/* DataInt Premium HUD-Inspired Style Sheet
 * Engineered with CSS Logical Properties for seamless LTR & RTL support.
 */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;700&family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  --bg-canvas: #080a0f;
  --bg-card: #0e111a;
  --bg-card-hover: #121724;
  --border-rule: rgba(255, 255, 255, 0.08);
  --border-rule-bright: rgba(255, 255, 255, 0.15);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-gold: #eab308;
  --accent-gold-glow: rgba(234, 179, 8, 0.15);
  --accent-indigo: #6366f1;
  --accent-indigo-glow: rgba(99, 102, 241, 0.2);
  --accent-wine: #b91c1c;
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.2);

  --font-sans: 'Outfit', sans-serif;
  --font-mono: 'Fira Code', monospace;
}

/* Base resets & typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background grid effect */
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  min-height: 100vh;
  background-image: 
    linear-gradient(var(--border-rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-rule) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center top;
  opacity: 0.25;
  pointer-events: none;
  z-index: 1;
}

/* Ambient Radial Glows */
.ambient-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-indigo-glow) 0%, transparent 70%);
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-secondary {
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-gold-glow) 0%, transparent 70%);
  bottom: 10%;
  right: -100px;
  pointer-events: none;
  z-index: 0;
}

/* Container */
.vk-container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 10;
}

/* Header & Typography */
.site-header {
  border-bottom: 1px solid var(--border-rule);
  padding: 24px 0;
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(8, 10, 15, 0.8);
}

.site-header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-text {
  font-family: var(--font-sans);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-text em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent-gold);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-gold);
}

.nav-link-btn {
  background: transparent;
  border: 1px solid var(--border-rule-bright);
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.nav-link-btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-gold);
}

/* Language selector dropdown */
.lang-selector {
  position: relative;
}

.lang-select-btn {
  background: transparent;
  border: 1px solid var(--border-rule);
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
  transition: all 0.2s ease;
}

.lang-select-btn:hover {
  border-color: var(--border-rule-bright);
  color: var(--text-primary);
}

.lang-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  margin-top: 6px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-rule-bright);
  border-radius: 6px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  width: 280px;
  padding: 8px;
  z-index: 1000;
}

/* Support left/right positioning based on dynamic language alignment */
html[dir="ltr"] .lang-dropdown-menu {
  right: 0;
}
html[dir="rtl"] .lang-dropdown-menu {
  left: 0;
}

.lang-dropdown-menu.show {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.lang-dropdown-item {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 4px;
  text-align: start;
  transition: all 0.15s ease;
}

.lang-dropdown-item:hover, .lang-dropdown-item.active {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

/* Hero Section */
.hero-section {
  padding: 80px 0 60px 0;
  text-align: center;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 28px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.live-badge:hover {
  background-color: rgba(16, 185, 129, 0.15);
  border-color: var(--accent-emerald);
  box-shadow: 0 0 15px var(--accent-emerald-glow);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.live-badge-text {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-emerald);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.hero-title {
  font-size: 52px;
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.15;
  max-width: 850px;
  margin: 0 auto 24px auto;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 18px;
  font-weight: 400;
  max-width: 700px;
  margin: 0 auto 40px auto;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--accent-gold);
  color: #000;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 28px;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.25s ease;
  box-shadow: 0 4px 20px rgba(234, 179, 8, 0.25);
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(234, 179, 8, 0.4);
  background-color: #facc15;
}

/* Broadsheet double-rule borders */
.ruled-container {
  border-top: 3px double var(--border-rule-bright);
  border-bottom: 3px double var(--border-rule-bright);
  padding: 48px 0;
  margin: 40px 0 80px 0;
}

/* Statistics Grid */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
  text-align: center;
}

.stat-card {
  padding: 16px;
}

.stat-val {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.2vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 8px;
  text-shadow: 0 0 20px rgba(255,255,255,0.05);
  white-space: nowrap;
}

.stat-lbl {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Spoiler Vault Section */
.spoiler-section {
  margin-bottom: 96px;
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
}

/* HUD tab selector */
.hud-tabs {
  display: flex;
  justify-content: center;
  border-bottom: 1px solid var(--border-rule);
  margin-bottom: 32px;
  list-style: none;
}

