/* ============================================
   簡案 — Premium Design System
   支援淺色/深色模式 · 莫蘭迪色系
   ============================================ */

/* ---- 莫蘭迪色系 ---- */
:root{
  /* 莫蘭迪色系 - 低飽和度灰調色彩 */
  --morandi-rose:#C4A4A4;
  --morandi-blue:#9AABB8;
  --morandi-green:#A8B5A0;
  --morandi-mauve:#B8A9C9;
  --morandi-sand:#C9B896;
  --morandi-terracotta:#C4A882;
  --morandi-sage:#9CA89C;
  --morandi-dusty:#C2B5B5;
  --morandi-clay:#B8A08A;
  --morandi-fog:#A8A8B0;
}

/* ---- 淺色模式（米色基調）---- */
[data-theme="light"], :root{
  --bg:#F5F0E8;
  --bg-subtle:#EDE8DF;
  --bg-muted:#E5DFD5;
  --panel:#FDFBF7;
  --ink:#2C2825;
  --ink-soft:#5A5550;
  --ink-faint:#8A8580;
  --ink-muted:#B5B0AA;
  --line:#DDD8D0;
  --line-light:#EAE5DC;
  
  /* 品牌色 - 使用莫蘭迪暖色 */
  --accent:#C4A882;
  --accent-light:#D4C0A0;
  --accent-soft:#F4EDE4;
  --accent-dark:#A89068;
  --accent-glow:rgba(196,168,130,0.15);
  
  /* 功能色 - 莫蘭迪版本 */
  --teal:#9CA89C;
  --teal-soft:#E8ECE8;
  --teal-dark:#7A8A7A;
  --amber:#C9B896;
  --amber-soft:#F4EFE4;
  --amber-dark:#A89870;
  --rose:#C4A4A4;
  --rose-soft:#F4ECEC;
  --rose-dark:#A88888;
  --blue:#9AABB8;
  --blue-soft:#E8EFF4;
  --blue-dark:#7A9AAA;
  --purple:#B8A9C9;
  --purple-soft:#EDE8F4;
  --purple-dark:#9888AA;
  
  /* 陰影 */
  --shadow-xs:0 1px 2px rgba(44,40,37,0.04);
  --shadow-sm:0 2px 8px rgba(44,40,37,0.06);
  --shadow-md:0 4px 16px rgba(44,40,37,0.08);
  --shadow-lg:0 8px 32px rgba(44,40,37,0.10);
  --shadow-xl:0 16px 48px rgba(44,40,37,0.14);
}

/* ---- 深色模式 ---- */
[data-theme="dark"]{
  --bg:#1A1816;
  --bg-subtle:#242220;
  --bg-muted:#2E2C28;
  --panel:#2A2826;
  --ink:#E8E4E0;
  --ink-soft:#B8B4B0;
  --ink-faint:#8A8680;
  --ink-muted:#5A5650;
  --line:#3A3835;
  --line-light:#323028;
  
  /* 品牌色 - 深色模式 */
  --accent:#D4B898;
  --accent-light:#E0C8A8;
  --accent-soft:#383028;
  --accent-dark:#B8A080;
  --accent-glow:rgba(212,184,152,0.2);
  
  /* 功能色 - 深色模式 */
  --teal:#A0B0A0;
  --teal-soft:#283028;
  --teal-dark:#80A080;
  --amber:#D0C0A0;
  --amber-soft:#383428;
  --amber-dark:#B0A080;
  --rose:#D0A8A8;
  --rose-soft:#382828;
  --rose-dark:#B08888;
  --blue:#A0B8C8;
  --blue-soft:#283038;
  --blue-dark:#80A0B8;
  --purple:#C0B0D0;
  --purple-soft:#302838;
  --purple-dark:#A090B0;
  
  /* 陰影 */
  --shadow-xs:0 1px 2px rgba(0,0,0,0.2);
  --shadow-sm:0 2px 8px rgba(0,0,0,0.25);
  --shadow-md:0 4px 16px rgba(0,0,0,0.3);
  --shadow-lg:0 8px 32px rgba(0,0,0,0.35);
  --shadow-xl:0 16px 48px rgba(0,0,0,0.4);
}

/* ---- 基礎變數 ---- */
:root{
  /* 圓角 */
  --radius:8px;
  --radius-lg:14px;
  --radius-xl:20px;
  
  /* 字體 */
  --font-display:"Noto Serif TC","Source Han Serif TC","PMingLiU",serif;
  --font-body:"Noto Sans TC","PingFang TC","Microsoft JhengHei",-apple-system,BlinkMacSystemFont,sans-serif;
  --font-mono:"JetBrains Mono","Fira Code","SF Mono",monospace;
  
