:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --border: #e8e8ed;
  --text: #1d1d1f;
  --text-dim: #6e6e73;
  --accent: #0071e3;
  --success: #34c759;
  --danger: #ff3b30;
  --btn-bg: #f5f5f7;
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text);
  min-height: 100vh; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

#sl-header {
  display: flex; align-items: center; gap: 16px;
  padding: 8px 16px;
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
#sl-header nav a:hover { opacity: .7; }
.brand-subtitle { font-size:11px; color:var(--text-dim); margin-left:8px; padding-left:8px; border-left:1.5px solid var(--border); font-weight:400; white-space:nowrap; }

#sl-main {
  max-width: 1100px; margin: 0 auto; padding: 24px 16px 40px;
}

.sl-hero h1 { font-size: 28px; font-weight: 700; }
.sl-hero p { color: var(--text-dim); font-size: 14px; margin-top: 4px; }

.sl-toolbar {
  display: flex; align-items: center; gap: 12px;
  margin: 20px 0 16px; flex-wrap: wrap;
}
.sl-vis-tab {
  padding: 7px 16px; border: none; background: transparent;
  color: var(--text-dim); font-size: 13px; font-weight: 500;
  border-radius: 7px; cursor: pointer; transition: all .2s;
}
.sl-vis-tab.active {
  background: #fff; color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.sl-vis-badge {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: 11px; font-weight: 500; vertical-align: middle; margin-right: 6px;
}
.sl-vis-badge.public { background: #e5f0ff; color: #0058b5; }
.sl-vis-badge.private { background: #fff3d4; color: #b06d00; }
#sl-search {
  flex: 1; min-width: 200px; padding: 10px 16px;
  border-radius: 10px; border: 1px solid var(--border);
  background: var(--card); font-size: 14px; color: var(--text);
  font-family: inherit;
}
#sl-search:focus { outline: none; border-color: var(--accent); }
#sl-search::placeholder { color: var(--text-dim); }
.sl-filters { display: flex; gap: 8px; align-items: center; }
.sl-filters select {
  padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--card); font-size: 13px; color: var(--text);
  font-family: inherit; cursor: pointer;
}

button { font-family: inherit; cursor: pointer; }
.sl-btn-primary {
  padding: 8px 20px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 13px; font-weight: 600;
  transition: opacity .15s;
}
.sl-btn-primary:hover { opacity: .88; }
.sl-btn-primary:disabled { opacity: .4; cursor: not-allowed; }
.sl-btn-outline {
  padding: 8px 16px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--card); color: var(--text); font-size: 13px;
  transition: all .15s;
}
.sl-btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.sl-btn-danger {
  padding: 8px 20px; border: none; border-radius: 8px;
  background: transparent; color: var(--danger); font-size: 13px; font-weight: 500;
  border: 1px solid transparent; transition: all .15s;
}
.sl-btn-danger:hover { background: var(--danger); color: #fff; border-color: var(--danger); }
.sl-btn-sm {
  padding: 5px 12px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--btn-bg); color: var(--text); font-size: 11px;
  transition: all .15s;
}
.sl-btn-sm:hover { border-color: var(--accent); color: var(--accent); }

/* Grid */
.sl-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.sl-empty { grid-column: 1/-1; text-align: center; color: var(--text-dim); padding: 40px; }

/* Card */
.sl-card {
  background: var(--card); border-radius: var(--radius);
  border: 1px solid var(--border); overflow: hidden;
  cursor: pointer; transition: all .2s;
}
.sl-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); transform: translateY(-2px); }

.sl-card-image {
  width: 100%; height: 170px; background: var(--btn-bg);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.sl-card-image img { width: 100%; height: 100%; object-fit: cover; }
.sl-card-image .sl-card-no-img {
  font-size: 40px; color: var(--text-dim); opacity: .3;
}

.sl-card-body { padding: 14px; }
.sl-card-name { font-size: 15px; font-weight: 600; }
.sl-card-desc {
  font-size: 11px; color: var(--text-dim); margin-top: 4px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  min-height: 32px;
}
.sl-card-meta {
  font-size: 11px; color: var(--text-dim); margin-top: 6px;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.sl-card-tags {
  display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px;
}
.sl-card-tag {
  font-size: 10px; padding: 2px 8px; border-radius: 10px;
  background: var(--btn-bg); color: var(--text-dim);
}
.sl-card-actions {
  display: flex; gap: 6px; margin-top: 10px; padding-top: 10px;
  border-top: 1px solid var(--border);
}

/* FAB */
.sl-fab {
  position: fixed; bottom: 32px; right: 32px; z-index: 50;
  width: 56px; height: 56px; border-radius: 28px;
  border: none; background: var(--accent); color: #fff;
  font-size: 28px; font-weight: 300; line-height: 1;
  box-shadow: 0 4px 16px rgba(0,113,227,.35);
  cursor: pointer; transition: all .2s;
  display: flex; align-items: center; justify-content: center;
}
.sl-fab:hover { transform: scale(1.08); box-shadow: 0 6px 24px rgba(0,113,227,.45); }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,.35); display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.sl-modal {
  background: var(--card); border-radius: 16px;
  max-width: 760px; width: 95%; max-height: 90vh; overflow-y: auto;
  box-shadow: 0 16px 48px rgba(0,0,0,.18);
  position: relative;
}
.sl-modal-close {
  position: sticky; top: 12px; right: 12px; float: right; z-index: 10;
  width: 32px; height: 32px; border-radius: 16px; border: 1px solid var(--border);
  background: var(--card); color: var(--text-dim); font-size: 14px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.sl-modal-close:hover { background: var(--btn-bg); }
.sl-modal-body {
  display: flex; gap: 20px; padding: 24px;
}

