/* ══════════════════════════════════════════════════════════
   新闻传播学院视频生成平台 — Original Design System
   Academic Blue + Warm Gold Theme
   ══════════════════════════════════════════════════════════ */

/* ── CSS Variables / Theme ─────────────────────────────── */
:root {
  --blue-900: #1a365d;
  --blue-800: #2a4365;
  --blue-700: #2c5282;
  --blue-600: #3182ce;
  --blue-500: #4299e1;
  --blue-400: #63b3ed;
  --blue-100: #ebf4ff;
  --blue-50: #f0f5ff;

  --gold-700: #b7791f;
  --gold-500: #d69e2e;
  --gold-400: #ecc94b;
  --gold-100: #fefcbf;

  --bg: #f7f8fa;
  --fg: #1a202c;
  --card: #ffffff;
  --card-fg: #1a202c;
  --border: #e2e8f0;
  --muted: #edf2f7;
  --muted-fg: #718096;
  --accent: #2b6cb0;
  --accent-fg: #ffffff;
  --gold: #b7791f;
  --gold-light: #d69e2e;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(26,54,93,0.06);
  --shadow: 0 4px 16px rgba(26,54,93,0.08);
  --shadow-lg: 0 12px 40px rgba(26,54,93,0.12);
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

.dark {
  --bg: #171923;
  --fg: #e2e8f0;
  --card: #1e2532;
  --card-fg: #e2e8f0;
  --border: #2d3748;
  --muted: #232b3b;
  --muted-fg: #a0aec0;
  --accent: #4299e1;
  --accent-fg: #ffffff;
  --gold: #ecc94b;
  --gold-light: #f6e05e;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
}

/* ── Reset & Base ──────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--fg);
  line-height:1.65;min-height:100vh;
  transition:background var(--transition),color var(--transition);
  letter-spacing:-0.01em;
}
a{color:inherit;text-decoration:none}
button{cursor:pointer;border:none;background:none;font:inherit;color:inherit}
input,textarea{font:inherit;color:inherit;border:none;outline:none;background:none}

/* ── Layout ────────────────────────────────────────────── */
.app-layout{display:flex;height:100vh;overflow:hidden}
.sidebar{
  width:260px;flex-shrink:0;background:var(--card);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:10;
}
.main-area{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}
.navbar{
  height:60px;flex-shrink:0;display:flex;align-items:center;gap:14px;
  padding:0 24px;border-bottom:1px solid var(--border);
  background:var(--bg);z-index:20;
}
.page-content{flex:1;overflow-y:auto}

/* ── Sidebar ───────────────────────────────────────────── */
.sidebar-brand{
  padding:22px 20px 18px;border-bottom:1px solid var(--border);
}
.sidebar-brand .logo-icon{
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--blue-700),var(--blue-500));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:12px;
}
.sidebar-brand .plat-name{
  font-size:15px;font-weight:700;color:var(--fg);line-height:1.3;
}
.sidebar-brand .plat-sub{
  font-size:11px;color:var(--muted-fg);margin-top:2px;
  letter-spacing:0.3px;
}
.sidebar-nav{flex:1;overflow-y:auto;padding:14px 10px}
.nav-section{margin-bottom:22px}
.nav-section-title{
  padding:0 12px 8px;font-size:10.5px;font-weight:700;
  text-transform:uppercase;letter-spacing:1px;color:var(--muted-fg);
}
.nav-item{
  display:flex;align-items:center;gap:10px;padding:9px 12px;
  border-radius:8px;font-size:13.5px;font-weight:500;
  color:var(--muted-fg);transition:all var(--transition);
  position:relative;
}
.nav-item:hover{color:var(--fg);background:var(--muted)}
.nav-item.active{
  color:var(--accent);background:var(--blue-100);
  font-weight:600;
}
.dark .nav-item.active{background:rgba(66,153,225,0.12)}
.nav-item.active::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;background:var(--accent);border-radius:0 3px 3px 0;
}
.nav-item .icon{font-size:17px;width:22px;text-align:center;flex-shrink:0}
.sidebar-footer{
  padding:14px 16px;border-top:1px solid var(--border);
  font-size:11px;color:var(--muted-fg);
  display:flex;align-items:center;gap:6px;
}