  /* 過渡 */
  --transition-fast:0.15s cubic-bezier(0.4,0,0.2,1);
  --transition-base:0.2s cubic-bezier(0.4,0,0.2,1);
  --transition-slow:0.3s cubic-bezier(0.4,0,0.2,1);
}

/* Reset */
*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--ink);
  font-size:14px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background var(--transition-slow), color var(--transition-slow);
}

button{font-family:inherit;cursor:pointer;border:none;background:none;}
input,textarea,select{font-family:inherit;font-size:14px;}
a{color:var(--accent);text-decoration:none;transition:color var(--transition-fast);}
a:hover{color:var(--accent-dark);}

/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--ink-muted);border-radius:3px;}
::-webkit-scrollbar-thumb:hover{background:var(--ink-faint);}

/* ============================================
   App Shell
   ============================================ */
#app{display:flex;height:100vh;overflow:hidden;background:var(--bg);}

/* Sidebar */
.sidebar{
  width:240px;
  flex:none;
  background:var(--panel);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  position:relative;
  z-index:20;
  transition:width var(--transition-slow), background var(--transition-slow);
}

.sidebar.collapsed{width:72px;}

/* 手機版側邊欄遮罩 */
.sidebar-overlay{
  display:none;
  position:fixed;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background:rgba(0,0,0,0.5);
  z-index:40;
  opacity:0;
  transition:opacity 0.3s ease;
}
.sidebar-overlay.active{
  display:block;
  opacity:1;
}

.sidebar-head{
  display:flex;
  align-items:center;
  gap:12px;
  padding:20px 18px;
  border-bottom:1px solid var(--line-light);
}

.sidebar-logo{
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-light) 100%);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-display);
  font-weight:700;
  font-size:16px;
  flex:none;
  box-shadow:0 4px 12px var(--accent-glow);
}

.sidebar-title{
  font-family:var(--font-display);
  font-weight:700;
  font-size:18px;
  letter-spacing:0.02em;
  color:var(--ink);
}

.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .navlabel,
.sidebar.collapsed .sidebar-user-meta{display:none;}

.collapse-btn{
  margin-left:auto;
  width:28px;
  height:28px;
  border-radius:6px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex:none;
  color:var(--ink-faint);
  transition:all var(--transition-fast);
}

.sidebar.collapsed .collapse-btn{margin-left:0;}
.collapse-btn:hover{background:var(--bg-subtle);color:var(--ink);}

/* 手機版選單按鈕 */
.menu-toggle{
  display:none;
  width:36px;
  height:36px;
  border-radius:var(--radius);
  align-items:center;
  justify-content:center;
  color:var(--ink-soft);
  transition:all var(--transition-fast);
}
.menu-toggle:hover{
  background:var(--bg-subtle);
  color:var(--ink);
}

/* Navigation */
.nav{flex:1;padding:14px 12px;overflow-y:auto;}

.navitem{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  border-radius:var(--radius);
  color:var(--ink-soft);
  font-size:13.5px;
  font-weight:500;
  margin-bottom:2px;
  white-space:nowrap;
  overflow:hidden;
  transition:all var(--transition-fast);
  cursor:pointer;
}

.navitem .ic{
  width:20px;
  height:20px;
  flex:none;
  display:flex;
  align-items:center;
  justify-content:center;
  opacity:0.7;
}

.navitem:hover{
  background:var(--bg-subtle);
  color:var(--ink);
}

.navitem:hover .ic{opacity:1;}

.navitem.active{
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-weight:600;
}

.navitem.active .ic{opacity:1;}

/* Sidebar Footer */
.sidebar-footer{
  padding:16px 18px;
  border-top:1px solid var(--line-light);
  display:flex;
  align-items:center;
  gap:12px;
}

.avatar{
  width:34px;
  height:34px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:13px;
  font-weight:600;
  flex:none;
  box-shadow:var(--shadow-sm);
}

.sidebar-user-meta{overflow:hidden;}
.sidebar-user-meta .name{
  font-size:13px;
  font-weight:600;
  color:var(--ink);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.sidebar-user-meta .role{
  font-size:11.5px;
  color:var(--ink-faint);
}

/* Main Area */
.main{
  flex:1;
  display:flex;
  flex-direction:column;
  min-width:0;
  overflow:hidden;
}

/* Topbar */
.topbar{
  height:60px;
  flex:none;
  border-bottom:1px solid var(--line-light);
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 28px;
  background:var(--panel);
  transition:background var(--transition-slow);
}

