-Fi Theme
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary:    #060a12;
  --bg-secondary:  #0c1420;
  --bg-panel:      #0d1525;
  --bg-panel-alt:  #111b2e;
  --bg-hover:      #152238;

  --yellow:          #FFE135;
  --yellow-dim:      #8a7200;
  --yellow-glow:     rgba(255, 225, 53, 0.15);
  --yellow-glow-strong: rgba(255, 225, 53, 0.35);
  --teal:          #FFC107;
  --amber:         #ff9100;
  --amber-dim:     #b36500;
  --red:           #ff3d3d;
  --green:         #39ff14;
  --white:         #e0e8f0;
  --white-dim:     #8899aa;
  --white-dimmer:  #556677;

  --font-heading:  'Rajdhani', 'Segoe UI', sans-serif;
  --font-mono:     'Share Tech Mono', 'Consolas', monospace;
  --font-body:     'Inter', 'Segoe UI', sans-serif;

  --sidebar-width: 280px;
  --topbar-height: 52px;
  --border-color:  rgba(255, 225, 53, 0.15);
  --border-glow:   rgba(255, 225, 53, 0.3);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--white);
  overflow-x: hidden;
  min-height: 100vh;
}

::selection {
  background: var(--yellow);
  color: var(--bg-primary);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb {
  background: var(--yellow-dim);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--yellow); }

/* --- Scanline Overlay --- */
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

/* --- Top Bar --- */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.top-bar::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--yellow-dim) 20%,
    var(--yellow) 50%,
    var(--yellow-dim) 80%,
    transparent 100%
  );
  animation: topBarGlow 4s ease-in-out infinite;
}

@keyframes topBarGlow {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.top-bar__left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-bar__logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 2px;
  line-height: 1;
}

.logo-prefix {
  color: var(--white);
}

.logo-suffix {
  color: var(--yellow);
}

.top-bar__subtitle {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--white-dim);
  letter-spacing: 3px;
  padding-left: 16px;
  border-left: 1px solid var(--border-color);
}

.top-bar__right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-bar__status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--green);
  letter-spacing: 1px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--green); }
  50% { opacity: 0.4; box-shadow: 0 0 2px var(--green); }
}

.top-bar__search {
  position: relative;
}

.top-bar__search input {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 14px;
  width: 240px;
  outline: none;
  letter-spacing: 1px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.top-bar__search input::placeholder {
  color: var(--white-dimmer);
}

.top-bar__search input:focus {
  border-color: var(--yellow);
  box-shadow: 0 0 12px var(--yellow-glow);
}

.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-top: none;
  max-height: 300px;
  overflow-y: auto;
  display: none;
  z-index: 100;
}

.search-results.active { display: block; }

.search-result-item {
  padding: 10px 14px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.2s;
}

.search-result-item:hover {
  background: var(--bg-hover);
  color: var(--yellow);
}

.search-result-item .result-section {
  color: var(--yellow-dim);
  font-size: 0.65rem;
  margin-bottom: 2px;
}

/* --- Nav Toggle (Mobile) --- */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  padding: 6px;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  width: 32px;
  height: 32px;
  justify-content: center;
  align-items: center;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--yellow);
  transition: transform 0.3s;
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--topbar-height));
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  z-index: 900;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.sidebar__inner {
  flex: 1;
  padding: 12px 0;
}

.sidebar__section {
  margin-bottom: 4px;
}

.sidebar__heading {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--yellow);
  padding: 10px 20px;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s;
}

.sidebar__heading:hover {
  background: var(--bg-hover);
}

.heading-icon {
  font-size: 0.5rem;
  transition: transform 0.3s;
}

.sidebar__section.collapsed .heading-icon {
  transform: rotate(-90deg);
}

.sidebar__section.collapsed .sidebar__links {
  display: none;
}

.sidebar__links {
  list-style: none;
  padding: 0;
}

.sidebar__links li {
  border-left: 2px solid transparent;
  transition: border-color 0.2s;
}

