/* =============================================
   知竞AI赋能平台 · 设计系统 v3.0
   World-Class Enterprise AI Platform
   ============================================= */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&family=Noto+Sans+SC:wght@300;400;500;600;700&family=Noto+Serif+SC:wght@400;500;600;700&display=swap');

/* --- Reset --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;scroll-behavior:smooth}
body{
  font-family:'DM Sans','Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;
  min-height:100vh;min-height:100dvh;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
a{color:var(--accent);text-decoration:none;transition:color .2s}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none}
button{cursor:pointer;border:none;background:none}
::selection{background:var(--accent);color:#fff}

/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--text3)}

/* --- Design Tokens --- */
:root{
  /* Brand — Navy + Gold (synced with login.html) */
  --brand-deep:#1c1c30;
  --brand-primary:#b38434;
  --brand-secondary:#9a7029;
  --brand-accent:#b38434;
  --brand-gradient:linear-gradient(135deg,#b38434 0%,#9a7029 100%);
  --brand-gradient-v:linear-gradient(180deg,#b38434 0%,#9a7029 100%);
  --brand-glow:0 0 80px rgba(179,132,52,.15);

  /* Surfaces — warm tones */
  --bg:#faf8f5;
  --bg-secondary:#f4f1eb;
  --bg-elevated:#FFFFFF;
  --bg-frosted:rgba(255,255,255,.8);
  --bg-overlay:rgba(28,28,48,.6);
  --bg-subtle:#faf8f5;

  /* Cards */
  --card:#FFFFFF;
  --card-border:rgba(28,28,48,.07);
  --card-hover:rgba(179,132,52,.03);
  --card-shadow:0 1px 3px rgba(0,0,0,.04),0 1px 2px rgba(0,0,0,.02);
  --card-shadow-hover:0 8px 30px rgba(0,0,0,.08);

  /* Borders */
  --border:#eae6dc;
  --border-light:#f4f1eb;
  --border-focus:#b38434;

  /* Text — warm ink tones */
  --text:#111120;
  --text-secondary:#333345;
  --text-muted:#a0a0b0;
  --text-inverse:#FFFFFF;
  --text3:#a0a0b0;

  /* Accent — Gold */
  --accent:#b38434;
  --accent-hover:#9a7029;
  --accent-light:rgba(179,132,52,.08);
  --accent-bg:rgba(179,132,52,.06);

  /* Status */
  --success:#10B981;
  --success-bg:rgba(16,185,129,.08);
  --warn:#F59E0B;
  --warn-bg:rgba(245,158,11,.08);
  --danger:#b53a3a;
  --danger-bg:rgba(181,58,58,.06);
  --info:#6e6e82;
  --info-bg:rgba(110,110,130,.08);

  /* Sidebar — Navy */
  --sidebar-w:272px;
  --sidebar-bg:#1c1c30;
  --sidebar-text:rgba(255,255,255,.7);
  --sidebar-text-active:#FFFFFF;
  --sidebar-hover:rgba(255,255,255,.10);
  --sidebar-active:rgba(179,132,52,.35);
  --sidebar-border:rgba(255,255,255,.08);

  /* Radii */
  --r-xs:6px;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-2xl:24px;
  --r-full:9999px;

  /* Shadows */
  --shadow-xs:0 1px 2px rgba(0,0,0,.04);
  --shadow-sm:0 2px 4px rgba(0,0,0,.04);
  --shadow-md:0 4px 16px rgba(0,0,0,.06);
  --shadow-lg:0 12px 40px rgba(0,0,0,.1);
  --shadow-xl:0 20px 60px rgba(0,0,0,.12);

  /* Motion */
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
  --ease-smooth:cubic-bezier(.4,0,.2,1);
  --dur-fast:120ms;
  --dur:200ms;
  --dur-slow:300ms;

  /* Layout */
  --topbar-h:0px;
  --safe-bottom:env(safe-area-inset-bottom,0px);
  --content-max:1400px;
}

/* ===== LAYOUT ===== */

.app-shell{
  display:flex;
  min-height:100vh;min-height:100dvh;
}

/* --- Sidebar (Desktop) --- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--sidebar-bg);
  display:flex;flex-direction:column;
  z-index:100;
  transition:width .25s cubic-bezier(.4,0,.2,1), transform .3s var(--ease-out);
  border-right:1px solid var(--sidebar-border);
  overflow:hidden;
}
.sidebar-header{
  padding:24px 20px 20px;
  border-bottom:1px solid var(--sidebar-border);
}
.sidebar-brand{
  display:flex;align-items:center;gap:12px;
}
.sidebar-logo{
  width:36px;height:36px;
  border-radius:var(--r-sm);
  background:#f5f0e6;
  border:1px solid rgba(179,132,52,.15);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:#b38434;font-weight:700;
  box-shadow:0 2px 8px rgba(179,132,52,.1);
  flex-shrink:0;
}
.sidebar-brand-text{
  font-size:15px;font-weight:700;
  color:var(--sidebar-text-active);
  letter-spacing:-.02em;
}
.sidebar-brand-sub{
  font-size:11px;color:var(--sidebar-text);
  margin-top:1px;font-weight:400;
  opacity:.6;
}

.sidebar-new-btn{
  display:flex;align-items:center;gap:10px;
  width:100%;padding:11px 16px;margin-top:16px;
  background:var(--brand-gradient);color:#fff;
  border-radius:var(--r-md);font-size:14px;font-weight:600;
  transition:all .2s;cursor:pointer;border:none;
  box-shadow:0 2px 12px rgba(179,132,52,.25);
  letter-spacing:-.01em;
}
.sidebar-new-btn:hover{
  box-shadow:0 4px 20px rgba(179,132,52,.4);
  transform:translateY(-1px);
}
.sidebar-new-btn:active{transform:scale(.97)}

.sidebar-nav{
  flex:1;overflow-y:auto;padding:12px 12px;
  scrollbar-width:none;
}
.sidebar-nav::-webkit-scrollbar{display:none}

.sidebar-section-label{
  font-size:11px;font-weight:600;
  color:var(--sidebar-text);opacity:.5;
  text-transform:uppercase;letter-spacing:.1em;
  padding:16px 8px 6px;
}