.crumb{
  font-size:13px;
  color:var(--ink-faint);
  display:flex;
  align-items:center;
  gap:8px;
}

.crumb b{
  color:var(--ink);
  font-weight:600;
}

.crumb .seg{cursor:pointer;transition:color var(--transition-fast);}
.crumb .seg:hover{color:var(--accent);}

.topbar-spacer{flex:1;}

/* View */
.view{
  flex:1;
  overflow-y:auto;
  padding:28px 32px 64px;
  background:var(--bg-subtle);
  border-radius:16px;
  border:1px solid var(--line-light);
  margin:12px;
  margin-left:0;
}

/* ============================================
   Buttons
   ============================================ */
.btn{
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--ink);
  padding:9px 16px;
  border-radius:var(--radius);
  font-size:13px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:7px;
  transition:all var(--transition-fast);
  box-shadow:var(--shadow-xs);
}

.btn:hover{
  border-color:var(--ink-muted);
  box-shadow:var(--shadow-sm);
}

.btn:active{
  transform:translateY(1px);
  box-shadow:none;
}

.btn-primary{
  background:var(--accent);
  border-color:transparent;
  color:#fff;
  box-shadow:0 2px 8px var(--accent-glow);
}

.btn-primary:hover{
  background:var(--accent-dark);
  box-shadow:0 4px 12px var(--accent-glow);
}

.btn-ghost{
  border-color:transparent;
  background:transparent;
  box-shadow:none;
}

.btn-ghost:hover{
  background:var(--bg-subtle);
  box-shadow:none;
}

.btn-sm{
  padding:6px 12px;
  font-size:12px;
  border-radius:6px;
}

.btn-danger{color:var(--rose-dark);}
.btn-danger:hover{background:var(--rose-soft);border-color:var(--rose);}

.btn-icon{
  width:34px;
  height:34px;
  padding:0;
  justify-content:center;
}

/* ============================================
   Typography
   ============================================ */
.page-title{
  font-family:var(--font-display);
  font-size:26px;
  font-weight:700;
  margin:0 0 6px;
  letter-spacing:0.01em;
  color:var(--ink);
}

.page-sub{
  color:var(--ink-faint);
  font-size:14px;
  margin:0 0 24px;
}

.section-title{
  font-size:12px;
  font-weight:700;
  color:var(--ink-faint);
  margin:28px 0 14px;
  display:flex;
  align-items:center;
  gap:8px;
  text-transform:uppercase;
  letter-spacing:0.05em;
}

.section-title .dot{
  width:6px;
  height:6px;
  border-radius:50%;
}

/* ============================================
   Cards & Grid
   ============================================ */
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  transition:all var(--transition-base);
}

.card:hover{
  box-shadow:var(--shadow-md);
}

.grid{display:grid;gap:16px;}
.grid-projects{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));}
.grid-docs{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));}

/* Project Card */
.proj-card{
  padding:18px;
  cursor:pointer;
  position:relative;
  transition:all var(--transition-base);
}

.proj-card:hover{
  border-color:var(--accent);
  transform:translateY(-2px);
  box-shadow:var(--shadow-lg);
}

.proj-card .pname{
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  margin-bottom:6px;
  color:var(--ink);
}

.proj-card .pmeta{
  font-size:12px;
  color:var(--ink-faint);
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-top:16px;
}

.stack{display:flex;}
.stack .avatar{margin-left:-8px;border:2px solid var(--panel);}
.stack .avatar:first-child{margin-left:0;}

/* Status Columns */
.status-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}

.status-col-head{
  font-size:12px;
  font-weight:700;
  margin-bottom:12px;
  display:flex;
  align-items:center;
  gap:8px;
  text-transform:uppercase;
  letter-spacing:0.04em;
  color:var(--ink-soft);
}

.status-col-head .n{
  color:var(--ink-faint);
  font-weight:500;
}

.status-col-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-height:60px;
}

.status-col-body.dragover{
  background:var(--accent-soft);
  border-radius:var(--radius-lg);
  padding:8px;
}

/* Document Card */
.doc-card{
  padding:18px;
  cursor:pointer;
  display:flex;
  flex-direction:column;
  gap:10px;
  transition:all var(--transition-base);
}

.doc-card:hover{
  border-color:var(--accent);
  transform:translateY(-2px);
}

.doc-card .dic{
  width:38px;
  height:38px;
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
}

