:root {
  --bg-primary: #06080e;
  --bg-secondary: #0c1018;
  --bg-tertiary: #121824;
  --card-bg: rgba(14, 19, 30, 0.8);
  --card-border: rgba(255, 255, 255, 0.07);
  --card-hover: rgba(24, 33, 52, 0.95);

  /* Category colors */
  --five-color: #f472b6;
  --five-glow: rgba(244, 114, 182, 0.25);
  --five-bg: rgba(244, 114, 182, 0.08);
  --five-border: rgba(244, 114, 182, 0.3);

  --three-color: #00f0ff;
  --three-glow: rgba(0, 240, 255, 0.25);
  --three-bg: rgba(0, 240, 255, 0.08);
  --three-border: rgba(0, 240, 255, 0.3);

  --two-color: #a78bfa;
  --two-glow: rgba(167, 139, 250, 0.25);
  --two-bg: rgba(167, 139, 250, 0.08);
  --two-border: rgba(167, 139, 250, 0.3);

  --accent-green: #34d399;
  --accent-amber: #fbbf24;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ====== Background Atmosphere ====== */
.app-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(160px);
  opacity: 0.18;
}
.orb-1 {
  width: 550px; height: 550px;
  background: radial-gradient(circle, var(--five-color), transparent 70%);
  top: -180px; right: 5%;
}
.orb-2 {
  width: 450px; height: 450px;
  background: radial-gradient(circle, var(--three-color), transparent 70%);
  top: 40%; left: -120px;
}
.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--two-color), transparent 70%);
  bottom: -100px; right: 15%;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8) 0%, transparent 75%);
}

/* ====== Header ====== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 8, 14, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--card-border);
}
.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--five-bg), var(--three-bg), var(--two-bg));
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--three-color);
}
.brand-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.badge-tag {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(0, 240, 255, 0.12);
  color: var(--three-color);
  border: 1px solid var(--three-border);
  font-weight: 700;
}
.brand-subtitle {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 1px;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 8px 16px;
  flex: 1;
  max-width: 420px;
  color: var(--text-dim);
  transition: var(--transition);
}
.header-search:focus-within {
  border-color: var(--three-color);
  box-shadow: 0 0 12px rgba(0,240,255,0.15);
}
.header-search input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: inherit;
  font-size: 13px;
  width: 100%;
}
.header-search input::placeholder { color: var(--text-dim); }

.btn-hf {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  flex-shrink: 0;
}
.btn-hf:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}

/* ====== Main ====== */
.main-container {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

/* ====== Summary Bar ====== */
.summary-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 20px 32px;
  box-shadow: 0 12px 36px rgba(0,0,0,0.35);
  position: relative;
  overflow: hidden;
}
.summary-bar::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--five-color), var(--three-color), var(--two-color), transparent);
}
.summary-stat {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 28px;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.summary-stat:hover {
  background: rgba(255,255,255,0.04);
}
.summary-icon {
  font-size: 32px;
  line-height: 1;
}
.summary-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 800;
  line-height: 1.1;
}
.five-icon + div .summary-num { color: var(--five-color); }
.three-icon + div .summary-num { color: var(--three-color); }
.two-icon + div .summary-num { color: var(--two-color); }
.total-icon + div .summary-num { color: var(--accent-green); }
.summary-label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  font-weight: 600;
}
.summary-divider {
  width: 1px;
  height: 48px;
  background: var(--card-border);
  margin: 0 8px;
}

/* ====== Category Sections ====== */
.category-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid;
  position: relative;
  overflow: hidden;
}
.category-header::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.06;
  z-index: 0;
}
.five-header {
  background: var(--five-bg);
  border-color: var(--five-border);
  box-shadow: 0 0 32px var(--five-glow);
}
.five-header::before { background: var(--five-color); }
.three-header {
  background: var(--three-bg);
  border-color: var(--three-border);
  box-shadow: 0 0 32px var(--three-glow);
}
.three-header::before { background: var(--three-color); }
.two-header {
  background: var(--two-bg);
  border-color: var(--two-border);
  box-shadow: 0 0 32px var(--two-glow);
}
.two-header::before { background: var(--two-color); }