/* Image area */
.sl-modal-image {
  width: 280px; flex-shrink: 0; display: flex; flex-direction: column; align-items: center;
}
#sl-image-display {
  width: 260px; height: 180px; border-radius: 12px; overflow: hidden;
  background: var(--btn-bg); display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
}
#sl-image-display img { width: 100%; height: 100%; object-fit: cover; }
#sl-image-placeholder { color: var(--text-dim); font-size: 14px; }
#sl-image-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; justify-content: center; }

/* Fields */
.sl-modal-fields { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.sl-modal-fields label {
  font-size: 11px; color: var(--text-dim); font-weight: 500; margin-bottom: -4px;
}
.sl-modal-fields input, .sl-modal-fields select, .sl-modal-fields textarea {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--card); color: var(--text); font-size: 13px; font-family: inherit;
}
.sl-modal-fields input:focus, .sl-modal-fields select:focus, .sl-modal-fields textarea:focus {
  outline: none; border-color: var(--accent);
}
.sl-section {
  margin-bottom: 12px; padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.sl-section:last-child { border-bottom: none; margin-bottom: 16px; }
.sl-section-label {
  font-size: 11px; font-weight: 600; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: .5px;
  margin-bottom: 8px;
}
.sl-field-row { display: flex; gap: 10px; }
.sl-field-row > div { display: flex; flex-direction: column; gap: 0; }
.sl-modal-btns {
  display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap;
  padding-top: 12px; border-top: 1px solid var(--border);
}

/* AI Dialog */
.sl-ai-dialog {
  background: linear-gradient(135deg, rgba(52,199,89,.08), rgba(0,113,227,.06));
  border: 1px solid rgba(52,199,89,.2);
  border-radius: 10px; padding: 12px; margin-bottom: 14px;
}
.sl-ai-dialog-label {
  font-size: 12px; font-weight: 600; color: #34c759;
  margin-bottom: 8px; display: flex; align-items: center; gap: 6px;
}
.sl-ai-dialog textarea {
  width: 100%; background: var(--card); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 10px; font-size: 12px; font-family: inherit;
  resize: vertical; min-height: 56px; margin-bottom: 8px;
}
.sl-ai-dialog textarea:focus { outline: none; border-color: #34c759; }
#sl-ai-generate-btn {
  padding: 6px 16px; border: none; border-radius: 8px;
  cursor: pointer; font-size: 12px; font-weight: 600; font-family: inherit;
  background: linear-gradient(135deg, #34c759, #0071e3); color: #fff;
  transition: opacity .15s;
}
#sl-ai-generate-btn:hover { opacity: .85; }
#sl-ai-generate-btn:disabled { opacity: .5; cursor: not-allowed; }

/* Picker */
.sl-picker-card {
  background: var(--card); border-radius: 16px;
  max-width: 420px; width: 92%; padding: 24px;
  box-shadow: 0 16px 48px rgba(0,0,0,.18);
  position: relative;
}
.sl-project-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; border-radius: 8px; cursor: pointer;
  transition: background .15s; border: 1px solid transparent;
}
.sl-project-item:hover { background: var(--btn-bg); }
.sl-project-item.selected { border-color: var(--accent); background: rgba(0,113,227,.05); }
.sl-project-item-btn {
  padding: 4px 12px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--card); color: var(--accent); font-size: 11px; font-weight: 500;
  cursor: pointer; transition: all .15s; font-family: inherit;
}
.sl-project-item-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Toast */
.sl-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  padding: 12px 24px; border-radius: 8px; font-size: 14px; z-index: 300;
  animation: toast-in .3s ease, toast-out .3s ease 2.5s forwards;
  pointer-events: none;
  color: #fff;
}
.sl-toast.success { background: var(--success); }
.sl-toast.error { background: var(--danger); }
.sl-toast.info { background: var(--accent); }

@keyframes toast-in { from { opacity:0; transform:translateX(-50%) translateY(10px); } to { opacity:1; transform:translateX(-50%) translateY(0); } }
@keyframes toast-out { from { opacity:1; } to { opacity:0; } }

/* Lightbox */
#sl-lightbox {
  position: fixed; inset: 0; z-index: 500;
  display: none;
}
#sl-lightbox.show {
  display: block;
}
#sl-lightbox-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.88);
  cursor: zoom-out;
}
#sl-lightbox-content {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  pointer-events: none;
}
#sl-lightbox-image-wrap {
  pointer-events: auto;
  display: flex; align-items: center; justify-content: center;
  max-height: 100%;
}
#sl-lightbox-image-wrap img {
  max-width: 90vw; max-height: 90vh; object-fit: contain;
  border-radius: 8px; box-shadow: 0 8px 40px rgba(0,0,0,.4);
}
#sl-lightbox-close {
  position: absolute; top: 16px; right: 24px;
  width: 40px; height: 40px; border-radius: 20px;
  border: 1px solid rgba(255,255,255,.3); background: rgba(0,0,0,.5);
  color: #fff; font-size: 18px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  z-index: 510; pointer-events: auto;
}
#sl-lightbox-close:hover { background: rgba(255,255,255,.15); }

#sl-image-display { transition: opacity .15s; }
#sl-image-display:hover { opacity: .85; }

@media (max-width: 700px) {
  .sl-modal-body { flex-direction: column; align-items: center; }
  .sl-modal-image { width: 100%; }
  #sl-image-display { width: 200px; height: 140px; }
  .sl-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
}