.sidebar-item{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:var(--r-sm);
  color:var(--sidebar-text);font-size:14px;font-weight:500;
  cursor:pointer;transition:all .15s;
  margin-bottom:2px;position:relative;
  text-decoration:none;
}
.sidebar-item:hover{
  background:var(--sidebar-hover);
  color:var(--sidebar-text-active);
}
.sidebar-item.active{
  background:var(--sidebar-active);
  color:var(--sidebar-text-active);
  font-weight:600;
}
.sidebar-item.active::before{
  content:'';position:absolute;left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:24px;
  background:var(--brand-primary);
  border-radius:0 3px 3px 0;
}
.sidebar-item-icon{
  width:20px;height:20px;display:flex;
  align-items:center;justify-content:center;
  opacity:.7;flex-shrink:0;
}
.sidebar-item.active .sidebar-item-icon{opacity:1}
.sidebar-item-badge{
  margin-left:auto;
  font-size:11px;font-weight:600;
  background:var(--danger);color:#fff;
  padding:1px 7px;border-radius:var(--r-full);
  min-width:20px;text-align:center;
}
.sidebar-item-count{
  margin-left:auto;
  font-size:12px;color:var(--sidebar-text);
  opacity:.5;
}

.sidebar-footer{
  padding:16px;
  border-top:1px solid var(--sidebar-border);
}
.sidebar-user{
  display:flex;align-items:center;gap:10px;
  padding:8px;border-radius:var(--r-sm);
  cursor:pointer;transition:background .15s;
}
.sidebar-user:hover{background:var(--sidebar-hover)}
.sidebar-avatar{
  width:32px;height:32px;border-radius:var(--r-full);
  background:var(--brand-gradient);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:#fff;
  flex-shrink:0;
}
.sidebar-user-info{flex:1;min-width:0}
.sidebar-user-name{
  font-size:13px;font-weight:600;
  color:var(--sidebar-text-active);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.sidebar-user-role{
  font-size:11px;color:var(--sidebar-text);opacity:.6;
}

/* --- Main Content Area --- */
.main-content{
  flex:1;
  margin-left:var(--sidebar-w);
  min-height:100vh;min-height:100dvh;
  display:flex;flex-direction:column;
  background:var(--bg);
  transition:margin-left .25s cubic-bezier(.4,0,.2,1);
}

.page-container{
  width:100%;max-width:var(--content-max);
  margin:0 auto;
  padding:32px 40px;
}

/* --- Mobile Bottom Nav --- */
.mobile-nav{
  display:none;
  position:fixed;bottom:0;left:0;right:0;
  background:var(--bg-frosted);
  backdrop-filter:blur(24px) saturate(180%);
  -webkit-backdrop-filter:blur(24px) saturate(180%);
  border-top:1px solid var(--border);
  padding:8px 0 calc(8px + var(--safe-bottom));
  z-index:100;
}
.mobile-nav-inner{
  display:flex;justify-content:space-around;
  max-width:400px;margin:0 auto;
}
.mobile-nav-item{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:4px 12px;border-radius:var(--r-sm);
  font-size:10px;font-weight:600;color:var(--text-muted);
  cursor:pointer;transition:all .15s;
  text-decoration:none;
}
.mobile-nav-item.active{color:var(--accent)}
.mobile-nav-item svg{width:22px;height:22px}

/* Mobile header */
.mobile-header{
  display:none;
  position:sticky;top:0;z-index:50;
  padding:12px 16px;
  background:var(--bg-frosted);
  backdrop-filter:blur(24px) saturate(180%);
  -webkit-backdrop-filter:blur(24px) saturate(180%);
  border-bottom:1px solid var(--border-light);
  align-items:center;gap:12px;
}
.mobile-header-logo{
  width:30px;height:30px;border-radius:var(--r-xs);
  background:#f5f0e6;border:1px solid rgba(179,132,52,.15);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;color:#b38434;font-weight:700;
}
.mobile-header-title{
  flex:1;font-size:16px;font-weight:700;
  color:var(--text);letter-spacing:-.02em;
}
.mobile-header-actions{display:flex;gap:4px}
.mobile-header-btn{
  width:36px;height:36px;border-radius:var(--r-full);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);transition:all .15s;cursor:pointer;
}
.mobile-header-btn:hover{background:var(--bg-secondary)}

/* --- Sidebar Collapse (Desktop) --- */
.sidebar-collapse-btn{
  position:absolute;right:-14px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:var(--r-full);
  background:var(--sidebar-bg);border:1px solid var(--sidebar-border);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;z-index:101;color:var(--sidebar-text);
  transition:all .2s var(--ease-out);opacity:1;
}
.sidebar-collapse-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.sidebar-collapse-btn svg{transition:transform .3s var(--ease-out)}

/* Collapsed state — smooth transitions */
body.sidebar-collapsed .sidebar{width:72px}

/* Fadeable elements: use opacity + visibility instead of display:none */
.sidebar .sidebar-brand-text,
.sidebar .sidebar-brand-sub,
.sidebar .sidebar-new-btn span,
.sidebar .sidebar-section-label,
.sidebar .sidebar-item-count,
.sidebar .sidebar-user-info,
.sidebar .sidebar-user > svg:last-child,
.sidebar .sidebar-footer > div:not(.sidebar-user),
.sidebar .sidebar-item .sidebar-item-label,
.sidebar .quota-bar{
  transition: opacity .18s ease .1s, visibility .18s ease .1s;
  opacity:1; visibility:visible; white-space:nowrap;
}

body.sidebar-collapsed .sidebar .sidebar-brand-text,
body.sidebar-collapsed .sidebar .sidebar-brand-sub,
body.sidebar-collapsed .sidebar .sidebar-new-btn span,
body.sidebar-collapsed .sidebar .sidebar-section-label,
body.sidebar-collapsed .sidebar .sidebar-item-count,
body.sidebar-collapsed .sidebar .sidebar-user-info,
body.sidebar-collapsed .sidebar .sidebar-user > svg:last-child,
body.sidebar-collapsed .sidebar .sidebar-footer > div:not(.sidebar-user),
body.sidebar-collapsed .sidebar .sidebar-item .sidebar-item-label,
body.sidebar-collapsed .sidebar .sidebar-item span:not(.sidebar-item-icon),
body.sidebar-collapsed .sidebar .quota-bar{
  opacity:0; visibility:hidden;
  width:0; height:0; overflow:hidden;
  margin:0; padding:0;
  position:absolute;
  transition: opacity .15s ease, visibility .15s ease;
}

body.sidebar-collapsed .sidebar .sidebar-header{padding:20px 12px 16px;transition:padding .25s cubic-bezier(.4,0,.2,1)}
body.sidebar-collapsed .sidebar .sidebar-brand{justify-content:center}
body.sidebar-collapsed .sidebar .sidebar-new-btn{
  width:44px;height:44px;padding:0;justify-content:center;margin-top:12px;
  transition:all .25s cubic-bezier(.4,0,.2,1);
}
body.sidebar-collapsed .sidebar .sidebar-nav{padding:8px;transition:padding .25s cubic-bezier(.4,0,.2,1)}
body.sidebar-collapsed .sidebar .sidebar-item{
  justify-content:center;padding:10px;border-radius:var(--r-sm);
  transition:all .25s cubic-bezier(.4,0,.2,1);
}
body.sidebar-collapsed .sidebar .sidebar-item-icon{margin:0}
body.sidebar-collapsed .sidebar .sidebar-footer{padding:12px 8px;transition:padding .25s cubic-bezier(.4,0,.2,1)}
body.sidebar-collapsed .sidebar .sidebar-user{justify-content:center;padding:8px;transition:all .25s cubic-bezier(.4,0,.2,1)}
body.sidebar-collapsed .sidebar .sidebar-collapse-btn svg{transform:rotate(180deg)}
body.sidebar-collapsed .main-content{margin-left:72px}

