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

:root {
  /* === Obsidian Lux Palette === */
  --bg-primary: #09090b;
  --bg-secondary: #18181b;
  --bg-card: rgba(24, 24, 27, 0.7);
  --bg-card-hover: rgba(39, 39, 42, 0.8);
  --border-color: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(168, 85, 247, 0.35);
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;

  --accent-red: #a855f7;
  --accent-red-dark: #7c3aed;
  --accent-red-light: #c084fc;
  --accent-red-deep: #6d28d9;
  --accent-green: #34d399;
  --accent-rose: #f472b6;
  --accent-amber: #f59e0b;

  --glow-red: rgba(168, 85, 247, 0.1);
  --glow-red-dark: rgba(124, 58, 237, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --glow-color: rgba(168, 85, 247, 0.04);
  --glow-color-inner: rgba(168, 85, 247, 0.08);
  --glow-size: 120px;
  --glow-opacity: 0;
  --x: 50%;
  --y: 50%;

  --navbar-bg: rgba(9, 9, 11, 0.8);
  --navbar-bg-scrolled: rgba(9, 9, 11, 0.95);
  --navbar-shadow: 0 1px 0 rgba(255,255,255,0.04), 0 4px 30px rgba(0,0,0,0.5);
  --nav-link-hover-bg: rgba(168, 85, 247, 0.06);
  --nav-link-hover-border: rgba(168, 85, 247, 0.12);
  --nav-link-active-bg: rgba(168, 85, 247, 0.1);
  --nav-link-active-border: rgba(168, 85, 247, 0.25);
  --nav-social-hover-bg: rgba(168, 85, 247, 0.08);
  --nav-social-hover-border: rgba(168, 85, 247, 0.2);
  --nav-mobile-bg: rgba(9, 9, 11, 0.98);
  --search-bg: rgba(24, 24, 27, 0.6);
  --search-focus-ring: rgba(168, 85, 247, 0.12);
  --search-focus-shadow: 0 0 0 4px rgba(168, 85, 247, 0.08);
  --diff-btn-bg: rgba(24, 24, 27, 0.6);
  --diff-btn-hover-border: rgba(168, 85, 247, 0.3);
  --diff-btn-hover-bg: rgba(168, 85, 247, 0.06);
  --diff-btn-active-bg: rgba(168, 85, 247, 0.12);
  --diff-btn-active-shadow: 0 0 20px rgba(168, 85, 247, 0.1);
  --card-gradient: rgba(168, 85, 247, 0.03);
  --card-shadow-hover: 0 12px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(168, 85, 247, 0.1);
  --favicon-bg: rgba(255,255,255,0.04);
  --page-btn-bg: rgba(24, 24, 27, 0.6);
  --page-btn-hover-border: rgba(168, 85, 247, 0.3);
  --page-btn-hover-bg: rgba(168, 85, 247, 0.06);
  --page-btn-hover-shadow: 0 4px 20px rgba(0,0,0,0.3);
  --page-btn-active-bg: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(124, 58, 237, 0.15));
  --page-btn-active-border: rgba(168, 85, 247, 0.4);
  --page-btn-active-shadow: 0 0 20px rgba(168, 85, 247, 0.12);
  --category-count-bg: rgba(168, 85, 247, 0.06);
  --category-count-border: rgba(168, 85, 247, 0.15);
  --hero-badge-bg: rgba(168, 85, 247, 0.06);
  --hero-badge-border: rgba(168, 85, 247, 0.2);
  --scroll-top-bg: rgba(24, 24, 27, 0.8);
  --scroll-top-border: rgba(168, 85, 247, 0.2);
  --scroll-top-hover-bg: rgba(168, 85, 247, 0.12);
  --scroll-track: #09090b;
  --scroll-thumb: linear-gradient(#6d28d9, #a855f7);
  --modal-overlay-bg: rgba(0, 0, 0, 0.7);
  --modal-shadow: 0 25px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.06);
  --modal-close-hover-bg: rgba(244, 114, 182, 0.1);
  --modal-close-hover-border: rgba(244, 114, 182, 0.25);
  --modal-tag-bg: rgba(168, 85, 247, 0.08);
  --modal-tag-border: rgba(168, 85, 247, 0.18);
  --footer-link-bg: rgba(168, 85, 247, 0.05);
  --footer-link-border: rgba(168, 85, 247, 0.12);
  --footer-link-hover-bg: rgba(168, 85, 247, 0.1);
  --footer-link-hover-border: rgba(168, 85, 247, 0.3);
  --footer-link-hover-shadow: 0 4px 20px rgba(168, 85, 247, 0.08);
  --bg-grid-glow1: rgba(168, 85, 247, 0.04);
  --bg-grid-glow2: rgba(124, 58, 237, 0.03);
  --bg-grid-glow3: rgba(168, 85, 247, 0.02);
  --bg-grid-line: rgba(255, 255, 255, 0.02);
  --orb3-bg: rgba(52, 211, 153, 0.05);
}


