/* ============================================================
   BUILD EXPLORER — builds.styles.css
   Dark gaming theme | Cyan accent — matches Once Human Data site
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg-base:        #0d0d0d;
  --bg-surface:     #111111;
  --bg-card:        #132239;
  --bg-card-hover:  #1a2e4a;
  --border:         #1e2a3a;
  --border-glow:    #06b6d4;

  --accent-primary: #06b6d4;   /* cyan */
  --accent-bright:  #22d3ee;
  --accent-dim:     #0891b2;
  --accent-purple:  #7c3aed;   /* secondary */

  --text-primary:   #e8e8f0;
  --text-muted:     #6b6b8a;
  --text-label:     #9090b0;

  /* tag palette */
  --tag-frostvortex:     #06b6d4;
  --tag-burn:            #ef4444;
  --tag-powersurge:      #eab308;
  --tag-shrapnel:        #f97316;
  --tag-fastgunner:      #22c55e;
  --tag-unstablebomber:  #f34763;
  --tag-fortresswarfare: #3b82f6;
  --tag-thebullseye:     #a855f7;
  --tag-bounce:          #14b8a6;
  --tag-bluntdmg:        #c2915e;
  --tag-nothing:         #6b7280;
  --tag-default:         #4b5563;

  --radius-card:  14px;
  --radius-btn:   8px;
  --radius-tag:   20px;
  --transition:   0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 1rem;
}

/* Back button */
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0;
  background: transparent;
  border: none;
  color: var(--accent-primary);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-back:hover {
  color: #ffffff;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  justify-content: center;
}

.brand-icon {
  font-size: 1.3rem;
  color: var(--accent-primary);
  filter: drop-shadow(0 0 6px rgba(6, 182, 212, 0.6));
}

.brand-title {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-primary);
  text-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
}

/* ---------- Tier List CTA ---------- */
.btn-tier-list {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.5rem 1.4rem;
  background: transparent;
  border: 1px solid #FFBF00;
  color: #FFBF00;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-btn);
  transition: background var(--transition), box-shadow var(--transition);
}
.btn-tier-list:hover {
  background: rgba(255, 191, 0, 0.12);
  box-shadow: 0 0 16px rgba(255, 191, 0, 0.3);
}

.hero-disclaimer {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  opacity: 0.7;
}

/* ---------- Create Build CTA ---------- */
.btn-create {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  background: transparent;
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  border-radius: var(--radius-btn);
  transition: background var(--transition), box-shadow var(--transition), color var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-create:hover {
  background: rgba(6, 182, 212, 0.12);
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.3);
  color: var(--accent-bright);
}

/* ---------- Page Title ---------- */
.page-title-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.page-title-icon {
  font-size: 2rem;
  color: var(--accent-primary);
  filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.7));
}

.page-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-primary);
  text-shadow: 0 0 30px rgba(6, 182, 212, 0.5);
}

/* ---------- Guide Separator ---------- */
.guide-separator {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0 0.75rem;
  margin-top: 0.5rem;
}

.guide-separator::before,
.guide-separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.guide-separator span {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ---------- Hero / Search ---------- */
.hero {
  max-width: 1280px;
  margin: 2.5rem auto 0;
  padding: 0 2rem;
  text-align: center;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.search-wrap {
  position: relative;
  max-width: 520px;
  margin: 0 auto;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.8rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  pointer-events: none;
  color: var(--text-muted);
}

/* ---------- Filters ---------- */
.filter-section {
  max-width: 1280px;
  margin: 2rem auto 0;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.filter-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  min-width: 105px;
  padding-top: 0.4rem;
  flex-shrink: 0;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.filter-btn {
  padding: 0.35rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-tag);
  color: var(--text-label);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), box-shadow var(--transition);
}

.filter-btn:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(6, 182, 212, 0.12);
  border-color: var(--accent-primary);
  color: var(--accent-bright);
  box-shadow: 0 0 8px rgba(6, 182, 212, 0.25);
}

/* ---------- Results Bar ---------- */
.results-bar {
  max-width: 1280px;
  margin: 1.75rem auto 0;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
}

#resultsCount {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.btn-reset {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.25rem 0.75rem;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}

.btn-reset:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ---------- Card Grid ---------- */
.card-grid {
  max-width: 1280px;
  margin: 1.75rem auto 4rem;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

/* ---------- Build Card ---------- */
.build-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition),
              box-shadow var(--transition);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.build-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: 0 8px 32px rgba(6, 182, 212, 0.15),
              0 0 0 1px rgba(6, 182, 212, 0.08);
}

/* Card image placeholder */
.card-image {
  width: 100%;
  background: linear-gradient(135deg, #0d1a2a 0%, #0a111a 100%);
  position: relative;
  /* no fixed aspect-ratio — images define their own height */
}

