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

/* ===== DARK THEME (默认) ===== */
:root{
  --bg:#0c0b09;--surface:#161513;--surface2:#1f1d1a;--surface3:#2a2723;
  --border:#333028;--border-light:#443f35;
  --text:#f0ece4;--text2:#b5b0a6;--text3:#7a7570;
  --accent:#d4a843;--accent-dim:#a6852e;--accent-bg:rgba(212,168,67,0.08);
  --green:#5a9e6f;--green-bg:rgba(90,158,111,0.12);
  --red:#c45c5c;--red-bg:rgba(196,92,92,0.1);
  --radius:10px;--radius-sm:6px;
  --shadow:0 8px 32px rgba(0,0,0,0.4);
  --font-display:'Cormorant Garamond',Georgia,serif;
  --font-body:'Noto Sans SC',-apple-system,sans-serif;
  --font-mono:'DM Mono','SF Mono',monospace;
  --sidebar-w:260px;
  --detail-w:420px;
  --noise-opacity:0.035;
}

/* ===== LIGHT THEME ===== */
[data-theme="light"]{
  --bg:#faf8f5;--surface:#ffffff;--surface2:#f5f3f0;--surface3:#ebe9e5;
  --border:#e0ddd8;--border-light:#d0cdc8;
  --text:#1a1816;--text2:#5a5854;--text3:#8a8784;
  --accent:#c49642;--accent-dim:#9d7835;--accent-bg:rgba(196,150,66,0.1);
  --green:#4a8e5f;--green-bg:rgba(74,142,95,0.1);
  --red:#b44c4c;--red-bg:rgba(180,76,76,0.08);
  --shadow:0 8px 32px rgba(0,0,0,0.08);
  --noise-opacity:0.02;
}
html{font-size:15px}
body{
  font-family:var(--font-body);color:var(--text);background:var(--bg);
  line-height:1.6;min-height:100vh;overflow:hidden;
}
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:9999;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity:var(--noise-opacity);
}

/* ===== LAYOUT ===== */
.app{display:flex;height:100vh;overflow:hidden}
.sidebar{
  width:var(--sidebar-w);min-width:var(--sidebar-w);
  background:var(--surface);border-right:1px solid var(--border);
  display:flex;flex-direction:column;overflow:hidden;
  transition:transform .3s ease;
}
.main-area{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}
.detail-panel{
  width:var(--detail-w);min-width:var(--detail-w);
  background:var(--surface);border-left:1px solid var(--border);
  overflow-y:auto;display:flex;flex-direction:column;
  transition:transform .3s ease;
}
.detail-panel.hidden{display:none}

/* ===== SIDEBAR ===== */
.sidebar-header{
  padding:24px 20px 16px;border-bottom:1px solid var(--border);
}
.sidebar-header h1{
  font-family:var(--font-display);font-size:1.6rem;font-weight:700;
  color:var(--accent);letter-spacing:.02em;
}
.sidebar-header p{font-size:.75rem;color:var(--text3);margin-top:2px}
.sidebar-section{padding:16px 12px 8px}
.sidebar-section-title{
  font-size:.65rem;font-weight:600;text-transform:uppercase;
  letter-spacing:.1em;color:var(--text3);padding:0 8px;margin-bottom:8px;
}
.sidebar-item{
  display:flex;align-items:center;gap:10px;
  padding:8px 12px;border-radius:var(--radius-sm);
  cursor:pointer;font-size:.85rem;color:var(--text2);
  transition:all .15s ease;user-select:none;
}
.sidebar-item:hover{background:var(--surface2);color:var(--text)}
.sidebar-item.active{background:var(--accent-bg);color:var(--accent)}
.sidebar-item .icon{width:18px;text-align:center;font-size:.9rem;flex-shrink:0}
.sidebar-item .count{
  margin-left:auto;font-size:.72rem;color:var(--text3);
  background:var(--surface2);padding:1px 7px;border-radius:10px;
  min-width:22px;text-align:center;
}
.sidebar-item.active .count{background:var(--accent);color:var(--bg)}
.sidebar-stats{
  margin-top:auto;padding:16px 20px;border-top:1px solid var(--border);
  font-size:.72rem;color:var(--text3);
}
.sidebar-stats span{color:var(--accent);font-weight:600}