/* ===== Skip Navigation ===== */
.skip-nav {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 12px 24px;
  background: var(--accent-red);
  color: #fff;
  border-radius: 0 0 8px 8px;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.3s;
}
.skip-nav:focus {
  top: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ===== Mouse-Follow Glow ===== */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: var(--glow-opacity);
  background: radial-gradient(
    circle var(--glow-size) at var(--x) var(--y),
    var(--glow-color-inner),
    var(--glow-color) 40%,
    transparent 70%
  );
  will-change: opacity;
  transition: opacity 0.4s ease;
}

/* Hover-amplify: glow brightens near interactive elements */
body.glow-hover::before {
  --glow-color: rgba(168, 85, 247, 0.08);
  --glow-color-inner: rgba(168, 85, 247, 0.16);
}

/* Disable glow on specific pages */
body.no-glow::before {
  display: none;
}

/* Disable glow on touch-only devices */
@media (hover: none) {
  body::before {
    display: none;
  }
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--navbar-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar.scrolled {
  background: var(--navbar-bg-scrolled);
  box-shadow: var(--navbar-shadow);
}

.nav-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  flex-shrink: 0;
  transition: var(--transition);
}

.nav-logo:hover {
  color: var(--accent-red);
}



.nav-social {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: auto;
}

.nav-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
  border: 1px solid transparent;
}

.nav-social a:hover {
  color: var(--accent-red);
  background: var(--nav-social-hover-bg);
  border-color: var(--nav-social-hover-border);
}

/* Theme Toggle Button */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.15rem;
  transition: var(--transition);
  flex-shrink: 0;
  line-height: 1;
  padding: 0;
}

.theme-toggle:hover {
  color: var(--accent-red);
  background: var(--nav-social-hover-bg);
  border-color: var(--nav-social-hover-border);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent-red);
  outline-offset: 2px;
}



/* ===== Animated Background ===== */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    radial-gradient(
      circle at 20% 30%,
      var(--bg-grid-glow1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 70%,
      var(--bg-grid-glow2) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 50% 50%,
      var(--bg-grid-glow3) 0%,
      transparent 60%
    );
  pointer-events: none;
}

.bg-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--bg-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid-line) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black, transparent);
}

/* ===== Floating Orbs ===== */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
  animation: float 20s ease-in-out infinite;
}
.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--glow-red);
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}
.orb-2 {
  width: 350px;
  height: 350px;
  background: var(--glow-red-dark);
  bottom: -80px;
  right: -80px;
  animation-delay: -7s;
}
.orb-3 {
  width: 250px;
  height: 250px;
  background: var(--orb3-bg);
  top: 50%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.05);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.95);
  }
}

/* ===== Main Container ===== */
.container {
  position: relative;
  z-index: 1;
  max-width: 1300px;
  margin: 0 auto;
  padding: 80px 24px 80px;
}