.sidebar__links li:has(.nav-link.active) {
  border-left-color: var(--yellow);
}

.nav-link {
  display: block;
  padding: 7px 20px 7px 32px;
  color: var(--white-dim);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 400;
  transition: color 0.2s, background 0.2s, padding-left 0.2s;
  letter-spacing: 0.3px;
}

.nav-link:hover {
  color: var(--white);
  background: var(--bg-hover);
  padding-left: 36px;
}

.nav-link.active {
  color: var(--yellow);
  font-weight: 500;
}

.sidebar__footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
}

.sidebar__version {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--white-dimmer);
  letter-spacing: 1px;
}

/* --- Page Navigation Buttons --- */
.page-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.page-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--yellow);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all 0.2s;
  cursor: pointer;
  min-width: 140px;
  justify-content: center;
}

.page-nav__link:hover {
  border-color: var(--yellow);
  box-shadow: 0 0 12px var(--yellow-glow);
  background: var(--bg-hover);
}

.page-nav__prev {
  flex-direction: row-reverse;
}

.page-nav__prev .page-nav__label {
  text-align: right;
}

.page-nav__arrow {
  font-size: 1.2rem;
  font-weight: bold;
}

.page-nav__dir {
  display: block;
  font-size: 0.65rem;
  opacity: 0.8;
  margin-bottom: 2px;
}

.page-nav__title {
  display: block;
  font-weight: 500;
}

/* --- Layout --- */
.layout {
  display: flex;
  padding-top: var(--topbar-height);
}

/* --- Main Content --- */
.content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: calc(100vh - var(--topbar-height));
  padding: 32px 40px 60px;
  max-width: 100%;
}

.content__inner {
  max-width: 920px;
  margin: 0 auto;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Content Typography --- */
.content__inner h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--yellow);
  letter-spacing: 2px;
  text-transform: uppercase;
  padding-bottom: 12px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.content__inner h1::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 120px;
  height: 2px;
  background: var(--yellow);
  box-shadow: 0 0 10px var(--yellow-glow-strong);
}

.content__inner h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 1px;
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.content__inner h2::before {
  content: '//';
  color: var(--yellow-dim);
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 1rem;
}

.content__inner h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--teal);
  margin-top: 24px;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.content__inner h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  color: var(--amber);
  margin-top: 16px;
  margin-bottom: 8px;
}

.content__inner p {
  line-height: 1.75;
  margin-bottom: 14px;
  color: var(--white);
  font-weight: 300;
}

.content__inner strong {
  color: var(--white);
  font-weight: 500;
}

.content__inner em {
  color: var(--white-dim);
  font-style: italic;
}

.content__inner a {
  color: var(--yellow);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.content__inner a:hover {
  border-bottom-color: var(--yellow);
}

.content__inner ul,
.content__inner ol {
  margin: 12px 0 16px 24px;
  line-height: 1.75;
}

.content__inner li {
  margin-bottom: 6px;
  color: var(--white);
  font-weight: 300;
}

.content__inner li::marker {
  color: var(--yellow-dim);
}

.content__inner hr {
  border: none;
  height: 1px;
  background: var(--border-color);
  margin: 20px 0;
}

.content__inner blockquote {
  border-left: 3px solid var(--yellow);
  background: var(--bg-panel);
  padding: 14px 20px;
  margin: 16px 0;
  font-style: italic;
  color: var(--white-dim);
}

.content__inner code {
  font-family: var(--font-mono);
  background: var(--bg-panel);
  color: var(--yellow);
  padding: 2px 6px;
  font-size: 0.9em;
  border: 1px solid var(--border-color);
}

.content__inner pre {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 16px;
  overflow-x: auto;
  margin: 16px 0;
}

.content__inner pre code {
  background: none;
  border: none;
  padding: 0;
}

/* --- Tables --- */
.content__inner table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9rem;
}

.content__inner thead {
  background: var(--bg-panel-alt);
}

.content__inner th {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--yellow);
  text-transform: uppercase;
  font-size: 0.75rem;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 2px solid var(--yellow-dim);
}

.content__inner td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--white);
  font-weight: 300;
}