/* ===== TOP BAR ===== */
.topbar{
  display:flex;align-items:center;gap:12px;
  padding:16px 24px;border-bottom:1px solid var(--border);
  background:var(--bg);flex-shrink:0;
}
.search-box{
  flex:1;position:relative;max-width:400px;
}
.search-box input{
  width:100%;padding:9px 14px 9px 36px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);color:var(--text);font-size:.85rem;
  font-family:var(--font-body);outline:none;transition:border-color .2s;
}
.search-box input:focus{border-color:var(--accent-dim)}
.search-box input::placeholder{color:var(--text3)}
.search-box::before{
  content:'⌕';position:absolute;left:12px;top:50%;transform:translateY(-50%);
  color:var(--text3);font-size:1rem;
}
.btn{
  padding:9px 18px;border-radius:var(--radius);border:none;
  font-family:var(--font-body);font-size:.82rem;font-weight:500;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--bg)}
.btn-primary:hover{background:#e0b64f;letter-spacing:.03em}
.btn-ghost{background:transparent;color:var(--text2);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--text3);color:var(--text)}
.btn-sm{padding:5px 12px;font-size:.75rem}
.btn-danger{background:var(--red-bg);color:var(--red);border:1px solid transparent}
.btn-danger:hover{border-color:var(--red)}
.mobile-menu-btn{
  display:none;background:none;border:none;color:var(--text);
  font-size:1.3rem;cursor:pointer;padding:4px;
}
.theme-toggle{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:6px 10px;cursor:pointer;
  font-size:1.1rem;transition:all .2s;display:flex;align-items:center;
}
.theme-toggle:hover{border-color:var(--accent-dim);transform:scale(1.05)}

/* ===== PROJECT GRID ===== */
.project-grid-wrap{flex:1;overflow-y:auto;padding:20px 24px}
.project-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:16px;
}
.project-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px 20px;
  cursor:pointer;transition:all .25s ease;position:relative;
  animation:cardIn .4s ease both;
}
.project-card:hover{
  border-color:var(--border-light);transform:translateY(-2px);
  box-shadow:0 6px 24px rgba(0,0,0,0.3);
}
.project-card.selected{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
@keyframes cardIn{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}
.card-header{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}
.card-icon{
  width:36px;height:36px;border-radius:8px;
  background:var(--accent-bg);display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;flex-shrink:0;
}
.card-title{
  font-weight:600;font-size:.92rem;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-source{font-size:.7rem;color:var(--text3);margin-top:2px}
.card-desc{
  font-size:.78rem;color:var(--text2);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:14px;
}
.card-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.card-tag{
  font-size:.68rem;padding:3px 9px;border-radius:20px;
  background:var(--surface2);color:var(--text2);
}
.card-stage{
  font-size:.68rem;padding:3px 10px;border-radius:20px;font-weight:500;
}
.stage-collected{background:var(--accent-bg);color:var(--accent)}
.stage-planning{background:rgba(100,140,200,0.12);color:#8ab4e0}
.stage-developing{background:rgba(180,130,70,0.12);color:#d4b07a}
.stage-testing{background:rgba(160,100,200,0.12);color:#c49ee0}
.stage-completed{background:var(--green-bg);color:var(--green)}
.card-progress{
  margin-top:12px;height:3px;background:var(--surface2);border-radius:2px;overflow:hidden;
}
.card-progress-bar{height:100%;background:var(--accent);border-radius:2px;transition:width .4s ease}

/* ===== EMPTY STATE ===== */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:60px 20px;text-align:center;color:var(--text3);
}
.empty-state .icon{font-size:3rem;margin-bottom:16px;opacity:.5}
.empty-state h3{font-family:var(--font-display);font-size:1.3rem;color:var(--text2);margin-bottom:8px}
.empty-state p{font-size:.82rem;max-width:320px}