.hud-tab-item {
  margin: 0 12px;
}

.hud-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  padding: 16px 8px;
  cursor: pointer;
  position: relative;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s ease;
}

.hud-tab-btn:hover {
  color: var(--text-primary);
}

.hud-tab-btn.active {
  color: var(--accent-gold);
}

.hud-tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-gold);
  box-shadow: 0 0 8px var(--accent-gold);
}

/* Tab panes */
.hud-pane {
  display: none;
  background-color: var(--bg-card);
  border: 1px solid var(--border-rule);
  border-radius: 6px;
  padding: 32px;
  transition: opacity 0.3s ease;
}

.hud-pane.active {
  display: block;
}

.hud-pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-rule);
}

.pane-title {
  font-size: 20px;
  font-weight: 600;
}

.pane-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-gold);
}

.pane-body {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

/* Brand Ecosystem Grid */
.ecosystem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.brand-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-rule);
  border-radius: 6px;
  padding: 32px;
  transition: all 0.25s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.brand-card:hover {
  border-color: var(--border-rule-bright);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.05);
}

.brand-card.active {
  border-color: rgba(234, 179, 8, 0.3);
}

.brand-card.active:hover {
  box-shadow: 0 10px 30px rgba(234, 179, 8, 0.05);
}

.brand-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 56px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-rule-subtle);
}

.brand-logo-img {
  height: 40px;
  max-height: 40px;
  max-width: 180px;
  object-fit: contain;
  object-position: left center;
  filter: brightness(0.95);
}

.brand-card-header .vk-logo-main {
  font-size: 30px;
  line-height: 40px;
  display: inline-flex;
  align-items: center;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.brand-badge-gold {
  background-color: rgba(234, 179, 8, 0.1);
  color: var(--accent-gold);
  border: 1px solid rgba(234, 179, 8, 0.25);
}

.brand-badge-emerald {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.brand-badge-muted {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  border: 1px solid var(--border-rule);
}

.brand-card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.brand-card-tag {
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.brand-card-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  flex-grow: 1;
}

/* Typography styles for Typographic Brand Labels */
.vk-logo-main {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 28px;
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  text-decoration: none;
}
.vk-logo-main em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent-wine);
}

/* Footer style */
.site-footer {
  border-top: 1px solid var(--border-rule);
  padding: 48px 0;
  margin-top: 96px;
  background-color: rgba(8, 10, 15, 0.4);
}

.footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 13px;
}

/* Sub-page layouts (About & Contact) */
.page-header-block {
  text-align: center;
  padding: 60px 0 40px 0;
  border-bottom: 1px solid var(--border-rule);
  margin-bottom: 48px;
}

.page-title {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto;
  display: block;
}

.legal-content {
  font-size: 16px;
  color: var(--text-primary);
  line-height: 1.8;
}

.legal-content p {
  margin-bottom: 24px;
  font-weight: 400;
  color: var(--text-secondary);
}

.legal-content h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 36px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-rule);
}

.legal-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px 0;
}

/* Network section (About page) */
.network-section {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 2px solid var(--border-rule);
}

.network-section-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin: 0 0 6px;
}

.network-section-sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 28px;
}

.network-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.network-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 28px 16px;
  border-radius: 14px;
  border: 1px solid var(--border-rule);
  background: rgba(255,255,255,0.03);
  text-decoration: none;
  transition: all 0.25s ease;
}

.network-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  background: rgba(255,255,255,0.06);
}

.network-card img {
  display: block;
  width: auto;
  max-width: 200px;
}

.network-card-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 4px;
}

.network-card-host {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.network-card-desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 12px 0 0 0;
  text-align: center;
}

@media (max-width: 639px) {
  .network-grid {
    grid-template-columns: 1fr;
  }
}

/* Contact layout */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 80px;
}

.contact-info-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-rule);
  border-radius: 6px;
  padding: 32px;
  height: fit-content;
}

.contact-row {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-row:last-child {
  margin-bottom: 0;
}

.contact-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-gold);
  flex-shrink: 0;
}

.contact-row-title {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.contact-row-body {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-row-body a {
  color: var(--accent-gold);
  text-decoration: none;
}