.content__inner tr:hover td {
  background: var(--bg-hover);
}

/* --- Technique Cards --- */
.technique-grid {
  display: grid;
  gap: 20px;
  margin-top: 24px;
}

.technique-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 0;
  margin: 32px 0;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.technique-card:hover {
  border-color: var(--yellow-dim);
  box-shadow: 0 0 20px var(--yellow-glow);
}

.technique-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--bg-panel-alt);
  border-bottom: 1px solid var(--border-color);
}

.technique-card__name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.5px;
}

.technique-card__meta {
  display: flex;
  gap: 8px;
  align-items: center;
}

.technique-card__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 1px;
  padding: 3px 8px;
  border: 1px solid;
  text-transform: uppercase;
}

.tag-rank {
  color: var(--amber);
  border-color: var(--amber-dim);
}

.tag-type {
  color: var(--yellow);
  border-color: var(--yellow-dim);
}

.tag-approach {
  color: var(--green);
  border-color: rgba(57, 255, 20, 0.3);
}

.tag-skill {
  color: var(--white-dim);
  border-color: var(--white-dimmer);
}

.technique-card__flavor {
  padding: 14px 20px;
  font-style: italic;
  color: var(--white-dim);
  font-size: 0.85rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--border-color);
}

.technique-card__body {
  padding: 0 20px 20px 20px;
  line-height: 1.7;
}

.technique-card__body h3 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--amber);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 12px;
  margin-bottom: 8px;
}

.technique-card__body h3:first-child {
  margin-top: 0;
}

.technique-card__body p {
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.technique-card__body ul {
  margin: 8px 0 12px 20px;
}

.technique-card__body li {
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.technique-card__corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--yellow-dim);
}

.technique-card__corner--tl { top: 0; left: 0; border-top: 2px solid; border-left: 2px solid; }
.technique-card__corner--tr { top: 0; right: 0; border-top: 2px solid; border-right: 2px solid; }
.technique-card__corner--bl { bottom: 0; left: 0; border-bottom: 2px solid; border-left: 2px solid; }
.technique-card__corner--br { bottom: 0; right: 0; border-bottom: 2px solid; border-right: 2px solid; }

/* --- Technique Filters --- */
.technique-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 1px;
  padding: 6px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--white-dim);
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--yellow-dim);
  color: var(--white);
}

.filter-btn.active {
  background: var(--yellow-glow);
  border-color: var(--yellow);
  color: var(--yellow);
}

.filter-dropdown {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 1px;
  padding: 6px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--white-dim);
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.2s;
  margin-right: 10px;
}

.filter-dropdown:hover {
  border-color: var(--yellow-dim);
  color: var(--white);
}

.filter-dropdown:focus {
  border-color: var(--yellow);
  color: var(--white);
  outline: none;
}

/* --- Home Page --- */
.home-hero {
  text-align: center;
  padding: 60px 0 40px;
}

.home-hero__title {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: 6px;
  margin-bottom: 4px;
}

.home-hero__title .hero-gfl {
  color: var(--white);
}

.home-hero__title .hero-5r {
  color: var(--yellow);
}

.home-hero__subtitle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--white-dim);
  letter-spacing: 4px;
  margin-bottom: 40px;
}

.home-hero__line {
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--yellow), transparent);
  margin: 0 auto 40px;
}

.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.home-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 24px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s;
}

.home-card:hover {
  border-color: var(--yellow-dim);
  box-shadow: 0 0 30px var(--yellow-glow);
  transform: translateY(-2px);
}

.home-card__icon {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--yellow);
  margin-bottom: 12px;
}

.home-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.home-card__desc {
  font-size: 0.82rem;
  color: var(--white-dim);
  line-height: 1.6;
  font-weight: 300;
}

.home-card__corner {
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--yellow-dim);
}

.home-card__corner--tl { top: 0; left: 0; border-top: 1px solid; border-left: 1px solid; }
.home-card__corner--tr { top: 0; right: 0; border-top: 1px solid; border-right: 1px solid; }
.home-card__corner--bl { bottom: 0; left: 0; border-bottom: 1px solid; border-left: 1px solid; }
.home-card__corner--br { bottom: 0; right: 0; border-bottom: 1px solid; border-right: 1px solid; }