/* ===== DETAIL PANEL ===== */
.detail-header{
  padding:20px 24px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
}
.detail-header h2{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text3)}
.detail-close{
  background:none;border:none;color:var(--text3);cursor:pointer;
  font-size:1.2rem;padding:4px;transition:color .15s;
}
.detail-close:hover{color:var(--text)}
.detail-body{flex:1;overflow-y:auto;padding:24px}
.detail-title{
  font-family:var(--font-display);font-size:1.5rem;font-weight:700;
  line-height:1.3;margin-bottom:8px;
}
.detail-url{
  display:inline-block;font-size:.75rem;color:var(--accent);text-decoration:none;
  margin-bottom:16px;word-break:break-all;
}
.detail-url:hover{text-decoration:underline}
.detail-section{margin-bottom:24px}
.detail-section-title{
  font-size:.7rem;font-weight:600;text-transform:uppercase;
  letter-spacing:.08em;color:var(--text3);margin-bottom:10px;
}
.detail-desc{font-size:.85rem;color:var(--text2);line-height:1.7}
.detail-tags{display:flex;flex-wrap:wrap;gap:6px}
.detail-tag{
  font-size:.72rem;padding:4px 12px;border-radius:20px;
  background:var(--surface2);color:var(--text2);
}
.detail-info-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.detail-info-item{background:var(--surface2);border-radius:var(--radius-sm);padding:12px 14px}
.detail-info-label{font-size:.65rem;color:var(--text3);text-transform:uppercase;letter-spacing:.05em}
.detail-info-value{font-size:.85rem;color:var(--text);margin-top:4px;font-weight:500}

/* Progress tracker */
.progress-tracker{display:flex;gap:4px;margin-bottom:8px}
.progress-step{
  flex:1;height:6px;border-radius:3px;background:var(--surface2);
  cursor:pointer;transition:all .2s;
}
.progress-step.filled{background:var(--accent)}
.progress-step.current{background:var(--accent);box-shadow:0 0 8px rgba(212,168,67,0.4)}
.progress-step:hover{transform:scaleY(1.5)}
.progress-labels{display:flex;justify-content:space-between}
.progress-label{
  font-size:.62rem;color:var(--text3);flex:1;text-align:center;cursor:pointer;
  transition:color .15s;
}
.progress-label.active{color:var(--accent);font-weight:600}
.progress-label:hover{color:var(--text2)}

/* Inspiration notes */
.notes-list{display:flex;flex-direction:column;gap:8px}
.note-item{
  background:var(--surface2);border-radius:var(--radius-sm);padding:12px 14px;
  position:relative;group:true;
}
.note-text{font-size:.82rem;color:var(--text2);line-height:1.6;white-space:pre-wrap}
.note-date{font-size:.65rem;color:var(--text3);margin-top:6px}
.note-delete{
  position:absolute;top:8px;right:8px;background:none;border:none;
  color:var(--text3);cursor:pointer;font-size:.75rem;opacity:0;transition:opacity .15s;
}
.note-item:hover .note-delete{opacity:1}
.note-delete:hover{color:var(--red)}
.note-input-wrap{display:flex;gap:8px;margin-top:8px}
.note-input{
  flex:1;background:var(--surface2);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:10px 12px;color:var(--text);
  font-family:var(--font-body);font-size:.82rem;resize:vertical;min-height:42px;
  outline:none;transition:border-color .2s;
}
.note-input:focus{border-color:var(--accent-dim)}
.detail-actions{display:flex;gap:8px;margin-top:auto;padding:16px 24px;border-top:1px solid var(--border)}