.doc-card .dname{
  font-weight:600;
  font-size:14px;
  color:var(--ink);
}

.doc-card .dtype{
  font-size:12px;
  color:var(--ink-faint);
}

.addcard{
  border:1.5px dashed var(--line);
  border-radius:var(--radius-lg);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:8px;
  color:var(--ink-faint);
  font-size:13px;
  font-weight:600;
  min-height:120px;
  cursor:pointer;
  transition:all var(--transition-base);
}

.addcard:hover{
  border-color:var(--accent);
  color:var(--accent);
  background:var(--accent-soft);
}

/* ============================================
   Kanban
   ============================================ */
.kanban{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:start;}

.kcol{
  background:var(--bg-subtle);
  border-radius:var(--radius-lg);
  padding:14px;
  min-height:200px;
}

.kcol-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:2px 4px 14px;
}

.kcol-head .t{
  font-weight:700;
  font-size:13px;
  display:flex;
  align-items:center;
  gap:8px;
}

.kcol-head .badge{
  background:var(--panel);
  border-radius:20px;
  font-size:11px;
  padding:2px 10px;
  color:var(--ink-faint);
  font-weight:600;
  box-shadow:var(--shadow-xs);
}

.kcard{
  background:var(--panel);
  border-radius:var(--radius);
  padding:14px;
  margin-bottom:10px;
  box-shadow:var(--shadow-sm);
  cursor:grab;
  border:1px solid transparent;
  transition:all var(--transition-fast);
}

.kcard:hover{
  border-color:var(--accent);
  box-shadow:var(--shadow-md);
  transform:translateY(-1px);
}

.kcard.dragging{opacity:0.4;}

.kcard .ktitle{
  font-size:13px;
  font-weight:600;
  margin-bottom:10px;
  color:var(--ink);
}

.kcard .kmeta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:11px;
  color:var(--ink-faint);
}

.kcard .kmeta .due{
  display:flex;
  align-items:center;
  gap:4px;
}

.kcol-add{
  width:100%;
  background:none;
  border:none;
  color:var(--ink-faint);
  font-size:12.5px;
  font-weight:600;
  padding:10px;
  text-align:left;
  border-radius:var(--radius);
  transition:all var(--transition-fast);
}

.kcol-add:hover{
  background:var(--panel);
  color:var(--accent);
}

/* ============================================
   Modal
   ============================================ */
.overlay{
  position:fixed;
  inset:0;
  background:rgba(44,40,37,0.5);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:100;
  padding:20px;
  animation:fadeIn 0.2s ease;
}

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

.modal{
  background:var(--panel);
  border-radius:var(--radius-xl);
  max-width:560px;
  width:100%;
  max-height:88vh;
  overflow-y:auto;
  box-shadow:var(--shadow-xl);
  animation:slideUp 0.25s ease;
}

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

.modal.wide{max-width:760px;}

.modal-head{
  display:flex;
  align-items:center;
  padding:20px 24px;
  border-bottom:1px solid var(--line-light);
  position:sticky;
  top:0;
  background:var(--panel);
  z-index:1;
  border-radius:var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-head h3{
  margin:0;
  font-family:var(--font-display);
  font-size:18px;
  font-weight:700;
}

.modal-body{padding:24px;}

.modal-foot{
  padding:18px 24px;
  border-top:1px solid var(--line-light);
  display:flex;
  justify-content:flex-end;
  gap:10px;
  background:var(--bg-subtle);
  border-radius:0 0 var(--radius-xl) var(--radius-xl);
}

/* Form Fields */
.field{margin-bottom:18px;}

.field label{
  display:block;
  font-size:12px;
  font-weight:700;
  color:var(--ink-soft);
  margin-bottom:8px;
  text-transform:uppercase;
  letter-spacing:0.04em;
}

.field input[type=text],
.field input[type=date],
.field input[type=url],
.field textarea,
.field select{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:10px 14px;
  background:var(--bg-subtle);
  color:var(--ink);
  transition:all var(--transition-fast);
}

.field input:focus,
.field textarea:focus,
.field select:focus{
  outline:none;
  border-color:var(--accent);
  background:var(--panel);
  box-shadow:0 0 0 3px var(--accent-glow);
}

.field textarea{resize:vertical;min-height:80px;}

.field-row{display:flex;gap:14px;}
.field-row .field{flex:1;}

/* Chips */
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 14px;
  border-radius:20px;
  background:var(--bg-subtle);
  font-size:12px;
  font-weight:600;
  border:1px solid var(--line);
  transition:all var(--transition-fast);
  cursor:pointer;
}

.chip:hover{
  border-color:var(--accent);
}

.chip.on{
  background:var(--accent-soft);
  border-color:var(--accent);
  color:var(--accent-dark);
}

