/* ===== CSS Variables ===== */
:root {
  --bg-dark: #0a0e17;
  --bg-card: rgba(25, 32, 50, 0.7);
  --bg-card-solid: #192032;
  --primary: #7c6ff0;
  --primary-10: rgba(124, 111, 240, 0.1);
  --primary-20: rgba(124, 111, 240, 0.2);
  --accent: #06b6d4;
  --accent2: #f59e0b;
  --gold: #f59e0b;
  --gold-10: rgba(245, 158, 11, 0.1);
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --border: rgba(124, 111, 240, 0.3);
  --glow: 0 0 20px rgba(124, 111, 240, 0.4);
  --glow-gold: 0 0 20px rgba(245, 158, 11, 0.3);
  --radius: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }

img { max-width: 100%; height: auto; }

/* ===== Loader ===== */
.loader {
  position: fixed; inset: 0;
  background: var(--bg-dark);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  transition: opacity 0.4s ease;
}
.loader.hidden { opacity: 0; pointer-events: none; }

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ===== Particle Background ===== */
#particles {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -1;
  background: radial-gradient(ellipse at bottom, #1e293b 0%, var(--bg-dark) 70%);
}

/* ===== Glass Navigation ===== */
.glass-nav {
  position: sticky; top: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 2rem;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  gap: 1rem;
}

.logo {
  display: flex; align-items: center; gap: 0.5rem;
  font-weight: 700; font-size: 1.2rem;
  cursor: pointer;
  user-select: none;
}

.logo span {
  background: linear-gradient(135deg, var(--primary), var(--accent), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Search Box ===== */
.search-box {
  position: relative;
  width: 40%;
  min-width: 240px;
  max-width: 480px;
}

.search-box input {
  width: 100%;
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: var(--glow);
}

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

.search-hints {
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 0.4rem;
  max-height: 220px;
  overflow-y: auto;
  display: none;
  z-index: 50;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.search-hints.show { display: block; }

.search-hints div {
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.search-hints div:hover {
  background: var(--primary-20);
  padding-left: 1.25rem;
}

/* ===== Role Select ===== */
.user-role select {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  outline: none;
}

.user-role select:hover,
.user-role select:focus {
  border-color: var(--primary);
}

/* ===== Scenes ===== */
.scenes {
  padding: 1.25rem 2rem 0.75rem;
}

.scenes h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.scene-tags {
  display: flex; gap: 0.6rem; flex-wrap: wrap;
}

.scene-tag {
  padding: 0.35rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.scene-tag:hover, .scene-tag.active {
  background: linear-gradient(135deg, var(--primary-20), rgba(6,182,212,0.2));
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* ===== Categories ===== */
.categories {
  display: flex; gap: 0.4rem;
  padding: 0.75rem 2rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.categories::-webkit-scrollbar { display: none; }

.cat-btn {
  padding: 0.45rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-dim);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
  font-size: 0.85rem;
}

.cat-btn:hover, .cat-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: var(--glow);
}

/* ===== Tool Cards Grid ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.15rem;
  padding: 0.5rem 2rem 2rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  animation: cardIn 0.35s ease both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.tool-card::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(99,102,241,0.08) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--glow);
}

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

.ad-container {
  padding: 0.5rem 2rem;
  display: flex;
  justify-content: center;
  min-height: 90px;
}

.ad-container ins {
  display: block;
}

.ad-container.ad-banner {
  min-height: 90px;
}

.tool-header {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.tool-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
  flex-shrink: 0;
}

.tool-name {
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.3;
}

.tool-desc {
  color: var(--text-dim);
  font-size: 0.88rem;
  margin-bottom: 0.65rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-tags {
  display: flex; gap: 0.35rem; flex-wrap: wrap;
  margin-bottom: 0.85rem;
}

.tag {
  padding: 0.2rem 0.55rem;
  background: var(--primary-15, rgba(99,102,241,0.15));
  border-radius: 6px;
  font-size: 0.72rem;
  color: var(--accent);
}

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

.tool-link {
  font-size: 0.88rem;
  display: inline-flex; align-items: center; gap: 0.2rem;
}

.tool-relation {
  font-size: 0.78rem;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  transition: var(--transition);
}

.tool-relation:hover {
  background: rgba(6,182,212,0.2);
  color: var(--accent);
}

/* ===== Relations Panel ===== */
.relations-panel {
  padding: 1rem 2rem 2rem;
  background: rgba(15, 23, 42, 0.6);
  border-top: 1px solid var(--border);
}

.relations-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.relations-header h3 {
  font-size: 1rem;
}

.relations-close {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
}

.relations-close:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.relation-chain {
  display: flex; gap: 1rem; overflow-x: auto;
  padding: 0.75rem 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.relation-chain::-webkit-scrollbar { display: none; }

.relation-item {
  min-width: 200px;
  max-width: 260px;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
  transition: var(--transition);
  flex-shrink: 0;
}

.relation-item:hover {
  transform: translateX(4px);
  border-left-color: var(--accent2);
}