/* Expanded state: header/nav/footer padding transitions */
.sidebar .sidebar-header{transition:padding .25s cubic-bezier(.4,0,.2,1)}
.sidebar .sidebar-nav{transition:padding .25s cubic-bezier(.4,0,.2,1)}
.sidebar .sidebar-footer{transition:padding .25s cubic-bezier(.4,0,.2,1)}
.sidebar .sidebar-new-btn{transition:all .25s cubic-bezier(.4,0,.2,1)}
.sidebar .sidebar-item{transition:all .25s cubic-bezier(.4,0,.2,1)}
.sidebar .sidebar-user{transition:all .25s cubic-bezier(.4,0,.2,1)}

/* Tooltip on collapsed items */
body.sidebar-collapsed .sidebar .sidebar-item{position:relative}
body.sidebar-collapsed .sidebar .sidebar-item::after{
  content:attr(data-tooltip);
  position:absolute;left:calc(100% + 8px);top:50%;transform:translateY(-50%);
  background:#1c1c30;color:#fff;
  font-size:12px;font-weight:500;white-space:nowrap;
  padding:4px 10px;border-radius:var(--r-xs);
  pointer-events:none;opacity:0;transition:opacity .15s;
  box-shadow:var(--shadow-md);z-index:200;
}
body.sidebar-collapsed .sidebar .sidebar-item:hover::after{opacity:1}

/* --- Responsive --- */
@media(max-width:1023px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.mobile-open{transform:translateX(0)}
  .main-content{margin-left:0}
  .mobile-nav{display:block}
  .mobile-header{display:flex}
  .page-container{padding:20px 16px calc(80px + var(--safe-bottom))}
  .desktop-only{display:none!important}
}
@media(min-width:1024px){
  .mobile-only{display:none!important}
}

/* === Desktop Enhancements === */
@media(min-width:1280px){
  .page-container{padding:36px 48px}
  .module-grid{grid-template-columns:repeat(3,1fr);gap:16px}
  .stats-row{grid-template-columns:repeat(3,1fr);gap:16px}
  .home-welcome h1{font-size:36px}
}
@media(min-width:1600px){
  .page-container{padding:40px 60px}
  .module-grid{grid-template-columns:repeat(4,1fr);gap:18px}
  .stats-row{grid-template-columns:repeat(4,1fr);gap:18px}
  --content-max:1600px;
}
@media(min-width:1920px){
  .page-container{max-width:1700px}
  .module-grid{grid-template-columns:repeat(4,1fr);gap:20px}
}

/* ===== HOME PAGE ===== */

/* Welcome Section */
.home-welcome{
  padding:40px 0 32px;
}
.home-welcome h1{
  font-size:28px;font-weight:700;
  letter-spacing:-.03em;
  color:var(--text);
  margin-bottom:6px;
}
.home-welcome p{
  font-size:15px;color:var(--text-secondary);
  line-height:1.6;
}
@media(min-width:768px){
  .home-welcome h1{font-size:32px}
}

/* Stats Row */
.stats-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
  margin-bottom:32px;
}
.stat-card{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--r-lg);
  padding:20px;
  transition:all .2s var(--ease-smooth);
}
.stat-card:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-2px)}
.stat-value{
  font-size:28px;font-weight:700;letter-spacing:-.03em;
  color:var(--text);
}
.stat-label{
  font-size:13px;color:var(--text-muted);margin-top:4px;font-weight:500;
}
.stat-icon{
  width:40px;height:40px;border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:12px;font-size:20px;
}
@media(max-width:640px){
  .stats-row{grid-template-columns:1fr;gap:8px}
  .stat-card{padding:16px;display:flex;align-items:center;gap:14px;flex-direction:row-reverse;justify-content:space-between}
  .stat-icon{margin-bottom:0}
  .stat-value{font-size:22px}
}

/* Quick Actions */
.quick-actions{
  display:flex;gap:8px;margin-bottom:32px;
  overflow-x:auto;padding-bottom:4px;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.quick-actions::-webkit-scrollbar{display:none}

.quick-action-btn{
  display:flex;align-items:center;gap:8px;
  padding:10px 18px;
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--r-full);
  font-size:13px;font-weight:600;
  color:var(--text-secondary);
  cursor:pointer;white-space:nowrap;
  transition:all .2s;flex-shrink:0;
}
.quick-action-btn:hover{
  border-color:var(--accent);color:var(--accent);
  background:var(--accent-light);
}
.quick-action-btn.active{
  background:var(--accent);color:#fff;
  border-color:var(--accent);
  box-shadow:0 2px 8px rgba(179,132,52,.2);
}

/* Section Header */
.section-header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:16px;
}
.section-title{
  font-size:18px;font-weight:700;letter-spacing:-.02em;
  color:var(--text);
}
.section-action{
  font-size:13px;font-weight:600;
  color:var(--accent);cursor:pointer;
  transition:opacity .15s;
}
.section-action:hover{opacity:.7}

/* Module Grid */
.module-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:12px;
  margin-bottom:32px;
}
@media(max-width:640px){
  .module-grid{grid-template-columns:1fr 1fr;gap:10px}
}

.module-card{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--r-lg);
  padding:20px;
  cursor:pointer;
  transition:all .25s var(--ease-smooth);
  position:relative;overflow:hidden;
  text-decoration:none;color:inherit;
  display:block;
}
.module-card::before{
  content:'';position:absolute;top:0;left:0;right:0;
  height:3px;background:var(--mod-color,var(--brand-gradient));
  opacity:0;transition:opacity .25s;
}
.module-card:hover{
  border-color:transparent;
  box-shadow:var(--card-shadow-hover);
  transform:translateY(-3px);
}
.module-card:hover::before{opacity:1}
.module-card:active{transform:scale(.98)}