/* --- Breadcrumb --- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--white-dimmer);
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--yellow-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--yellow);
}

.breadcrumb .sep {
  margin: 0 6px;
  color: var(--white-dimmer);
}

/* --- HUD Decorations --- */
.hud-border {
  position: relative;
  border: 1px solid var(--border-color);
  padding: 20px;
}

.hud-border::before,
.hud-border::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
}

.hud-border::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--yellow);
  border-left: 2px solid var(--yellow);
}

.hud-border::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--yellow);
  border-right: 2px solid var(--yellow);
}

/* --- Loading Overlay --- */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 1;
  transition: opacity 0.5s;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  text-align: center;
}

.spinner-ring {
  width: 48px;
  height: 48px;
  border: 2px solid var(--border-color);
  border-top-color: var(--yellow);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--yellow);
  letter-spacing: 3px;
  animation: blink 1.5s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0.3; }
}

/* --- Type Category Colors --- */
.type-combat      { --type-color: #ff3d3d; }
.type-ew          { --type-color: #00e5ff; }
.type-street      { --type-color: #9c27b0; }
.type-conditioning { --type-color: #ff9100; }
.type-science     { --type-color: #4caf50; }
.type-social      { --type-color: #e91e63; }
.type-vehicle     { --type-color: #ffc107; }
.type-remolding   { --type-color: #7c4dff; }

/* --- Responsive --- */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .content {
    margin-left: 0;
    padding: 24px 20px 40px;
  }

  .top-bar__subtitle { display: none; }
  .top-bar__status { display: none; }

  .top-bar__search input {
    width: 160px;
  }

  .home-hero__title {
    font-size: 2.4rem;
  }
}

@media (max-width: 600px) {
  .top-bar__search { display: none; }
  .home-grid { grid-template-columns: 1fr; }

  .technique-card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .technique-card__meta {
    flex-wrap: wrap;
  }
}

/* --- Technique Type Header --- */
.type-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.type-header__icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--yellow);
}

.technique-icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
}

.type-header__info h1 {
  border: none;
  padding: 0;
  margin: 0;
}

.type-header__info h1::after { display: none; }

.type-header__desc {
  font-size: 0.85rem;
  color: var(--white-dim);
  font-weight: 300;
  margin-top: 4px;
}

/* --- Rank Dividers --- */
.rank-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 36px 0 20px;
}

.rank-divider__line {
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

.rank-divider__label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--amber);
  text-transform: uppercase;
  white-space: nowrap;
}

/* --- Game-Specific Content Elements --- */

/* Rules Callout Box */
.rules-callout {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--yellow);
  padding: 20px 24px;
  margin: 20px 0;
  position: relative;
}

.rules-callout::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -3px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--yellow);
  border-left: 2px solid var(--yellow);
}

.rules-callout h3,
.rules-callout h4 {
  margin-top: 0;
  color: var(--yellow);
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.rules-callout p:last-child {
  margin-bottom: 0;
}

/* Example Box */
.example-box {
  background: linear-gradient(135deg, var(--bg-panel) 0%, var(--bg-panel-alt) 100%);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--amber);
  padding: 20px 24px;
  margin: 20px 0;
  position: relative;
}

.example-box::before {
  content: '◇ EXAMPLE';
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--amber);
  margin-bottom: 12px;
}

.example-box.labeled::before {
  display: none;
}

.example-box .example-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--amber);
  margin-bottom: 12px;
  display: block;
}

.example-box h4 {
  color: var(--amber);
  margin-top: 8px;
}

.example-box p:last-child {
  margin-bottom: 0;
}

/* Question Block (Character Creation) */
.question-block {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 24px;
  margin: 28px 0;
  position: relative;
}

.question-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--yellow), transparent);
}

.question-block .question-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--yellow);
  margin-bottom: 8px;
  display: block;
}

.question-block h3 {
  color: var(--white);
  margin-top: 0;
  font-size: 1.2rem;
}