/* Member Pick */
.member-pick{display:flex;flex-wrap:wrap;gap:10px;}

.member-pick .mchip{
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 14px 6px 6px;
  border-radius:24px;
  border:1px solid var(--line);
  font-size:12px;
  font-weight:600;
  transition:all var(--transition-fast);
  cursor:pointer;
}

.member-pick .mchip:hover{
  border-color:var(--accent);
}

.member-pick .mchip.on{
  border-color:var(--accent);
  background:var(--accent-soft);
}

/* Empty State */
.empty{
  text-align:center;
  color:var(--ink-faint);
  padding:64px 24px;
  font-size:14px;
}

.empty .big{
  font-size:48px;
  margin-bottom:12px;
  opacity:0.5;
}

/* ============================================
   PRD
   ============================================ */
.prd-block{margin-bottom:24px;}

.prd-block .lab{
  font-size:11px;
  font-weight:700;
  letter-spacing:0.06em;
  color:var(--accent-dark);
  background:var(--accent-soft);
  display:inline-block;
  padding:4px 12px;
  border-radius:6px;
  margin-bottom:10px;
  text-transform:uppercase;
}

.feat-list{display:flex;flex-direction:column;gap:10px;}
.feat-row{display:flex;gap:10px;align-items:center;}
.feat-row input{flex:1;}

/* ============================================
   Gantt
   ============================================ */
.gantt-wrap{overflow-x:auto;}

.gantt{
  border-collapse:collapse;
  min-width:700px;
  width:100%;
}

.gantt th{
  font-size:11px;
  color:var(--ink-faint);
  font-weight:600;
  padding:8px 6px;
  border-bottom:1px solid var(--line);
  text-align:center;
}

.gantt td{
  border-bottom:1px solid var(--line-light);
  height:42px;
  position:relative;
}

.gantt td.namecell{
  text-align:left;
  font-size:13px;
  font-weight:600;
  padding-left:12px;
  white-space:nowrap;
  min-width:150px;
  position:sticky;
  left:0;
  background:var(--panel);
}

.gantt-bar{
  position:absolute;
  top:10px;
  height:22px;
  border-radius:6px;
  opacity:0.9;
}

/* ============================================
   Roadmap
   ============================================ */
.roadmap{display:flex;gap:18px;overflow-x:auto;padding-bottom:10px;}

.rphase{
  min-width:240px;
  background:var(--bg-subtle);
  border-radius:var(--radius-lg);
  padding:16px;
}

.rphase h4{
  margin:0 0 4px;
  font-family:var(--font-display);
  font-size:15px;
}

.rphase .period{
  font-size:12px;
  color:var(--ink-faint);
  margin-bottom:12px;
}

.ritem{
  background:var(--panel);
  border-radius:var(--radius);
  padding:10px 12px;
  font-size:13px;
  margin-bottom:10px;
  box-shadow:var(--shadow-xs);
  transition:all var(--transition-fast);
}

.ritem:hover{box-shadow:var(--shadow-sm);}

/* ============================================
   Calendar
   ============================================ */
.cal-head{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:20px;
}

.cal-grid{
  display:grid;
  grid-template-columns:repeat(7,1fr);
  gap:10px;
}

.cal-dow{
  font-size:11px;
  color:var(--ink-faint);
  text-align:center;
  font-weight:700;
  padding-bottom:6px;
  text-transform:uppercase;
  letter-spacing:0.04em;
}

.cal-cell{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  min-height:96px;
  padding:8px;
  font-size:12px;
  position:relative;
  transition:all var(--transition-fast);
}

.cal-cell:hover{
  border-color:var(--accent);
  box-shadow:var(--shadow-sm);
}

.cal-cell.other{
  background:var(--bg-subtle);
  color:var(--ink-faint);
}

.cal-cell .dnum{
  font-weight:700;
  font-size:13px;
  margin-bottom:6px;
}

.cal-cell.today .dnum{
  color:#fff;
  background:var(--accent);
  width:24px;
  height:24px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 2px 8px var(--accent-glow);
}

.cal-item{
  background:var(--accent-soft);
  color:var(--accent-dark);
  border-radius:5px;
  padding:3px 6px;
  margin-bottom:4px;
  font-size:11px;
  font-weight:600;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  cursor:pointer;
  transition:all var(--transition-fast);
}

.cal-item:hover{
  background:var(--accent);
  color:#fff;
}

/* ============================================
   Todo
   ============================================ */
.todo-row{
  display:flex;
  align-items:center;
  gap:14px;
  padding:14px 16px;
  border-bottom:1px solid var(--line-light);
  transition:background var(--transition-fast);
}