.module-icon{
  width:44px;height:44px;border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:14px;
  background:var(--mod-bg,var(--accent-light));
}
.module-name{
  font-size:15px;font-weight:600;
  color:var(--text);margin-bottom:4px;
  letter-spacing:-.01em;
}
.module-desc{
  font-size:13px;color:var(--text-muted);
  line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}
.module-tag{
  display:inline-flex;align-items:center;gap:4px;
  margin-top:12px;padding:3px 10px;
  border-radius:var(--r-full);
  font-size:11px;font-weight:600;
  background:var(--bg-secondary);
  color:var(--text-muted);
}

@media(max-width:640px){
  .module-card{padding:16px}
  .module-icon{width:38px;height:38px;font-size:18px;margin-bottom:10px}
  .module-name{font-size:14px}
  .module-desc{font-size:12px;-webkit-line-clamp:1}
}

/* Recent History */
.history-list{display:flex;flex-direction:column;gap:2px}
.history-item{
  display:flex;align-items:center;gap:14px;
  padding:14px 16px;
  border-radius:var(--r-md);
  cursor:pointer;transition:all .15s;
}
.history-item:hover{background:var(--bg-secondary)}
.history-icon{
  width:38px;height:38px;border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;flex-shrink:0;
}
.history-body{flex:1;min-width:0}
.history-title{
  font-size:14px;font-weight:500;color:var(--text);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.history-sub{font-size:12px;color:var(--text-muted);margin-top:2px}
.history-time{
  font-size:12px;color:var(--text-muted);flex-shrink:0;
  font-variant-numeric:tabular-nums;
}
.history-date-label{
  font-size:12px;font-weight:600;color:var(--text-muted);
  padding:16px 16px 6px;
  text-transform:uppercase;letter-spacing:.06em;
}

/* Projects */
.project-card{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--r-lg);
  padding:20px;
  cursor:pointer;transition:all .2s;
  margin-bottom:10px;
}
.project-card:hover{box-shadow:var(--card-shadow-hover);border-color:transparent}
.project-header{display:flex;align-items:flex-start;gap:12px}
.project-type-icon{
  width:42px;height:42px;border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;flex-shrink:0;
}
.project-info{flex:1;min-width:0}
.project-name{font-size:15px;font-weight:600;color:var(--text)}
.project-meta{font-size:12px;color:var(--text-muted);margin-top:4px;display:flex;gap:12px;flex-wrap:wrap}
.project-progress{
  margin-top:14px;height:4px;background:var(--bg-secondary);
  border-radius:var(--r-full);overflow:hidden;
}
.project-progress-bar{
  height:100%;background:var(--brand-gradient);
  border-radius:var(--r-full);
  transition:width .5s var(--ease-out);
}
.project-actions-row{
  display:flex;gap:8px;margin-top:14px;flex-wrap:wrap;
}

/* Empty State */
.empty-state{
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  padding:60px 20px;text-align:center;
}
.empty-state-icon{
  font-size:48px;margin-bottom:16px;
  opacity:.5;
}
.empty-state-title{
  font-size:16px;font-weight:600;color:var(--text);
  margin-bottom:6px;
}
.empty-state-desc{
  font-size:14px;color:var(--text-muted);
  max-width:320px;line-height:1.6;
}

/* ===== CHAT PAGE ===== */
.chat-layout{
  display:flex;height:100vh;height:100dvh;
}
/* When inside app-shell, inherit height from main-content */
.app-shell .main-content .chat-sidebar-panel,
.app-shell .main-content .chat-main-area{height:100%}
.chat-sidebar-panel{
  width:300px;
  border-right:1px solid var(--border);
  background:var(--bg-subtle);
  display:flex;flex-direction:column;
  flex-shrink:0;
}
.chat-sidebar-header{
  padding:20px;
  border-bottom:1px solid var(--border-light);
}
.chat-sidebar-list{
  flex:1;overflow-y:auto;padding:8px;
  scrollbar-width:none;
}
.chat-sidebar-list::-webkit-scrollbar{display:none}

.convo-item{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:var(--r-sm);
  cursor:pointer;transition:all .15s;
  margin-bottom:2px;font-size:14px;
  color:var(--text-secondary);
}
.convo-item:hover{background:var(--card);color:var(--text)}
.convo-item.active{background:var(--card);color:var(--text);box-shadow:var(--shadow-xs)}
.convo-item-title{
  flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  font-weight:500;
}
.convo-item-time{font-size:11px;color:var(--text-muted)}

.chat-main-area{
  flex:1;display:flex;flex-direction:column;
  min-width:0;
}
.chat-topbar{
  display:flex;align-items:center;gap:12px;
  padding:12px 24px;height:60px;
  border-bottom:1px solid var(--border-light);
  background:var(--bg-frosted);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  flex-shrink:0;
}
.chat-topbar-back{
  width:36px;height:36px;border-radius:var(--r-full);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);cursor:pointer;
  transition:all .15s;
}
.chat-topbar-back:hover{background:var(--bg-secondary)}
.chat-topbar-title{
  flex:1;font-size:15px;font-weight:600;
  color:var(--text);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.chat-topbar-actions{display:flex;gap:4px}

.chat-messages{
  flex:1;overflow-y:auto;
  -webkit-overflow-scrolling:touch;
  padding:24px;
  display:flex;flex-direction:column;
}
.chat-messages-inner{
  max-width:800px;width:100%;margin:0 auto;
  display:flex;flex-direction:column;
}

@media(min-width:1280px){
  .chat-messages-inner{max-width:880px}
  .chat-input-wrapper{max-width:880px}
  .chat-sidebar-panel{width:340px}
}
@media(min-width:1600px){
  .chat-messages-inner{max-width:960px}
  .chat-input-wrapper{max-width:960px}
}

/* Welcome */
.chat-welcome{
  flex:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  text-align:center;padding:40px 24px;
}
.chat-welcome-logo{
  width:56px;height:56px;border-radius:var(--r-lg);
  background:#f5f0e6;border:1px solid rgba(179,132,52,.15);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;color:#b38434;margin-bottom:24px;
  box-shadow:0 4px 16px rgba(179,132,52,.08);
}
.chat-welcome h2{
  font-size:22px;font-weight:700;letter-spacing:-.02em;
  margin-bottom:8px;
}
.chat-welcome p{
  font-size:14px;color:var(--text-secondary);
  max-width:400px;line-height:1.7;
}
.chat-suggestions{
  display:flex;flex-direction:column;gap:8px;
  width:100%;max-width:420px;margin-top:28px;
}
.chat-suggestion{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--r-md);
  font-size:14px;color:var(--text);
  cursor:pointer;transition:all .2s;
  text-align:left;line-height:1.5;
}
.chat-suggestion:hover{
  border-color:var(--accent);
  background:var(--accent-light);
  transform:translateX(4px);
}
.chat-suggestion-icon{
  color:var(--accent);opacity:.5;flex-shrink:0;
}