/* ===== Hero Header ===== */
.hero {
  text-align: center;
  padding: 60px 0 50px;
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 50px;
  background: var(--hero-badge-bg);
  border: 1px solid var(--hero-badge-border);
  color: var(--accent-red);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4);
  }
  50% {
    opacity: 0.8;
    box-shadow: 0 0 0 8px rgba(52, 211, 153, 0);
  }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(
    135deg,
    var(--text-primary) 0%,
    var(--accent-red) 50%,
    var(--accent-red-dark) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
}

/* ===== Search Bar ===== */
.search-wrapper {
  max-width: 560px;
  margin: 0 auto 20px;
  position: relative;
  display: flex;
  align-items: center;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--search-bg);
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.search-wrapper:focus-within {
  border-color: var(--accent-red);
  box-shadow:
    0 0 0 4px var(--search-focus-ring),
    0 8px 32px var(--search-focus-shadow);
}

.search-wrapper .search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: color var(--transition);
  pointer-events: none;
  flex-shrink: 0;
}

.search-wrapper:focus-within .search-icon {
  color: var(--accent-red);
}

.search-input {
  flex: 1;
  padding: 16px 0 16px 52px;
  border-radius: 50px 0 0 50px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: "Inter", sans-serif;
  font-size: 1rem;
  outline: none;
  min-width: 0;
}

.search-input::placeholder {
  color: var(--text-muted);
}

/* ===== Advanced Search Toggle (inside search bar) ===== */
.adv-search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-right: 5px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
  position: relative;
  padding: 0;
}

.adv-search-toggle svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.adv-search-toggle:hover {
  color: var(--accent-red);
  background: rgba(168, 85, 247, 0.06);
  border-color: rgba(168, 85, 247, 0.12);
}

.adv-search-toggle[aria-expanded="true"] {
  color: var(--accent-red);
  background: rgba(168, 85, 247, 0.1);
  border-color: rgba(168, 85, 247, 0.3);
}

.adv-search-badge {
  display: none;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: var(--radius-sm);
  background: var(--accent-red);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  line-height: 1;
}

.adv-search-badge.visible {
  display: inline-flex;
}

/* Panel */
.adv-search-panel {
  max-width: 700px;
  margin: 0 auto;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.3s ease,
              margin-top 0.3s ease;
  margin-top: 0;
}

.adv-search-panel.open {
  max-height: 2500px;
  opacity: 1;
  margin-top: 16px;
}

.adv-search-inner {
  padding: 20px 24px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
}

.adv-search-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.adv-search-divider {
  height: 1px;
  background: var(--border-color);
  margin: 16px 0;
}

.adv-section-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.adv-search-actions {
  display: flex;
  gap: 8px;
}

.adv-action-btn {
  padding: 5px 14px;
  border-radius: 50px;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-family: "Inter", sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.adv-action-btn:hover {
  color: var(--accent-red);
  border-color: var(--border-hover);
  background: rgba(239, 68, 68, 0.06);
}

/* Filter Chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 4px;
}

.filter-chips::-webkit-scrollbar,
.active-filters-list::-webkit-scrollbar {
  width: 6px;
}
.filter-chips::-webkit-scrollbar-track,
.active-filters-list::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 10px;
}
.filter-chips::-webkit-scrollbar-thumb,
.active-filters-list::-webkit-scrollbar-thumb {
  background: rgba(168, 85, 247, 0.3);
  border-radius: 10px;
}
.filter-chips::-webkit-scrollbar-thumb:hover,
.active-filters-list::-webkit-scrollbar-thumb:hover {
  background: rgba(168, 85, 247, 0.5);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  background: rgba(24, 24, 27, 0.5);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: "Inter", sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
}

.filter-chip:hover {
  border-color: var(--border-hover);
  color: var(--accent-red);
  background: rgba(168, 85, 247, 0.06);
  transform: translateY(-1px);
}