/* ── Navbar ────────────────────────────────────────────── */
.navbar .brand-link{display:flex;align-items:center;gap:8px}
.navbar .brand-icon{
  width:34px;height:34px;border-radius:8px;
  background:linear-gradient(135deg,var(--blue-700),var(--blue-500));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;
}
.navbar .brand-text{font-size:16px;font-weight:700;color:var(--fg)}
.navbar .brand-text .accent-dot{color:var(--gold)}
.nav-sep{flex:1}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:7px;padding:9px 18px;
  border-radius:8px;font-size:13.5px;font-weight:600;letter-spacing:0.01em;
  transition:all var(--transition);white-space:nowrap;
}
.btn-primary{background:var(--blue-700);color:#fff}
.btn-primary:hover{background:var(--blue-800);box-shadow:0 4px 12px rgba(26,54,93,0.3);transform:translateY(-1px)}
.btn-accent{background:linear-gradient(135deg,var(--gold-500),var(--gold-700));color:#fff}
.btn-accent:hover{box-shadow:0 4px 14px rgba(183,121,31,0.3);transform:translateY(-1px)}
.btn-outline{border:1.5px solid var(--blue-700);color:var(--blue-700);background:transparent}
.btn-outline:hover{background:var(--blue-50)}
.dark .btn-outline{border-color:var(--blue-500);color:var(--blue-400)}
.dark .btn-outline:hover{background:rgba(66,153,225,0.1)}
.btn-ghost{padding:7px 10px;border-radius:8px;color:var(--muted-fg);font-size:18px}
.btn-ghost:hover{color:var(--fg);background:var(--muted)}
.btn-sm{padding:6px 14px;font-size:12.5px;border-radius:7px}

/* ── Cards ─────────────────────────────────────────────── */
.card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);
  transition:all var(--transition);
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}

/* ── Agent Cards Grid ──────────────────────────────────── */
.agent-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:18px;
}
.agent-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:26px 22px;box-shadow:var(--shadow-sm);
  transition:all 0.3s;cursor:pointer;display:block;color:inherit;overflow:hidden;
}
.agent-card::after{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue-700),var(--blue-500));
  transform:scaleX(0);transform-origin:left;transition:transform 0.3s;
}
.agent-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.agent-card:hover::after{transform:scaleX(1)}
.agent-card .card-icon{
  width:48px;height:48px;border-radius:12px;display:flex;
  align-items:center;justify-content:center;font-size:24px;
  margin-bottom:14px;
  background:linear-gradient(135deg,var(--blue-100),var(--blue-50));
}
.dark .agent-card .card-icon{background:linear-gradient(135deg,rgba(66,153,225,0.12),rgba(66,153,225,0.05))}
.agent-card .card-badge{
  display:inline-block;padding:2px 10px;border-radius:100px;
  font-size:10.5px;font-weight:700;letter-spacing:0.5px;
  background:var(--blue-100);color:var(--blue-700);
  margin-bottom:10px;text-transform:uppercase;
}
.dark .agent-card .card-badge{background:rgba(66,153,225,0.15);color:var(--blue-400)}
.agent-card .name{font-size:16px;font-weight:700;margin-bottom:4px}
.agent-card .desc{font-size:13px;color:var(--muted-fg);line-height:1.6}
.agent-card.featured{grid-column:span 2}

/* ── Hero ──────────────────────────────────────────────── */
.hero{
  position:relative;padding:70px 32px 56px;overflow:hidden;
  background:linear-gradient(180deg,var(--blue-50) 0%,var(--bg) 100%);
}
.dark .hero{background:linear-gradient(180deg,rgba(26,54,93,0.15) 0%,var(--bg) 100%)}
.hero-inner{max-width:900px;margin:0 auto;text-align:center;position:relative;z-index:1}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:100px;
  border:1.5px solid var(--blue-100);
  background:rgba(255,255,255,0.7);backdrop-filter:blur(8px);
  font-size:13px;font-weight:600;color:var(--blue-700);
  margin-bottom:28px;letter-spacing:0.3px;
}
.dark .hero-eyebrow{background:rgba(30,37,50,0.7);border-color:rgba(66,153,225,0.2);color:var(--blue-400)}
.hero h1{
  font-size:clamp(2rem,4.5vw,3.2rem);font-weight:800;
  line-height:1.2;margin-bottom:18px;letter-spacing:-0.02em;
}
.hero h1 .highlight{
  background:linear-gradient(135deg,var(--blue-700) 0%,var(--blue-500) 50%,var(--gold-500) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p{
  font-size:17px;color:var(--muted-fg);max-width:560px;
  margin:0 auto 32px;line-height:1.7;
}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-stats{
  display:flex;gap:40px;justify-content:center;margin-top:44px;
  flex-wrap:wrap;
}
.hero-stat{text-align:center}
.hero-stat .num{font-size:28px;font-weight:800;color:var(--blue-700)}
.dark .hero-stat .num{color:var(--blue-400)}
.hero-stat .label{font-size:12.5px;color:var(--muted-fg);margin-top:2px}