.todo-row:last-child{border-bottom:none;}
.todo-row:hover{background:var(--bg-subtle);}

.todo-check{
  width:20px;
  height:20px;
  border-radius:50%;
  border:2px solid var(--line);
  flex:none;
  cursor:pointer;
  transition:all var(--transition-fast);
  display:flex;
  align-items:center;
  justify-content:center;
}

.todo-check:hover{
  border-color:var(--teal);
}

.todo-check.done{
  background:var(--teal);
  border-color:var(--teal);
}

.todo-main{flex:1;min-width:0;}

.todo-title{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
}

.todo-title.done{
  text-decoration:line-through;
  color:var(--ink-faint);
}

.todo-sub{
  font-size:12px;
  color:var(--ink-faint);
  display:flex;
  gap:12px;
  margin-top:4px;
  flex-wrap:wrap;
}

.tag{
  padding:2px 10px;
  border-radius:20px;
  font-size:11px;
  font-weight:700;
}

.tag.pending{background:var(--bg-subtle);color:var(--ink-soft);}
.tag.doing{background:var(--amber-soft);color:var(--amber-dark);}
.tag.testing{background:var(--blue-soft);color:var(--blue-dark);}
.tag.done{background:var(--teal-soft);color:var(--teal-dark);}

/* ============================================
   Backlog
   ============================================ */
.backlog-tabs{
  display:flex;
  gap:10px;
  margin-bottom:20px;
  flex-wrap:wrap;
}

.backtab{
  padding:8px 16px;
  border-radius:24px;
  background:var(--panel);
  border:1px solid var(--line);
  font-size:12.5px;
  font-weight:600;
  color:var(--ink-soft);
  transition:all var(--transition-fast);
}

.backtab:hover{
  border-color:var(--accent);
}

.backtab.active{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}

.blitem{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px;
  border-bottom:1px solid var(--line-light);
  transition:background var(--transition-fast);
}

.blitem:last-child{border-bottom:none;}
.blitem:hover{background:var(--bg-subtle);}

.blkind{
  padding:4px 10px;
  border-radius:6px;
  font-size:10px;
  font-weight:800;
  flex:none;
  text-transform:uppercase;
  letter-spacing:0.04em;
  display:flex;
  align-items:center;
  gap:4px;
}

.blkind.idea{background:var(--teal-soft);color:var(--teal-dark);}
.blkind.bug{background:var(--rose-soft);color:var(--rose-dark);}

/* ============================================
   Chat
   ============================================ */
.chat-wrap{
  display:flex;
  height:calc(100vh - 150px);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  overflow:hidden;
  background:var(--panel);
  box-shadow:var(--shadow-sm);
}

.chat-list{
  width:240px;
  border-right:1px solid var(--line-light);
  overflow-y:auto;
  flex:none;
}

.chat-contact{
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 16px;
  border-bottom:1px solid var(--line-light);
  cursor:pointer;
  transition:all var(--transition-fast);
}

.chat-contact:hover,.chat-contact.active{
  background:var(--accent-soft);
}

.chat-contact .cn{
  font-size:13px;
  font-weight:600;
  color:var(--ink);
}

.chat-main{
  flex:1;
  display:flex;
  flex-direction:column;
  min-width:0;
}

.chat-head{
  padding:16px 20px;
  border-bottom:1px solid var(--line-light);
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
}

.chat-msgs{
  flex:1;
  overflow-y:auto;
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:12px;
}

.msg{
  max-width:65%;
  padding:10px 14px;
  border-radius:16px;
  font-size:13px;
  background:var(--bg-subtle);
  align-self:flex-start;
}

.msg.me{
  background:var(--accent);
  color:#fff;
  align-self:flex-end;
}

.msg .t{
  font-size:10px;
  opacity:0.6;
  margin-top:4px;
}

.chat-input{
  display:flex;
  gap:10px;
  padding:14px 16px;
  border-top:1px solid var(--line-light);
  background:var(--bg-subtle);
}

.chat-input input{
  flex:1;
  border:1px solid var(--line);
  border-radius:24px;
  padding:10px 18px;
  background:var(--panel);
  transition:all var(--transition-fast);
}

.chat-input input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-glow);
}

/* ============================================
   Canvas Boards
   ============================================ */
.board-toolbar{
  display:flex;
  gap:10px;
  margin-bottom:14px;
  flex-wrap:wrap;
  align-items:center;
}

.board-wrap{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--panel);
  height:560px;
  overflow:auto;
}

.board-canvas{
  position:relative;
  width:1600px;
  height:1200px;
  background:
    linear-gradient(var(--panel),var(--panel)),
    radial-gradient(circle,var(--line) 1px,transparent 1px);
  background-size:100% 100%, 20px 20px;
}