.card-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 40%,
    rgba(6, 182, 212, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* When there IS an image, let it flow naturally */
.card-img {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 1;
}

/* Fallback (no image / broken image) — fixed height box with icon */
.card-img-fallback {
  display: none;
  width: 100%;
  aspect-ratio: 16 / 9;
  align-items: center;
  justify-content: center;
}

/* Cards without an image still get a fixed-size placeholder */
.card-image:not(:has(.card-img)) {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-image-icon {
  font-size: 2.8rem;
  opacity: 0.55;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.3));
}

/* Type badge on image */
.card-type-badge {
  position: absolute;
  bottom: 0.6rem;
  right: 0.6rem;
  background: rgba(8, 8, 16, 0.85);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  color: var(--accent-primary);
  backdrop-filter: blur(4px);
}

/* Card body */
.card-body {
  padding: 0.9rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.card-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

/* ---------- Tags ---------- */
.tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-tag);
  border: 1px solid transparent;
}

/* Tag colour map — matches JS TAG_CLASS */
.tag-frostvortex     { background: rgba(6,182,212,0.12);   border-color: rgba(6,182,212,0.4);   color: var(--tag-frostvortex); }
.tag-burn            { background: rgba(249,115,22,0.12);  border-color: rgba(249,115,22,0.4);  color: var(--tag-burn); }
.tag-powersurge      { background: rgba(234,179,8,0.12);   border-color: rgba(234,179,8,0.4);   color: var(--tag-powersurge); }
.tag-shrapnel        { background: rgba(239,68,68,0.12);   border-color: rgba(239,68,68,0.4);   color: var(--tag-shrapnel); }
.tag-fastgunner      { background: rgba(34,197,94,0.12);   border-color: rgba(34,197,94,0.4);   color: var(--tag-fastgunner); }
.tag-unstablebomber  { background: rgba(244,63,94,0.12);   border-color: rgba(244,63,94,0.4);   color: var(--tag-unstablebomber); }
.tag-fortresswarfare { background: rgba(59,130,246,0.12);  border-color: rgba(59,130,246,0.4);  color: var(--tag-fortresswarfare); }
.tag-thebullseye     { background: rgba(168,85,247,0.12);  border-color: rgba(168,85,247,0.4);  color: var(--tag-thebullseye); }
.tag-bounce          { background: rgba(20,184,166,0.12);  border-color: rgba(20,184,166,0.4);  color: var(--tag-bounce); }
.tag-bluntdmg        { background: rgba(194,145,94,0.12);  border-color: rgba(194,145,94,0.4);  color: var(--tag-bluntdmg); }
.tag-nothing         { background: rgba(107,114,128,0.12); border-color: rgba(107,114,128,0.4); color: var(--tag-nothing); }
.tag-default         { background: rgba(75,85,99,0.15);    border-color: rgba(75,85,99,0.5);    color: #9ca3af; }

/* ---------- Card Info Dot ---------- */
.card-info-dot {
  position: absolute;
  top: 0.4rem;
  right: 0.4rem;
  z-index: 2;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(9, 153, 178, 0.85);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  font-style: italic;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* ---------- Weapon Tooltip ---------- */
.weapon-tooltip {
  position: fixed;
  z-index: 400;
  max-width: 280px;
  background: #0d1a24;
  border: 1px solid var(--accent-primary);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.65), 0 0 12px rgba(9, 153, 178, 0.2);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  pointer-events: none;
}

.tooltip-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-bright);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35rem;
  margin-bottom: 0.4rem;
}

.tooltip-effects {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.tooltip-effect {
  font-size: 0.76rem;
  color: var(--text-label);
  line-height: 1.5;
  padding-left: 0.6rem;
  border-left: 2px solid var(--accent-dim);
}

.tooltip-effect--keyword {
  color: #fbbf24;
  border-left-color: #d97706;
  font-weight: 600;
}

/* ---------- Empty State ---------- */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
  max-width: 400px;
  margin: 2rem auto;
}

.empty-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.empty-state p {
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.hidden { display: none !important; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 4rem;
  padding: 2.5rem;
  text-align: center;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .site-header { padding: 0 1rem; }
  .brand-title  { font-size: 1rem; letter-spacing: 0.08em; }
  .btn-create, .btn-back { font-size: 0.78rem; padding: 0.4rem 0.7rem; }

  .hero,
  .filter-section,
  .results-bar,
  .card-grid { padding: 0 1rem; }

  .filter-group  { flex-direction: column; gap: 0.5rem; }
  .filter-label  { min-width: unset; padding-top: 0; }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem;
  }
}