/* Stat Block */
.stat-block {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.stat-item {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border-color);
  padding: 14px 16px;
  text-align: center;
  transition: border-color 0.3s;
}

.stat-item:hover {
  border-color: var(--yellow-dim);
}

.stat-item .stat-name {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--yellow);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.stat-item .stat-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--white);
}

.stat-item .stat-desc {
  font-size: 0.78rem;
  color: var(--white-dim);
  margin-top: 6px;
  line-height: 1.5;
}

/* Formula Display */
.formula {
  font-family: var(--font-mono);
  background: var(--bg-panel-alt);
  border: 1px solid var(--border-color);
  padding: 10px 16px;
  display: inline-block;
  color: var(--yellow);
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  margin: 8px 0;
}

/* TN Guide */
.tn-guide {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 20px 24px;
  margin: 20px 0;
}

.tn-guide h3 {
  color: var(--yellow);
  margin-top: 0;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.tn-entry {
  display: flex;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
  align-items: baseline;
}

.tn-entry:last-child {
  border-bottom: none;
}

.tn-value {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--amber);
  min-width: 40px;
  text-align: center;
  font-weight: 700;
}

.tn-label {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.5px;
  min-width: 140px;
}

.tn-desc {
  font-size: 0.85rem;
  color: var(--white-dim);
  font-weight: 300;
  line-height: 1.5;
}

/* Dice Face Display */
.dice-faces {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 16px 0;
}

.dice-column {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
}

.dice-column h4 {
  color: var(--amber);
  margin-top: 0;
  font-family: var(--font-heading);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.dice-column ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.dice-column li {
  padding: 4px 0;
  font-size: 0.88rem;
  color: var(--white-dim);
  font-weight: 300;
}

.dice-column li::before {
  content: '▸ ';
  color: var(--yellow-dim);
}

/* Condition Card */
.condition-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  margin: 20px 0;
  overflow: hidden;
}

.condition-card__header {
  background: var(--bg-panel-alt);
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.condition-card__name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.5px;
}

.condition-card__body {
  padding: 16px 20px;
}

.condition-card__body p:last-child {
  margin-bottom: 0;
}

.condition-card__section {
  margin-bottom: 12px;
}

.condition-card__section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--yellow-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.condition-card .removal-note {
  background: var(--bg-panel-alt);
  border-top: 1px solid var(--border-color);
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--green);
}

.condition-card .removal-note strong {
  color: var(--green);
}

/* Substance Card */
.substance-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  margin: 32px 0;
  overflow: hidden;
}

.substance-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
}

.substance-card__body {
  padding: 0 20px 20px 20px;
}

.substance-card__names-table {
  width: 100%;
  margin-bottom: 16px;
}

.substance-card__names-table td {
  padding: 4px 12px;
  font-size: 0.85rem;
}

.substance-card__names-table td:first-child {
  color: var(--amber);
  font-family: var(--font-mono);
  width: 40%;
}

.substance-card__names-table td:last-child {
  color: var(--white-dim);
}

.substance-card .use-block {
  border-left: 3px solid var(--yellow-dim);
  padding: 10px 16px;
  margin: 12px 0 16px 0;
  background: var(--bg-panel-alt);
}

.substance-card .use-block.medical {
  border-left-color: var(--green);
}

.substance-card .use-block.harmful {
  border-left-color: var(--red);
}

.substance-card .use-block h4 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

.substance-card .onset-duration {
  display: flex;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--white-dimmer);
  letter-spacing: 1px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.substance-card .onset-duration span {
  color: var(--yellow-dim);
}

/* Advantage/Passion Card */
.peculiarity-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  margin: 32px 0;
  transition: border-color 0.3s;
}

.peculiarity-card__body {
  padding: 0 20px 20px 20px;
}

.peculiarity-card:hover {
  border-color: var(--yellow-dim);
}

.peculiarity-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.peculiarity-card__name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
}

.peculiarity-card__type {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 1px;
  color: var(--yellow-dim);
  text-transform: uppercase;
  padding: 2px 8px;
  border: 1px solid var(--border-color);
}