.node{
  position:absolute;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  border:2px solid var(--accent);
  background:var(--panel);
  font-size:13px;
  font-weight:600;
  padding:8px;
  cursor:move;
  user-select:none;
  color:var(--ink);
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--transition-fast);
}

.node:hover{box-shadow:var(--shadow-md);}

.node.rect{border-radius:var(--radius);}
.node.diamond{border-radius:4px;transform-origin:center;}
.node.diamond .txt{transform:none;}

.node .resize{
  position:absolute;
  right:-5px;
  bottom:-5px;
  width:12px;
  height:12px;
  background:var(--accent);
  border-radius:3px;
  cursor:nwse-resize;
}

.node .del{
  position:absolute;
  top:-9px;
  right:-9px;
  width:18px;
  height:18px;
  border-radius:50%;
  background:var(--rose);
  color:#fff;
  font-size:11px;
  display:none;
  align-items:center;
  justify-content:center;
  line-height:0;
}

.node:hover .del{display:flex;}

svg.edges{
  position:absolute;
  top:0;
  left:0;
  pointer-events:none;
}

.wf-el{
  position:absolute;
  cursor:move;
  user-select:none;
  box-sizing:border-box;
}

.wf-el .del{
  position:absolute;
  top:-9px;
  right:-9px;
  width:18px;
  height:18px;
  border-radius:50%;
  background:var(--rose);
  color:#fff;
  font-size:11px;
  display:none;
  align-items:center;
  justify-content:center;
}

.wf-el:hover .del{display:flex;}

.wf-el .resize{
  position:absolute;
  right:-5px;
  bottom:-5px;
  width:12px;
  height:12px;
  background:var(--ink-soft);
  border-radius:3px;
  cursor:nwse-resize;
}

/* ============================================
   Meeting
   ============================================ */
.meeting-item{
  padding:18px;
  border-bottom:1px solid var(--line-light);
  transition:background var(--transition-fast);
}

.meeting-item:last-child{border-bottom:none;}
.meeting-item:hover{background:var(--bg-subtle);}

.meeting-item .mt{
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
}

.meeting-item .mm{
  font-size:12px;
  color:var(--ink-faint);
  margin:6px 0 10px;
}

.meeting-item .mc{
  font-size:13px;
  color:var(--ink-soft);
  white-space:pre-wrap;
}

/* ============================================
   Settings
   ============================================ */
.settings-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  max-width:860px;
}

.member-row{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--line-light);
}

.member-row:last-child{border-bottom:none;}

/* 主題切換按鈕 */
.theme-switcher{
  display:flex;
  gap:8px;
  padding:4px;
  background:var(--bg-subtle);
  border-radius:var(--radius);
}

.theme-btn{
  padding:8px 16px;
  border-radius:6px;
  font-size:12px;
  font-weight:600;
  color:var(--ink-soft);
  transition:all var(--transition-fast);
  display:flex;
  align-items:center;
  gap:6px;
}

.theme-btn:hover{
  color:var(--ink);
}

.theme-btn.active{
  background:var(--panel);
  color:var(--ink);
  box-shadow:var(--shadow-sm);
}

/* ============================================
   Misc
   ============================================ */
.hint{
  font-size:12px;
  color:var(--ink-faint);
  margin-top:-10px;
  margin-bottom:18px;
  display:flex;
  align-items:center;
  gap:6px;
}

.toast{
  position:fixed;
  bottom:28px;
  left:50%;
  transform:translateX(-50%);
  background:var(--ink);
  color:var(--bg);
  padding:12px 24px;
  border-radius:28px;
  font-size:13px;
  font-weight:500;
  z-index:200;
  box-shadow:var(--shadow-lg);
  opacity:0;
  transition:opacity var(--transition-base), transform var(--transition-base);
  pointer-events:none;
}

.toast.show{
  opacity:1;
  transform:translateX(-50%) translateY(-4px);
}

.icon-btn{
  border:1px solid var(--line);
  background:var(--panel);
  width:32px;
  height:32px;
  border-radius:var(--radius);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--ink-soft);
  transition:all var(--transition-fast);
}

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

.attach-list{display:flex;flex-direction:column;gap:8px;}

.attach-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  background:var(--bg-subtle);
  padding:10px 12px;
  border-radius:var(--radius);
  transition:background var(--transition-fast);
}

.attach-item:hover{background:var(--line-light);}

.attach-item a{
  flex:1;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--accent);
}

/* ============================================
   Icon Component
   ============================================ */
.icon{
  width:1em;
  height:1em;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