.contact-row-body a:hover {
  text-decoration: underline;
}

.contact-form {
  background-color: var(--bg-card);
  border: 1px solid var(--border-rule);
  border-radius: 6px;
  padding: 40px;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  background-color: rgba(8, 10, 15, 0.5);
  border: 1px solid var(--border-rule-bright);
  border-radius: 4px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 10px rgba(234, 179, 8, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* RTL Helpers - Fully semantic */
html[dir="rtl"] {
  text-align: right;
}

/* LTR Specific overrides */
html[dir="ltr"] .site-header-nav {
  flex-direction: row;
}

/* Responsive adjustments */
@media (max-width: 850px) {
  .hero-title {
    font-size: 40px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .ecosystem-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* Dataset Card Hover Styles */
.dataset-card:hover {
  background-color: rgba(255, 255, 255, 0.04) !important;
  border-color: var(--border-rule-bright) !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(212, 175, 55, 0.03);
}

/* HUD-style category summary cards */
.summary-hud-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 48px;
}

@media (max-width: 760px) {
  .summary-hud-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}

.hud-summary-card {
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto auto;
  gap: 4px;
  justify-items: center;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  padding: 22px 14px 18px 14px;
  background:
    linear-gradient(180deg, rgba(212, 175, 55, 0.03) 0%, rgba(212, 175, 55, 0) 60%),
    rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-rule-subtle);
  border-radius: 4px;
  backdrop-filter: blur(6px);
  overflow: hidden;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease, background 0.28s ease;
  isolation: isolate;
}

.hud-summary-card::before {
  /* faint scanline / grid overlay */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
  mask-image: radial-gradient(circle at 50% 0%, black, transparent 70%);
}

.hud-summary-card::after {
  /* accent top rail */
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
  opacity: 0.55;
  transition: opacity 0.28s ease;
}

.hud-corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--accent-gold);
  border-style: solid;
  border-width: 0;
  opacity: 0.65;
  transition: opacity 0.28s ease, width 0.28s ease, height 0.28s ease;
}
.hud-corner--tl { top: 4px; left: 4px; border-top-width: 1px; border-left-width: 1px; }
.hud-corner--tr { top: 4px; right: 4px; border-top-width: 1px; border-right-width: 1px; }
.hud-corner--bl { bottom: 4px; left: 4px; border-bottom-width: 1px; border-left-width: 1px; }
.hud-corner--br { bottom: 4px; right: 4px; border-bottom-width: 1px; border-right-width: 1px; }

.hud-summary-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--accent-gold);
  margin-bottom: 4px;
  filter: drop-shadow(0 0 6px rgba(212, 175, 55, 0.12));
}
.hud-summary-icon svg { width: 100%; height: 100%; display: block; }

.hud-summary-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hud-summary-count {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.05;
  letter-spacing: -0.5px;
  text-shadow: 0 0 18px rgba(212, 175, 55, 0.18);
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  justify-content: center;
}

.hud-summary-unit {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  text-shadow: none;
}

.hud-summary-rows {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-emerald);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.hud-summary-card:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 175, 55, 0.55);
  background:
    linear-gradient(180deg, rgba(212, 175, 55, 0.06) 0%, rgba(212, 175, 55, 0) 70%),
    rgba(255, 255, 255, 0.03);
  box-shadow:
    0 10px 28px rgba(0, 0, 0, 0.5),
    0 0 24px rgba(212, 175, 55, 0.08);
}
.hud-summary-card:hover .hud-corner { opacity: 1; width: 16px; height: 16px; }
.hud-summary-card:hover::after { opacity: 1; }
.hud-summary-card:hover .hud-summary-icon { filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.35)); }
.hud-summary-card:focus-visible { outline: 1px solid var(--accent-gold); outline-offset: 2px; }

/* Scroll-to-top floating button */
.scroll-top-btn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 10, 15, 0.85);
  border: 1px solid var(--border-rule);
  color: var(--accent-gold);
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  backdrop-filter: blur(8px);
  z-index: 200;
  padding: 0;
}

.scroll-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.scroll-top-btn:hover {
  background: rgba(212, 175, 55, 0.12);
  border-color: var(--accent-gold);
}

[dir="rtl"] .scroll-top-btn {
  right: auto;
  left: 28px;
}