/* Messages */
.msg{
  display:flex;gap:14px;margin-bottom:24px;
  animation:msgIn .3s var(--ease-out);
}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}}
.msg-user{flex-direction:row-reverse}
.msg-avatar{
  width:32px;height:32px;border-radius:var(--r-full);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;flex-shrink:0;margin-top:2px;
}
.msg-ai .msg-avatar{
  background:var(--brand-gradient);color:#fff;font-weight:700;
}
.msg-user .msg-avatar{
  background:var(--bg-secondary);color:var(--text-secondary);
}
.msg-body{flex:1;min-width:0;max-width:640px}
.msg-user .msg-body{display:flex;flex-direction:column;align-items:flex-end}
.msg-bubble{
  padding:14px 18px;
  border-radius:var(--r-lg);
  font-size:14px;line-height:1.7;
  word-break:break-word;
}
.msg-ai .msg-bubble{
  background:var(--card);
  border:1px solid var(--card-border);
  color:var(--text);
  border-top-left-radius:var(--r-xs);
}
.msg-user .msg-bubble{
  background:var(--accent);
  color:#fff;
  border-top-right-radius:var(--r-xs);
}
.msg-bubble p{margin-bottom:8px}
.msg-bubble p:last-child{margin-bottom:0}
.msg-bubble code{
  font-family:'JetBrains Mono',monospace;
  font-size:13px;
  background:rgba(0,0,0,.06);
  padding:2px 6px;border-radius:4px;
}
.msg-bubble pre{
  background:var(--sidebar-bg);color:#eae6dc;
  border-radius:var(--r-sm);padding:14px;
  overflow-x:auto;margin:10px 0;
  font-size:13px;line-height:1.6;
}
.msg-bubble pre code{
  background:none;padding:0;color:inherit;
}
.msg-bubble strong{font-weight:600}
.msg-bubble ul,.msg-bubble ol{padding-left:20px;margin:8px 0}
.msg-bubble li{margin-bottom:4px}

.msg-actions{
  display:flex;gap:4px;margin-top:8px;opacity:0;
  transition:opacity .2s;
}
.msg:hover .msg-actions{opacity:1}
.msg-action-btn{
  padding:4px 10px;border-radius:var(--r-xs);
  font-size:12px;color:var(--text-muted);
  cursor:pointer;transition:all .15s;
  display:flex;align-items:center;gap:4px;
}
.msg-action-btn:hover{background:var(--bg-secondary);color:var(--text)}

.msg-time{
  font-size:11px;color:var(--text-muted);
  margin-top:4px;
}

/* Typing indicator */
.typing-indicator{
  display:flex;gap:4px;padding:12px 18px;
}
.typing-indicator span{
  width:6px;height:6px;
  background:var(--text-muted);
  border-radius:50%;
  animation:typeBounce 1.3s infinite;
}
.typing-indicator span:nth-child(2){animation-delay:.15s}
.typing-indicator span:nth-child(3){animation-delay:.3s}
@keyframes typeBounce{
  0%,60%,100%{transform:translateY(0);opacity:.3}
  30%{transform:translateY(-5px);opacity:1}
}

/* Input Area */
.chat-input-area{
  padding:16px 24px calc(16px + var(--safe-bottom));
  border-top:1px solid var(--border-light);
  background:var(--bg);
}
.chat-input-wrapper{
  max-width:720px;margin:0 auto;
  position:relative;
}
.chat-input-box{
  display:flex;align-items:flex-end;gap:8px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-xl);
  padding:8px 8px 8px 18px;
  transition:all .2s;
  box-shadow:var(--shadow-sm);
}
.chat-input-box:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-light),var(--shadow-sm);
}
.chat-input-box textarea{
  flex:1;border:none;background:none;
  resize:none;outline:none;
  font-size:14px;line-height:1.5;
  color:var(--text);
  min-height:24px;max-height:120px;
  padding:6px 0;
  font-family:inherit;
}
.chat-input-box textarea::placeholder{color:var(--text-muted)}

.chat-input-btn{
  width:36px;height:36px;border-radius:var(--r-full);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .15s;flex-shrink:0;
}
.chat-send-btn{
  background:var(--accent);color:#fff;
  box-shadow:0 2px 8px rgba(179,132,52,.2);
}
.chat-send-btn:hover{background:var(--accent-hover)}
.chat-send-btn:disabled{opacity:.3;cursor:not-allowed}
.chat-attach-btn{
  color:var(--text-muted);
}
.chat-attach-btn:hover{color:var(--text);background:var(--bg-secondary)}

.chat-input-hint{
  font-size:12px;color:var(--text-muted);
  text-align:center;margin-top:8px;
}

/* File preview */
.file-preview{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;
  background:var(--accent-light);
  border-radius:var(--r-sm);
  margin-bottom:8px;font-size:13px;
}
.file-preview-name{
  flex:1;overflow:hidden;text-overflow:ellipsis;
  white-space:nowrap;font-weight:500;
}
.file-preview-remove{
  cursor:pointer;color:var(--text-muted);
  transition:color .15s;
}
.file-preview-remove:hover{color:var(--danger)}

/* Citations */
.citation-list{margin-top:10px}
.citation-item{
  display:flex;align-items:flex-start;gap:8px;
  padding:8px 12px;background:var(--bg-secondary);
  border-radius:var(--r-xs);margin-bottom:4px;
  font-size:12px;line-height:1.5;
  cursor:pointer;transition:background .15s;
}
.citation-item:hover{background:var(--accent-light)}
.citation-num{
  width:18px;height:18px;border-radius:50%;
  background:var(--accent-light);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:10px;font-weight:700;flex-shrink:0;
}

/* Risk Panel */
.risk-panel{display:none}
.risk-panel.open{
  display:block;padding:16px;
  border-top:1px solid var(--border-light);
  max-height:40vh;overflow-y:auto;
}
.risk-card{
  border-radius:var(--r-md);padding:14px;
  margin-bottom:8px;border-left:4px solid;
}
.risk-card-high{background:rgba(239,68,68,.06);border-color:var(--danger)}
.risk-card-medium{background:rgba(245,158,11,.06);border-color:var(--warn)}
.risk-card-low{background:rgba(16,185,129,.06);border-color:var(--success)}