.filter-chip.active {
  background: rgba(168, 85, 247, 0.12);
  border-color: var(--accent-red);
  color: var(--text-primary);
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.1);
}

.filter-chip .chip-icon {
  font-size: 0.9rem;
  line-height: 1;
}

.filter-chip .chip-count {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 7px;
  border-radius: 10px;
  transition: var(--transition);
}

.filter-chip.active .chip-count {
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-red-light);
}

/* Active Filters Bar */
.active-filters-bar {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  margin-top: 10px;
  border-radius: var(--radius-sm);
  background: rgba(168, 85, 247, 0.04);
  border: 1px solid rgba(168, 85, 247, 0.1);
  flex-wrap: wrap;
}

.active-filters-bar.visible {
  display: flex;
}

.active-filters-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.active-filters-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
  max-height: 140px;
  overflow-y: auto;
  padding-right: 4px;
}

.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 50px;
  background: rgba(168, 85, 247, 0.08);
  border: 1px solid rgba(168, 85, 247, 0.18);
  color: var(--accent-red);
  font-family: "Inter", sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.active-filter-tag:hover {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.35);
}

.active-filter-tag .remove-tag {
  font-size: 0.8rem;
  line-height: 1;
  opacity: 0.7;
}

.active-filters-clear {
  padding: 5px 14px;
  border-radius: 50px;
  background: transparent;
  border: 1px solid rgba(168, 85, 247, 0.18);
  color: var(--accent-red);
  font-family: "Inter", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.active-filters-clear:hover {
  background: rgba(168, 85, 247, 0.08);
  border-color: rgba(168, 85, 247, 0.35);
}

/* ===== Difficulty Filters ===== */
.difficulty-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 auto 30px;
  max-width: 800px;
}

.diff-btn {
  background: var(--diff-btn-bg);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.diff-btn:hover {
  border-color: var(--diff-btn-hover-border);
  color: var(--accent-red);
  background: var(--diff-btn-hover-bg);
}

.diff-btn.active {
  background: var(--diff-btn-active-bg);
  border-color: var(--accent-red);
  color: var(--text-primary);
  box-shadow: var(--diff-btn-active-shadow);
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: "JetBrains Mono", monospace;
  background: linear-gradient(135deg, var(--accent-red), var(--accent-red-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* ===== Category Sections ===== */
.category {
  margin-bottom: 48px;
  animation: fadeInUp 0.6s ease-out both;
}

.category:nth-child(2) {
  animation-delay: 0.1s;
}
.category:nth-child(3) {
  animation-delay: 0.15s;
}
.category:nth-child(4) {
  animation-delay: 0.2s;
}
.category:nth-child(5) {
  animation-delay: 0.25s;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.category-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.category-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.category-count {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: "JetBrains Mono", monospace;
  background: var(--category-count-bg);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--category-count-border);
}

/* Category Color Themes */
.cat-breach .category-icon {
  background: rgba(168, 85, 247, 0.12);
  color: var(--accent-red);
}
.cat-encode .category-icon {
  background: rgba(124, 58, 237, 0.12);
  color: var(--accent-red-dark);
}
.cat-osint .category-icon {
  background: rgba(192, 132, 252, 0.12);
  color: var(--accent-red-light);
}
.cat-network .category-icon {
  background: rgba(168, 85, 247, 0.1);
  color: var(--accent-red);
}
.cat-vuln .category-icon {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
}
.cat-hash .category-icon {
  background: rgba(192, 132, 252, 0.12);
  color: var(--accent-red-light);
}
.cat-malware .category-icon {
  background: rgba(124, 58, 237, 0.12);
  color: var(--accent-red-dark);
}
.cat-stego .category-icon {
  background: rgba(168, 85, 247, 0.1);
  color: var(--accent-red);
}
.cat-email .category-icon {
  background: rgba(109, 40, 217, 0.12);
  color: var(--accent-red-deep);
}
.cat-resources .category-icon {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
}
.cat-pentest .category-icon {
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-red);
}
.cat-system .category-icon {
  background: rgba(192, 132, 252, 0.12);
  color: var(--accent-red-light);
}
.cat-thm .category-icon {
  background: rgba(52, 211, 153, 0.12);
  color: var(--accent-green);
}