.peculiarity-card__desc {
  font-size: 0.88rem;
  color: var(--white-dim);
  line-height: 1.6;
  margin-bottom: 6px;
}

.peculiarity-card__effect {
  font-size: 0.85rem;
  color: var(--white);
  line-height: 1.6;
}

/* Module Card */
.module-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  margin: 10px 0;
  transition: border-color 0.3s;
}

.module-card:hover {
  border-color: var(--yellow-dim);
}

.module-card h4 {
  margin-top: 0;
  color: var(--white);
}

.module-card p {
  font-size: 0.88rem;
  margin-bottom: 0;
}

/* Zone Classification Cards */
.zone-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  margin: 32px 0;
  overflow: hidden;
}

.zone-card h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.zone-card__body {
  padding: 0 20px 20px 20px;
}

.zone-card__body ul {
  margin: 8px 0 0 16px;
}

.zone-card__body li {
  font-size: 0.88rem;
  margin-bottom: 4px;
}

.zone-white .zone-card__indicator { background: #f5f5f5; }
.zone-green .zone-card__indicator { background: var(--green); }
.zone-yellow .zone-card__indicator { background: #ffc107; }
.zone-purification .zone-card__indicator { background: #8bc34a; }
.zone-red .zone-card__indicator { background: var(--red); }
.zone-black .zone-card__indicator { background: #1a1a2e; border: 1px solid var(--white-dimmer); }

/* Vent Action Cards */
.vent-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--red);
  margin: 32px 0;
}

.vent-card__body {
  padding: 0 20px 20px 20px;
}

.vent-card h4 {
  margin-top: 0;
  color: var(--red);
}

.vent-card p:last-child {
  margin-bottom: 0;
}

/* Step indicator */
.step-indicator {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--yellow);
  margin-bottom: 4px;
  display: block;
}

/* Data label for inline stats */
.data-label {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--yellow-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Section divider */
.section-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 36px 0 24px;
}

.section-divider__line {
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

.section-divider__label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--yellow);
  text-transform: uppercase;
  white-space: nowrap;
}

/* Content links that look like buttons */
.content-nav-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 1px;
  padding: 6px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--yellow);
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.2s;
  cursor: pointer;
}

.content-nav-link:hover {
  border-color: var(--yellow);
  box-shadow: 0 0 12px var(--yellow-glow);
}

/* Pair structure visual */
.pair-visual {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: center;
  margin: 24px 0;
}

.pair-side {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 20px;
  text-align: center;
}

.pair-connector {
  font-family: var(--font-mono);
  color: var(--yellow);
  font-size: 1.4rem;
  padding: 0 12px;
}

.pair-side h4 {
  margin-top: 0;
}

@media (max-width: 600px) {
  .pair-visual {
    grid-template-columns: 1fr;
  }
  .pair-connector {
    transform: rotate(90deg);
    padding: 8px 0;
  }
  .stat-block {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
  .tn-entry {
    flex-direction: column;
    gap: 4px;
  }
}

/* --- Grid background pattern --- */
.content::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  background-image:
    linear-gradient(var(--yellow) 1px, transparent 1px),
    linear-gradient(90deg, var(--yellow) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
}

/* --- Back to top button --- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--yellow);
  font-family: var(--font-mono);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s, border-color 0.3s;
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
}

.back-to-top:hover {
  border-color: var(--yellow);
  box-shadow: 0 0 12px var(--yellow-glow);
}

/* --- Collapsible technique card body --- */
.technique-card__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--white-dimmer);
  transition: color 0.2s, background 0.2s;
  user-select: none;
}

.technique-card__toggle:hover {
  color: var(--yellow);
  background: var(--bg-hover);
}

.technique-card.collapsed .technique-card__body {
  display: none;
}

.technique-card.collapsed .technique-card__toggle::after {
  content: '▼ EXPAND';
}

.technique-card:not(.collapsed) .technique-card__toggle::after {
  content: '▲ COLLAPSE';
}

/* Symbol images for dice faces */
.symbol,
.dice-icon {
  height: 1.2em;
  width: auto;
  vertical-align: middle;
  margin: 0 0.1em;
}