/* ===== STUDIO PAGE ===== */
.studio-layout{
  display:flex;height:100vh;height:100dvh;
}
/* When inside app-shell, fill the main-content area */
.app-shell .main-content .studio-layout{height:100%}
.studio-chat-panel{
  width:420px;border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  flex-shrink:0;background:var(--bg);
}
.studio-gallery-panel{
  flex:1;display:flex;flex-direction:column;
  background:var(--bg-secondary);overflow:hidden;
}
.studio-gallery-header{
  padding:16px 24px;
  border-bottom:1px solid var(--border-light);
  display:flex;align-items:center;gap:12px;
  background:var(--bg-frosted);
  backdrop-filter:blur(20px);
}
.studio-gallery-content{
  flex:1;overflow-y:auto;padding:24px;
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:16px;align-content:start;
}
.studio-image-card{
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--card);
  box-shadow:var(--card-shadow);
  transition:all .2s;cursor:pointer;
}
.studio-image-card:hover{
  box-shadow:var(--card-shadow-hover);
  transform:translateY(-2px);
}
.studio-image-card img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
}
.studio-image-info{padding:12px 14px}
.studio-image-title{font-size:13px;font-weight:500}
.studio-image-meta{font-size:11px;color:var(--text-muted);margin-top:4px}

@media(max-width:1023px){
  .studio-layout{flex-direction:column}
  .studio-chat-panel{width:100%;height:50vh;border-right:none;border-bottom:1px solid var(--border)}
  .studio-gallery-panel{height:50vh}
  .chat-sidebar-panel{display:none}
}
@media(min-width:1280px){
  .studio-chat-panel{width:480px}
  .studio-gallery-content{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
}
@media(min-width:1600px){
  .studio-chat-panel{width:540px}
}

/* ===== WORKFLOW PAGE ===== */
.workflow-container{
  max-width:800px;margin:0 auto;
  padding:32px 24px;
}
@media(min-width:1280px){
  .workflow-container{max-width:900px;padding:40px 32px}
}
.workflow-header{
  text-align:center;margin-bottom:32px;
}
.workflow-header h1{
  font-size:24px;font-weight:700;letter-spacing:-.02em;
  margin-bottom:8px;
}
.workflow-header p{
  font-size:14px;color:var(--text-secondary);
}

/* Form */
.form-group{margin-bottom:20px}
.form-label{
  display:block;font-size:13px;font-weight:600;
  color:var(--text-secondary);margin-bottom:6px;
  letter-spacing:.01em;
}
.form-hint{font-size:12px;color:var(--text-muted);margin-top:4px}
.form-input,.form-select,.form-textarea{
  width:100%;padding:11px 14px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  font-size:14px;background:var(--card);
  color:var(--text);transition:all .2s;
  line-height:1.5;
}
.form-input:hover,.form-select:hover,.form-textarea:hover{border-color:var(--text-muted)}
.form-input:focus,.form-select:focus,.form-textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-light);
}
.form-textarea{resize:vertical;min-height:100px}

/* Progress Steps */
.workflow-progress{
  display:flex;align-items:center;gap:8px;
  margin-bottom:32px;padding:0 20px;
}
.workflow-step{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;
  position:relative;
}
.workflow-step::after{
  content:'';position:absolute;top:14px;left:calc(50% + 16px);
  width:calc(100% - 32px);height:2px;
  background:var(--border);
}
.workflow-step:last-child::after{display:none}
.workflow-step.active::after{background:var(--accent)}
.workflow-step.done::after{background:var(--success)}
.workflow-step-dot{
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  background:var(--bg-secondary);color:var(--text-muted);
  z-index:1;transition:all .3s;
  border:2px solid transparent;
}
.workflow-step.active .workflow-step-dot{
  background:var(--accent);color:#fff;
  box-shadow:0 2px 8px rgba(179,132,52,.25);
}
.workflow-step.done .workflow-step-dot{
  background:var(--success);color:#fff;
}
.workflow-step-label{
  font-size:11px;font-weight:600;
  color:var(--text-muted);white-space:nowrap;
}
.workflow-step.active .workflow-step-label{color:var(--accent)}
.workflow-step.done .workflow-step-label{color:var(--success)}

/* Result output */
.workflow-result{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--r-lg);
  padding:24px;
  margin-top:24px;
}
.workflow-result-content{
  font-size:14px;line-height:1.8;
  color:var(--text);
}

/* ===== ADMIN PAGE ===== */
.admin-hero{
  background:var(--sidebar-bg);
  color:#fff;border-radius:var(--r-xl);
  padding:32px;margin-bottom:28px;
  position:relative;overflow:hidden;
}
.admin-hero::after{
  content:'';position:absolute;top:-50%;right:-20%;
  width:300px;height:300px;
  background:radial-gradient(circle,rgba(179,132,52,.2) 0%,transparent 70%);
  border-radius:50%;
}
.admin-hero h2{font-size:22px;font-weight:700;margin-bottom:4px;position:relative}
.admin-hero p{font-size:14px;opacity:.7;position:relative}

.admin-stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:14px;margin-top:24px;position:relative;
}
@media(max-width:768px){.admin-stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1280px){.admin-stats-grid{gap:18px}}
.admin-stat{
  background:rgba(255,255,255,.08);
  border-radius:var(--r-md);padding:16px;
  backdrop-filter:blur(8px);
}
.admin-stat-value{font-size:24px;font-weight:700}
.admin-stat-label{font-size:12px;opacity:.6;margin-top:2px}

.admin-table{
  width:100%;border-collapse:separate;border-spacing:0;
  font-size:14px;
}
.admin-table th{
  text-align:left;padding:12px 16px;
  font-size:12px;font-weight:600;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:.05em;
  border-bottom:1px solid var(--border-light);
  background:var(--bg-subtle);
  position:sticky;top:0;
}
.admin-table td{
  padding:14px 16px;
  border-bottom:1px solid var(--border-light);
}
.admin-table tr:hover td{background:var(--card-hover)}
.admin-table tr:last-child td{border-bottom:none}

/* ===== COMMON COMPONENTS ===== */

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-md);
  font-size:14px;font-weight:600;
  transition:all .2s var(--ease-smooth);
  white-space:nowrap;line-height:1.4;
  cursor:pointer;border:none;
}
.btn:active{transform:scale(.97)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-primary{
  background:var(--accent);color:#fff;
  box-shadow:0 1px 3px rgba(179,132,52,.2);
}
.btn-primary:hover:not(:disabled){
  background:var(--accent-hover);
  box-shadow:0 4px 12px rgba(179,132,52,.25);
}
.btn-gradient{
  background:var(--brand-gradient);color:#fff;
  box-shadow:0 2px 10px rgba(179,132,52,.2);
}
.btn-gradient:hover:not(:disabled){
  box-shadow:0 4px 16px rgba(179,132,52,.3);
  filter:brightness(1.05);
}
.btn-secondary{
  background:var(--bg-secondary);color:var(--text);
  border:1px solid var(--border);
}
.btn-secondary:hover:not(:disabled){background:var(--border-light)}
.btn-ghost{background:transparent;color:var(--accent);padding:8px 14px}
.btn-ghost:hover{background:var(--accent-light)}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:7px 14px;font-size:13px;border-radius:var(--r-sm)}
.btn-lg{padding:13px 28px;font-size:15px;border-radius:var(--r-lg)}
.btn-block{width:100%}
.btn-icon{
  width:36px;height:36px;padding:0;
  border-radius:var(--r-full);
}