/* ===== Ad Containers ===== */
.ad-container {
  padding: 0.5rem 2rem;
  display: flex; justify-content: center;
}

.ad-container ins {
  display: block;
}

/* ===== WeChat Float ===== */
.wechat-float {
  position: fixed;
  bottom: 2rem; right: 2rem;
  display: flex; align-items: center; gap: 0.65rem;
  padding: 0.65rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glow);
  z-index: 200;
  transition: var(--transition);
  cursor: pointer;
  backdrop-filter: blur(8px);
}

.wechat-float:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(6,182,212,0.5);
}

.wechat-icon { font-size: 1.2rem; }

.wechat-tip {
  font-size: 0.78rem;
  color: var(--text-dim);
  white-space: nowrap;
}

.wechat-qrcode {
  position: absolute;
  bottom: 100%; right: 0;
  margin-bottom: 0.75rem;
  padding: 0.5rem;
  background: white;
  border-radius: var(--radius);
  display: none;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.wechat-float:hover .wechat-qrcode {
  display: block;
  animation: fadeInUp 0.3s ease;
}

.wechat-qrcode img {
  width: 120px;
  height: 120px;
  display: block;
}

/* ===== Scroll to Top ===== */
.scroll-top {
  position: fixed;
  bottom: 2rem; left: 2rem;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-card);
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 150;
  backdrop-filter: blur(8px);
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top:hover {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: var(--glow);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
footer {
  text-align: center;
  padding: 1.5rem 2rem;
  color: var(--text-dim);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.float { animation: float 3s ease-in-out infinite; }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  animation: fadeIn 0.2s ease;
}

.modal-overlay[hidden] { display: none; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  width: 90%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  animation: modalIn 0.25s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.modal-header h3 { font-size: 1.1rem; }

.modal-close {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: 28px; height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: var(--glow);
}

.submit-btn {
  width: 100%;
  padding: 0.65rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.submit-btn:hover {
  box-shadow: var(--glow);
  transform: translateY(-1px);
}

.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.75rem;
}

/* ===== Empty State ===== */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-dim);
}

.empty-state h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.empty-state p { font-size: 0.9rem; }

/* ===== Status Badge ===== */
.badge-wechat {
  position: absolute; top: 10px; right: 10px;
  background: linear-gradient(135deg, var(--accent2), #f97316);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.7rem;
  color: white;
  pointer-events: none;
}

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: 80px; right: 2rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--glow);
  z-index: 300;
  animation: fadeInUp 0.3s ease;
  font-size: 0.9rem;
  pointer-events: none;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .glass-nav { flex-wrap: wrap; padding: 0.6rem 1rem; gap: 0.5rem; }
  .logo span { font-size: 1.05rem; }
  .search-box { width: 100%; order: 3; min-width: unset; max-width: unset; }
  .tools-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); padding: 0.5rem 1rem 1.5rem; }
  .categories { padding: 0.5rem 1rem; }
  .scenes { padding: 1rem 1rem 0.5rem; }
  .scene-tag { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
  .relations-panel { padding: 1rem; }
  .ad-container { padding: 0.5rem 1rem; }
  .wechat-float { bottom: 1rem; right: 1rem; padding: 0.5rem 0.8rem; }
  .wechat-tip { display: none; }
  .scroll-top { bottom: 1rem; left: 1rem; width: 36px; height: 36px; font-size: 1rem; }
  .modal { width: 95%; padding: 1.25rem; }
}

@media (max-width: 600px) {
  .tools-grid { grid-template-columns: 1fr; gap: 0.85rem; }
  .cat-btn { padding: 0.4rem 0.85rem; font-size: 0.8rem; }
  .scene-tag { padding: 0.35rem 0.8rem; font-size: 0.78rem; }
  .tool-card { padding: 1rem; }
  .tool-name { font-size: 0.95rem; }
  .tool-desc { font-size: 0.82rem; }
  .user-role select { max-width: 130px; }
  .relation-item { min-width: 160px; padding: 0.85rem; }
  .relations-panel h3 { font-size: 0.9rem; }
  .toast { right: 1rem; left: 1rem; bottom: 1rem; text-align: center; }
}

@media (max-width: 480px) {
  .glass-nav { padding: 0.5rem 0.75rem; }
  .logo span { font-size: 0.95rem; }
  .logo img { width: 28px; height: 28px; }
  .user-role select { font-size: 0.78rem; padding: 0.35rem 0.4rem; max-width: 120px; }
  .search-box input { padding: 0.55rem 0.9rem; font-size: 0.85rem; }
  .cat-btn { padding: 0.35rem 0.7rem; font-size: 0.75rem; }
  .scene-tag { padding: 0.3rem 0.7rem; font-size: 0.75rem; }
  footer { font-size: 0.78rem; padding: 1rem; }
  .modal { padding: 1rem; }
  .form-group input, .form-group select { padding: 0.5rem 0.7rem; font-size: 0.85rem; }
}