/* ===== Page Navigation Buttons ===== */
.page-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.page-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-secondary);
  background: var(--page-btn-bg);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  transition: var(--transition);
  cursor: pointer;
}

.page-nav-btn:hover {
  color: var(--accent-red);
  border-color: var(--page-btn-hover-border);
  background: var(--page-btn-hover-bg);
  transform: translateY(-2px);
  box-shadow: var(--page-btn-hover-shadow);
}

.page-nav-btn.active {
  color: #fff;
  background: var(--page-btn-active-bg);
  border-color: var(--page-btn-active-border);
  box-shadow: var(--page-btn-active-shadow);
}

/* ===== Link Cards Grid ===== */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 14px;
}

.link-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
  overflow: hidden;
}

.link-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    transparent 40%,
    var(--card-gradient)
  );
  opacity: 0;
  transition: opacity var(--transition);
}

.link-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
}

.link-card:hover::before {
  opacity: 1;
}

.link-card:hover .card-arrow {
  opacity: 1;
  transform: translate(0, -50%);
}

.link-favicon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--favicon-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.link-favicon img {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  object-fit: contain;
}

.link-info {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.link-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.link-domain {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: "JetBrains Mono", monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-arrow {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translate(-6px, -50%);
  opacity: 0;
  color: var(--accent-red);
  transition: var(--transition);
  z-index: 1;
}

.card-arrow svg {
  width: 18px;
  height: 18px;
}

/* ===== No Results ===== */
.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  display: none;
}

.no-results svg {
  width: 60px;
  height: 60px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.no-results.visible {
  display: block;
}

.no-results-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

/* ===== Screen Reader Only ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Scroll to Top ===== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--scroll-top-bg);
  border: 1px solid var(--scroll-top-border);
  backdrop-filter: blur(12px);
  color: var(--accent-red);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

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

.scroll-top:hover {
  background: var(--scroll-top-hover-bg);
  transform: translateY(-3px);
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 48px 20px 28px;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-color);
  margin-top: 20px;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer-author {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.footer-author a {
  color: var(--accent-red);
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition);
}

.footer-author a:hover {
  color: var(--accent-red-dark);
  text-shadow: 0 0 12px rgba(168, 85, 247, 0.4);
}

.footer-role {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.3px;
}

.footer-links {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 50px;
  background: var(--footer-link-bg);
  border: 1px solid var(--footer-link-border);
  color: var(--accent-red);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
}

.footer-links a:hover {
  background: var(--footer-link-hover-bg);
  border-color: var(--footer-link-hover-border);
  transform: translateY(-2px);
  box-shadow: var(--footer-link-hover-shadow);
}


/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Responsive ===== */

@media (max-width: 768px) {
  .container {
    padding: 70px 16px 60px;
  }
  .hero {
    padding: 40px 0 36px;
  }
  .stats-bar {
    gap: 24px;
  }
  .links-grid {
    grid-template-columns: 1fr;
  }
  .category-header {
    flex-wrap: wrap;
  }
  .category-count {
    margin-left: 0;
  }

  /* Advanced Search — Mobile */
  .search-wrapper {
    max-width: 100%;
  }

  .adv-search-panel {
    max-width: 100%;
  }

  .adv-search-inner {
    padding: 14px 14px;
  }

  .filter-chips {
    gap: 6px;
  }

  .filter-chip {
    font-size: 0.68rem;
    padding: 5px 10px;
  }

  .filter-chip .chip-count {
    font-size: 0.6rem;
    padding: 1px 5px;
  }

  .active-filters-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 10px 12px;
    margin-top: 8px;
    min-width: 0;
  }