/* Badge */
.badge{
  display:inline-flex;align-items:center;gap:4px;
  padding:3px 10px;border-radius:var(--r-full);
  font-size:11px;font-weight:600;
}
.badge-primary{background:var(--accent-light);color:var(--accent)}
.badge-success{background:var(--success-bg);color:var(--success)}
.badge-warn{background:var(--warn-bg);color:var(--warn)}
.badge-danger{background:var(--danger-bg);color:var(--danger)}

/* Modal */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:200;
  background:var(--bg-overlay);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  align-items:center;justify-content:center;
  padding:24px;
}
.modal-overlay.active{display:flex}
.modal-card{
  background:var(--card);
  border-radius:var(--r-xl);
  width:100%;max-width:480px;
  max-height:90vh;overflow-y:auto;
  animation:modalIn .25s var(--ease-spring);
  box-shadow:var(--shadow-xl);
}
@keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(10px)}}
.modal-header{
  padding:24px 24px 0;
  display:flex;align-items:center;justify-content:space-between;
}
.modal-title{font-size:18px;font-weight:700;letter-spacing:-.02em}
.modal-close{
  width:32px;height:32px;border-radius:var(--r-full);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-muted);cursor:pointer;transition:all .15s;
}
.modal-close:hover{background:var(--bg-secondary);color:var(--text)}
.modal-body{padding:20px 24px}
.modal-footer{
  padding:16px 24px 24px;
  display:flex;gap:8px;justify-content:flex-end;
}

/* Toast */
.toast{
  position:fixed;top:24px;left:50%;transform:translateX(-50%);
  padding:12px 24px;border-radius:var(--r-full);
  font-size:14px;font-weight:500;z-index:999;
  box-shadow:var(--shadow-lg);
  animation:toastIn .3s var(--ease-spring);
  max-width:90%;text-align:center;
  backdrop-filter:blur(12px);
}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(-12px)}}
.toast-info{background:var(--sidebar-bg);color:#fff}
.toast-success{background:#059669;color:#fff}
.toast-error{background:#DC2626;color:#fff}

/* Timeline */
.timeline{position:relative;padding-left:24px}
.timeline::before{
  content:'';position:absolute;left:8px;top:4px;bottom:4px;
  width:2px;background:var(--border);
}
.timeline-item{
  position:relative;margin-bottom:20px;
  padding-left:20px;
}
.timeline-dot{
  position:absolute;left:-20px;top:4px;
  width:12px;height:12px;border-radius:50%;
  border:2px solid var(--card);
}
.timeline-dot-blue{background:var(--accent)}
.timeline-dot-green{background:var(--success)}
.timeline-dot-gray{background:var(--text-muted)}
.timeline-time{font-size:12px;color:var(--text-muted);margin-bottom:2px}
.timeline-content{font-size:14px;color:var(--text)}

/* Tabs */
.tabs{
  display:flex;gap:0;
  border-bottom:1px solid var(--border-light);
}
.tab-item{
  padding:10px 20px;font-size:14px;font-weight:600;
  color:var(--text-muted);cursor:pointer;
  border-bottom:2px solid transparent;
  transition:all .2s;margin-bottom:-1px;
}
.tab-item:hover{color:var(--text)}
.tab-item.active{
  color:var(--accent);
  border-bottom-color:var(--accent);
}

/* Quota */
.quota-bar{
  height:6px;background:var(--bg-secondary);
  border-radius:var(--r-full);overflow:hidden;
  margin:8px 0;
}
.quota-fill{
  height:100%;border-radius:var(--r-full);
  background:var(--brand-gradient);
  transition:width .5s var(--ease-out);
}

/* Lightbox */
.lightbox{
  display:none;position:fixed;inset:0;z-index:300;
  background:rgba(0,0,0,.9);
  align-items:center;justify-content:center;
  flex-direction:column;
}
.lightbox.active{display:flex}
.lightbox img{
  max-width:90%;max-height:80vh;
  object-fit:contain;border-radius:var(--r-md);
}
.lightbox-close{
  position:absolute;top:20px;right:20px;
  width:40px;height:40px;border-radius:var(--r-full);
  background:rgba(255,255,255,.1);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;cursor:pointer;border:none;
  transition:background .15s;
}
.lightbox-close:hover{background:rgba(255,255,255,.2)}
.lightbox-nav{
  display:flex;gap:16px;margin-top:20px;
  align-items:center;
}
.lightbox-nav button{
  padding:8px 16px;border-radius:var(--r-full);
  background:rgba(255,255,255,.1);color:#fff;
  font-size:13px;cursor:pointer;border:none;
  transition:background .15s;
}
.lightbox-nav button:hover{background:rgba(255,255,255,.2)}

/* Onboarding */
.onboarding-overlay{
  display:none;position:fixed;inset:0;z-index:300;
  background:var(--bg-overlay);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  align-items:center;justify-content:center;padding:24px;
}
.onboarding-overlay.active{display:flex}
.onboarding-card{
  background:var(--card);border-radius:var(--r-2xl);
  padding:48px 36px;max-width:440px;width:100%;
  text-align:center;
  animation:modalIn .35s var(--ease-spring);
  box-shadow:var(--shadow-xl);
}

/* Dev Login */
.dev-login{
  background:rgba(245,158,11,.06);
  border:1px solid rgba(245,158,11,.15);
  border-radius:var(--r-md);padding:12px 16px;
  margin-bottom:16px;font-size:13px;
  display:flex;align-items:center;gap:8px;
  flex-wrap:wrap;
}
.dev-login select,.dev-login input{
  padding:6px 10px;border:1px solid var(--border);
  border-radius:var(--r-xs);font-size:13px;
  background:var(--card);
}

/* Dashed new button */
.new-btn{
  width:100%;padding:16px;
  background:none;border:2px dashed var(--border);
  border-radius:var(--r-lg);color:var(--text-muted);
  font-size:14px;cursor:pointer;font-weight:600;
  transition:all .2s;display:flex;
  align-items:center;justify-content:center;gap:8px;
}
.new-btn:hover{
  border-color:var(--accent);color:var(--accent);
  background:var(--accent-light);
}

/* Utility */
.flex{display:flex}.flex-col{flex-direction:column}
.flex-1{flex:1}.items-center{align-items:center}
.justify-between{justify-content:space-between}
.gap-4{gap:4px}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}
.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}
.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.mb-16{margin-bottom:16px}
.text-sm{font-size:13px}.text-xs{font-size:12px}.text-muted{color:var(--text-muted)}
.hidden{display:none!important}
.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.w-full{width:100%}