.icon svg{
  width:100%;
  height:100%;
  stroke:currentColor;
  stroke-width:2;
  stroke-linecap:round;
  stroke-linejoin:round;
  fill:none;
}

/* ============================================
   Responsive
   ============================================ */

/* 平板 */
@media (max-width:1024px){
  .status-cols,.kanban{grid-template-columns:repeat(2,1fr);}
  .settings-grid{grid-template-columns:1fr;}
}

/* 手機 */
@media (max-width:768px){
  .sidebar-overlay{
    display:none;
  }
  .sidebar-overlay.active{
    display:block;
  }
  
  .sidebar{
    position:fixed;
    left:0;
    top:0;
    bottom:0;
    z-index:50;
    width:260px;
    transform:translateX(-100%);
    transition:transform 0.3s ease;
  }
  .sidebar:not(.collapsed){
    transform:translateX(0);
  }
  .main{
    margin-left:0 !important;
    padding:8px !important;
  }
  .view{
    padding:16px !important;
    margin:8px !important;
    border-radius:12px !important;
  }
  
  /* 頂部導航 */
  .topbar{
    padding:12px 16px !important;
    gap:8px !important;
  }
  .topbar .breadcrumb{
    display:none;
  }
  .topbar-title{
    font-size:16px !important;
  }
  
  /* 選單按鈕 */
  .menu-toggle{
    display:flex !important;
  }
  
  /* 卡片和內容 */
  .card{
    padding:16px !important;
    margin-bottom:12px;
  }
  .page-title{
    font-size:22px !important;
    margin-bottom:8px !important;
  }
  .page-sub{
    font-size:12px !important;
    margin-bottom:16px !important;
  }
  
  /* 表單欄位 */
  .field{
    margin-bottom:14px;
  }
  .field-row{
    flex-direction:column;
    gap:12px;
  }
  
  /* 看板 */
  .status-cols{
    grid-template-columns:1fr !important;
    gap:12px;
  }
  .kanban{
    grid-template-columns:1fr !important;
  }
  .kanban-col{
    min-height:auto;
  }
  
  /* 表格 */
  .tbl{
    font-size:12px;
  }
  .tbl th,.tbl td{
    padding:8px 6px;
  }
  
  /* 待辦清單 */
  .todo-row{
    padding:10px 0;
  }
  .todo-sub{
    flex-wrap:wrap;
    gap:4px;
  }
  
  /* 聊天室 */
  .chat-wrap{
    height:calc(100vh - 180px);
    flex-direction:column !important;
  }
  .chat-list{
    width:100% !important;
    max-height:180px;
    border-right:none !important;
    border-bottom:1px solid var(--line);
    flex:none !important;
  }
  .chat-main{
    width:100% !important;
    flex:1 !important;
    min-height:0;
  }
  .chat-msgs{
    min-height:0;
    flex:1;
  }
  
  /* 設定頁 */
  .settings-grid{
    grid-template-columns:1fr;
  }
  
  /* 模態框 */
  .modal{
    width:95% !important;
    max-height:90vh;
    margin:5vh auto;
  }
  .modal-body{
    padding:16px !important;
  }
  .modal-foot{
    padding:12px 16px !important;
  }
  
  /* 標籤和徽章 */
  .tag{
    font-size:10px;
    padding:2px 6px;
  }
  
  /* 按鈕 */
  .btn-sm{
    padding:6px 10px;
    font-size:12px;
  }
  
  /* 圖標 */
  .icon{
    width:16px;
    height:16px;
  }
  
  /* 甘特圖 */
  .gantt-wrap{
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
  }
  .gantt-header,.gantt-body{
    min-width:800px;
  }
  
  /* 行程表 */
  .meet-row{
    padding:10px 0;
  }
  .meet-time{
    min-width:50px;
    font-size:12px;
  }
  
  /* 日曆 */
  .cal-grid{
    gap:2px;
  }
  .cal-day{
    min-height:60px;
    padding:4px;
  }
  .cal-day .num{
    font-size:12px;
  }
  
  /* 首頁 */
  .dash-grid{
    grid-template-columns:1fr;
  }
  
  /* 路線圖 */
  .roadmap-cols{
    grid-template-columns:1fr;
  }
  
  /* 使用者流程 */
  .uf-canvas{
    min-height:500px;
  }
}

/* 小手機 */
@media (max-width:400px){
  .main{
    padding:12px !important;
  }
  .page-title{
    font-size:18px !important;
  }
  .card{
    padding:12px !important;
  }
  .chat-msgs{
    min-height:auto;
  }
}