  .active-filters-label {
    font-size: 0.68rem;
    letter-spacing: 0.8px;
  }

  .active-filters-list {
    width: 100%;
    gap: 5px;
    min-width: 0;
  }

  .active-filter-tag {
    font-size: 0.62rem;
    padding: 3px 8px;
    gap: 3px;
    max-width: 100%;
    min-width: 0;
  }

  .active-filter-tag .remove-tag {
    font-size: 0.7rem;
    flex-shrink: 0;
  }

  .active-filters-clear {
    align-self: flex-end;
    text-align: center;
    padding: 5px 14px;
    font-size: 0.65rem;
    margin-top: 2px;
    flex-shrink: 0;
  }

  .adv-search-section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .active-filters-bar {
    padding: 8px;
    gap: 6px;
  }

  .active-filters-label {
    font-size: 0.6rem;
  }

  .active-filter-tag {
    font-size: 0.58rem;
    padding: 2px 7px;
    gap: 2px;
  }

  .active-filter-tag .remove-tag {
    font-size: 0.65rem;
  }

  .active-filters-clear {
    padding: 5px 10px;
    font-size: 0.6rem;
  }

  .page-nav {
    gap: 8px;
  }

  .page-nav-btn {
    padding: 10px 16px;
    font-size: 0.8rem;
  }
}
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--scroll-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border-radius: 10px;
}

/* ===== Tool Details Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.thm-modal {
  background: var(--bg-secondary);
  color: var(--text-primary);
  width: 90%;
  max-width: 550px;
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
  border: 1px solid var(--border-color);
  box-shadow: var(--modal-shadow);
  transform: scale(0.95) translateY(10px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .thm-modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--modal-close-hover-bg);
  border-color: var(--modal-close-hover-border);
  color: var(--accent-red);
}

.modal-close svg {
  width: 24px;
  height: 24px;
}

.modal-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.2;
}

.modal-subtitle {
  font-size: 0.9rem;
  color: var(--accent-red);
  margin-bottom: 24px;
  font-weight: 500;
}

.modal-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

.modal-skills {
  margin-bottom: 30px;
}

.modal-skills strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.modal-tag {
  background: var(--modal-tag-bg);
  color: var(--accent-red);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  text-transform: lowercase;
  border: 1px solid var(--modal-tag-border);
}

.modal-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  background: linear-gradient(135deg, var(--accent-red), var(--accent-red-dark));
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 14px 24px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.modal-btn:hover {
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.25);
  transform: translateY(-1px);
}

/* ===== Typewriter Animation ===== */
.typewriter {
  display: inline;
  border-right: 3px solid var(--accent-red);
  animation: blink-cursor 0.75s step-end infinite;
}

.typewriter.done {
  border-right-color: transparent;
  animation: none;
}

@keyframes blink-cursor {
  0%,
  100% {
    border-right-color: var(--accent-red);
  }
  50% {
    border-right-color: transparent;
  }
}

/* ===== New Category Themes ===== */
.cat-ai .category-icon {
  background: rgba(124, 58, 237, 0.12);
  color: var(--accent-red-dark);
}
.cat-coding .category-icon {
  background: rgba(168, 85, 247, 0.12);
  color: var(--accent-red);
}
.cat-notes .category-icon {
  background: rgba(168, 85, 247, 0.12);
  color: var(--accent-red);
}
.cat-extensions .category-icon {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
}
.cat-ctf .category-icon {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
}
.cat-writeups .category-icon {
  background: rgba(192, 132, 252, 0.12);
  color: var(--accent-red-light);
}
.cat-tools .category-icon {
  background: rgba(168, 85, 247, 0.12);
  color: var(--accent-red);
}
.cat-general .category-icon {
  background: rgba(124, 58, 237, 0.1);
  color: var(--accent-red-dark);
}