/* Animations */
.fade-in{animation:fadeIn .3s var(--ease-out)}
@keyframes fadeIn{from{opacity:0}}
.slide-up{animation:slideUp .4s var(--ease-out)}
@keyframes slideUp{from{opacity:0;transform:translateY(16px)}}
.scale-in{animation:scaleIn .25s var(--ease-spring)}
@keyframes scaleIn{from{opacity:0;transform:scale(.95)}}

/* ===== DARK THEME ===== */
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#14142a;
    --bg-secondary:#1c1c30;
    --bg-elevated:#2a2a45;
    --bg-frosted:rgba(28,28,48,.85);
    --bg-overlay:rgba(0,0,0,.7);
    --bg-subtle:#1c1c30;
    --card:#2a2a45;
    --card-border:rgba(255,255,255,.06);
    --card-hover:rgba(179,132,52,.06);
    --card-shadow:0 1px 3px rgba(0,0,0,.2),0 1px 2px rgba(0,0,0,.1);
    --card-shadow-hover:0 8px 30px rgba(0,0,0,.3);
    --border:#3a3a55;
    --border-light:#2a2a45;
    --text:#faf8f5;
    --text-secondary:#a0a0b0;
    --text-muted:#6e6e82;
    --text3:#6e6e82;
    --accent-light:rgba(179,132,52,.15);
    --accent-bg:rgba(179,132,52,.12);
    --success-bg:rgba(16,185,129,.15);
    --warn-bg:rgba(245,158,11,.12);
    --danger-bg:rgba(181,58,58,.12);
    --info-bg:rgba(110,110,130,.12);
    --sidebar-bg:#111120;
    --sidebar-border:rgba(255,255,255,.04);
  }
}
[data-theme="dark"]{
  --bg:#14142a;
  --bg-secondary:#1c1c30;
  --bg-elevated:#2a2a45;
  --bg-frosted:rgba(28,28,48,.85);
  --bg-overlay:rgba(0,0,0,.7);
  --bg-subtle:#1c1c30;
  --card:#2a2a45;
  --card-border:rgba(255,255,255,.06);
  --card-hover:rgba(179,132,52,.06);
  --card-shadow:0 1px 3px rgba(0,0,0,.2),0 1px 2px rgba(0,0,0,.1);
  --card-shadow-hover:0 8px 30px rgba(0,0,0,.3);
  --border:#3a3a55;
  --border-light:#2a2a45;
  --text:#faf8f5;
  --text-secondary:#a0a0b0;
  --text-muted:#6e6e82;
  --text3:#6e6e82;
  --accent-light:rgba(179,132,52,.15);
  --accent-bg:rgba(179,132,52,.12);
  --success-bg:rgba(16,185,129,.15);
  --warn-bg:rgba(245,158,11,.12);
  --danger-bg:rgba(181,58,58,.12);
  --info-bg:rgba(110,110,130,.12);
  --sidebar-bg:#111120;
  --sidebar-border:rgba(255,255,255,.04);
}

/* Dark theme message bubbles */
[data-theme="dark"] .msg-user .msg-bubble,
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .msg-user .msg-bubble{background:var(--accent)}}
[data-theme="dark"] .msg-ai .msg-bubble{background:var(--card);border-color:var(--card-border)}

/* ===== NOTIFICATION PANEL ===== */
.notif-panel{
  display:none;position:fixed;top:0;right:0;bottom:0;
  width:380px;max-width:100vw;
  background:var(--card);
  box-shadow:-4px 0 30px rgba(0,0,0,.12);
  z-index:200;
  flex-direction:column;
  animation:notifSlideIn .3s var(--ease-out);
  border-left:1px solid var(--border-light);
}
.notif-panel.open{display:flex}
@keyframes notifSlideIn{from{transform:translateX(100%)}to{transform:translateX(0)}}
.notif-header{
  display:flex;align-items:center;gap:12px;
  padding:20px;border-bottom:1px solid var(--border-light);
  flex-shrink:0;
}
.notif-header-title{font-size:16px;font-weight:700;flex:1}
.notif-list{flex:1;overflow-y:auto;padding:8px}
.notif-item{
  display:flex;gap:12px;padding:14px 12px;
  border-radius:var(--r-md);cursor:pointer;
  transition:background .15s;
}
.notif-item:hover{background:var(--bg-secondary)}
.notif-item.unread{background:var(--accent-light)}
.notif-icon{
  width:36px;height:36px;border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;flex-shrink:0;
}
.notif-body{flex:1;min-width:0}
.notif-title{font-size:13px;font-weight:500;line-height:1.4}
.notif-time{font-size:11px;color:var(--text-muted);margin-top:4px}
.notif-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);flex-shrink:0;
  margin-top:6px;
}
.notif-empty{
  display:flex;flex-direction:column;align-items:center;
  justify-content:center;padding:40px;text-align:center;
  color:var(--text-muted);
}
.notif-backdrop{
  display:none;position:fixed;inset:0;z-index:199;
  background:var(--bg-overlay);
}
.notif-backdrop.open{display:block}

/* ===== THEME TOGGLE ===== */
.theme-toggle{
  display:flex;align-items:center;
  gap:6px;padding:8px 12px;
  border-radius:var(--r-sm);
  cursor:pointer;transition:background .15s;
  color:var(--sidebar-text);
  font-size:13px;
}
.theme-toggle:hover{background:var(--sidebar-hover)}
.theme-toggle-track{
  width:36px;height:20px;border-radius:10px;
  background:rgba(255,255,255,.15);
  position:relative;transition:background .3s;
}
.theme-toggle-thumb{
  position:absolute;top:2px;left:2px;
  width:16px;height:16px;border-radius:50%;
  background:#fff;transition:transform .3s;
}
[data-theme="dark"] .theme-toggle-thumb{transform:translateX(16px)}

/* ===== TEMPLATE SELECTOR ===== */
.template-selector{
  display:flex;gap:8px;margin-bottom:20px;
  overflow-x:auto;padding-bottom:4px;
  scrollbar-width:none;
}
.template-selector::-webkit-scrollbar{display:none}
.template-card{
  flex-shrink:0;width:160px;padding:14px;
  background:var(--card);border:2px solid var(--border-light);
  border-radius:var(--r-md);cursor:pointer;
  transition:all .2s;text-align:center;
}
.template-card:hover{border-color:var(--accent)}
.template-card.active{border-color:var(--accent);background:var(--accent-light)}
.template-card-icon{font-size:28px;margin-bottom:6px}
.template-card-name{font-size:13px;font-weight:600}
.template-card-desc{font-size:11px;color:var(--text-muted);margin-top:2px}