.category-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  z-index: 1;
}
.category-emoji {
  font-size: 36px;
  line-height: 1;
}
.category-header h2 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.3px;
}
.five-header h2 { color: var(--five-color); }
.three-header h2 { color: var(--three-color); }
.two-header h2 { color: var(--two-color); }
.category-header p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  max-width: 680px;
}
.category-count {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  white-space: nowrap;
}
.five-header .category-count {
  background: rgba(244,114,182,0.15);
  color: var(--five-color);
  border: 1px solid var(--five-border);
}
.three-header .category-count {
  background: rgba(0,240,255,0.15);
  color: var(--three-color);
  border: 1px solid var(--three-border);
}
.two-header .category-count {
  background: rgba(167,139,250,0.15);
  color: var(--two-color);
  border: 1px solid var(--two-border);
}

/* ====== Dataset Cards Grid ====== */
.datasets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 14px;
}

.dataset-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.dataset-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.dataset-card:hover {
  background: var(--card-hover);
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(0,0,0,0.4);
}
.dataset-card:hover::before {
  opacity: 1;
}
.dataset-card.five-card { border-color: rgba(244,114,182,0.12); }
.dataset-card.five-card:hover { border-color: var(--five-border); }
.dataset-card.five-card::before { background: linear-gradient(90deg, transparent, var(--five-color), transparent); }

.dataset-card.three-card { border-color: rgba(0,240,255,0.12); }
.dataset-card.three-card:hover { border-color: var(--three-border); }
.dataset-card.three-card::before { background: linear-gradient(90deg, transparent, var(--three-color), transparent); }

.dataset-card.two-card { border-color: rgba(167,139,250,0.12); }
.dataset-card.two-card:hover { border-color: var(--two-border); }
.dataset-card.two-card::before { background: linear-gradient(90deg, transparent, var(--two-color), transparent); }

.card-top-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.card-finger-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.badge-five { background: rgba(244,114,182,0.15); color: var(--five-color); border: 1px solid var(--five-border); }
.badge-three { background: rgba(0,240,255,0.15); color: var(--three-color); border: 1px solid var(--three-border); }
.badge-two { background: rgba(167,139,250,0.15); color: var(--two-color); border: 1px solid var(--two-border); }

.card-task-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  flex: 1;
}
.card-hand-type {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.card-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}
.card-meta-row span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-actions {
  display: flex;
  gap: 8px;
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 14px;
}
.btn-card {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  flex: 1;
  justify-content: center;
}
.btn-open {
  background: rgba(255,255,255,0.06);
  border-color: var(--card-border);
  color: var(--text-main);
}
.btn-open:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.2);
}
.btn-clone {
  background: rgba(52, 211, 153, 0.1);
  border-color: rgba(52, 211, 153, 0.3);
  color: var(--accent-green);
}
.btn-clone:hover {
  background: rgba(52, 211, 153, 0.2);
  border-color: rgba(52, 211, 153, 0.5);
}

/* ====== Empty State ====== */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  color: var(--text-dim);
  font-size: 15px;
}

/* ====== Toast ====== */
.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--accent-green);
  color: #021a0e;
  font-weight: 700;
  font-size: 13px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 28px rgba(0,0,0,0.5);
  z-index: 2000;
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ====== Responsive ====== */
@media (max-width: 960px) {
  .summary-bar {
    flex-wrap: wrap;
    gap: 12px;
    padding: 16px 20px;
  }
  .summary-divider { display: none; }
  .summary-stat { padding: 8px 16px; }
  .header-container { flex-wrap: wrap; }
  .header-search { max-width: 100%; order: 3; }
  .category-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .datasets-grid { grid-template-columns: 1fr; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.dataset-card {
  animation: fadeInUp 0.4s ease forwards;
}