/* ===== 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:1000;
  opacity:0;pointer-events:none;transition:opacity .25s;
}
.modal-overlay.active{opacity:1;pointer-events:all}
.modal{
  background:var(--surface);border:1px solid var(--border);
  border-radius:14px;width:90%;max-width:520px;max-height:85vh;
  overflow-y:auto;box-shadow:var(--shadow);
  transform:translateY(20px);transition:transform .3s ease;
}
.modal-overlay.active .modal{transform:translateY(0)}
.modal-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px 16px;border-bottom:1px solid var(--border);
}
.modal-header h2{font-family:var(--font-display);font-size:1.3rem;font-weight:700}
.modal-close{
  background:none;border:none;color:var(--text3);cursor:pointer;font-size:1.3rem;
}
.modal-close:hover{color:var(--text)}
.modal-body{padding:20px 24px}
.form-group{margin-bottom:16px}
.form-label{
  display:block;font-size:.72rem;font-weight:600;text-transform:uppercase;
  letter-spacing:.06em;color:var(--text3);margin-bottom:6px;
}
.form-input,.form-select,.form-textarea{
  width:100%;padding:10px 14px;background:var(--surface2);
  border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--text);font-family:var(--font-body);font-size:.85rem;
  outline:none;transition:border-color .2s;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--accent-dim)}
.form-select{cursor:pointer}
.form-select option{background:var(--surface);color:var(--text)}
.form-textarea{resize:vertical;min-height:80px}
.form-row{display:flex;gap:12px}
.form-row .form-group{flex:1}
.form-hint{font-size:.68rem;color:var(--text3);margin-top:4px}
.modal-footer{
  display:flex;justify-content:flex-end;gap:10px;
  padding:16px 24px 20px;border-top:1px solid var(--border);
}

/* ===== MOBILE ===== */
.mobile-overlay{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:90;
}
@media(max-width:1100px){
  .detail-panel{position:fixed;right:0;top:0;bottom:0;z-index:100;transform:translateX(100%)}
  .detail-panel.visible{transform:translateX(0)}
  .detail-panel.hidden{display:flex}
}
@media(max-width:768px){
  :root{--sidebar-w:280px;--detail-w:100%}
  html{font-size:14px}
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;z-index:100;
    transform:translateX(-100%);box-shadow:var(--shadow);
  }
  .sidebar.open{transform:translateX(0)}
  .mobile-overlay.active{display:block;z-index:99}
  .mobile-menu-btn{display:block}
  .topbar{padding:12px 16px;gap:8px;flex-wrap:wrap}
  .topbar .btn{padding:7px 14px;font-size:.8rem}
  .project-grid-wrap{padding:16px 12px}
  .project-grid{grid-template-columns:1fr;gap:12px}
  .project-card{padding:16px}
  .card-header{gap:10px}
  .card-icon{width:32px;height:32px;font-size:1rem}
  .card-title{font-size:.88rem}
  .detail-panel{
    position:fixed;right:0;top:0;bottom:0;z-index:100;
    width:100%;min-width:unset;transform:translateX(100%);
  }
  .detail-panel.visible{transform:translateX(0)}
  .detail-panel.hidden{display:flex}
  .detail-body{padding:20px 16px}
  .detail-title{font-size:1.3rem}
  .detail-info-grid{grid-template-columns:1fr}
  .search-box{max-width:none;order:3;width:100%}
  .modal{max-width:95%;max-height:90vh}
  .modal-body{padding:16px 20px}
  .form-row{flex-direction:column}
}

@media(max-width:480px){
  html{font-size:13px}
  .sidebar-header h1{font-size:1.4rem}
  .topbar{padding:10px 12px}
  .project-grid-wrap{padding:12px 8px}
  .project-card{padding:14px}
  .detail-body{padding:16px 12px}
  .modal-body{padding:14px 16px}
  .btn{padding:8px 14px}
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--border-light)}

/* ===== TOAST ===== */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--surface3);color:var(--text);padding:10px 20px;
  border-radius:var(--radius);font-size:.82rem;z-index:2000;
  opacity:0;transition:all .3s ease;pointer-events:none;
  border:1px solid var(--border);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}