/* ── Section ───────────────────────────────────────────── */
.section{
  padding:64px 24px;max-width:1200px;margin:0 auto;
}
.section-header{text-align:center;margin-bottom:44px}
.section-header .section-tag{
  display:inline-block;padding:3px 12px;border-radius:100px;
  font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
  background:var(--blue-100);color:var(--blue-700);margin-bottom:14px;
}
.dark .section-header .section-tag{background:rgba(66,153,225,0.12);color:var(--blue-400)}
.section-header h2{font-size:28px;font-weight:800;margin-bottom:8px;letter-spacing:-0.01em}
.section-header p{font-size:15px;color:var(--muted-fg);max-width:500px;margin:0 auto}

/* ── Features ──────────────────────────────────────────── */
.features-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));
  gap:20px;
}
.feature-card{
  display:flex;gap:18px;padding:24px;border-radius:var(--radius-lg);
  border:1px solid var(--border);background:var(--card);
  box-shadow:var(--shadow-sm);transition:all var(--transition);
}
.feature-card:hover{border-color:var(--blue-300);box-shadow:var(--shadow)}
.feature-card .ficon{
  width:50px;height:50px;border-radius:12px;display:flex;
  align-items:center;justify-content:center;font-size:22px;flex-shrink:0;
  background:var(--blue-50);
}
.dark .feature-card .ficon{background:rgba(66,153,225,0.1)}
.feature-card h4{font-size:15px;font-weight:700;margin-bottom:3px}
.feature-card p{font-size:13px;color:var(--muted-fg);line-height:1.6}

/* ── Chat Layout ───────────────────────────────────────── */
.chat-layout{display:flex;height:calc(100vh - 60px);--chat-panel-width:420px}
.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}
.chat-panel{
  width:var(--chat-panel-width);flex-shrink:0;border-left:1px solid var(--border);
  background:var(--card);display:flex;flex-direction:column;
}
.chat-resizer{
  width:14px;flex:0 0 14px;cursor:col-resize;background:rgba(148,163,184,.08);
  border-left:1px solid var(--border);border-right:1px solid var(--border);position:relative;z-index:5;
}
.chat-resizer::after{
  content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:3px;height:64px;border-radius:999px;background:var(--border);
}
.chat-resizer:hover{background:rgba(37,99,235,.14)}
.chat-resizer:hover::after{background:var(--accent)}
body.resizing-chat-panel{cursor:col-resize;user-select:none}
@media(max-width:700px){
  .chat-layout{display:block;height:auto}
  .chat-resizer{display:none}
  .chat-panel{width:auto;border-left:0;border-top:1px solid var(--border);min-height:420px}
}
.agent-header{
  display:flex;align-items:center;gap:12px;padding:16px 20px;
  border-bottom:1px solid var(--border);
}
.agent-header .aicon{
  width:44px;height:44px;border-radius:10px;display:flex;
  align-items:center;justify-content:center;font-size:22px;
  background:var(--blue-50);flex-shrink:0;
}
.dark .agent-header .aicon{background:rgba(66,153,225,0.12)}
.agent-header h2{font-size:16px;font-weight:700}
.agent-header .role{font-size:12.5px;color:var(--muted-fg)}

/* Mode toggle */
.mode-bar{
  display:flex;gap:6px;padding:10px 16px;border-bottom:1px solid var(--border);
}
.mode-btn{
  flex:1;text-align:center;padding:8px;border-radius:8px;
  font-size:12.5px;font-weight:600;transition:all var(--transition);
  color:var(--muted-fg);border:1.5px solid transparent;
}
.mode-btn.active{
  background:var(--blue-50);color:var(--blue-700);border-color:var(--blue-200);
}
.dark .mode-btn.active{background:rgba(66,153,225,0.12);color:var(--blue-400);border-color:rgba(66,153,225,0.25)}

/* Messages */
.chat-messages{flex:1;overflow-y:auto;padding:18px 16px}
.chat-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  height:100%;text-align:center;padding:32px;
}
.chat-empty .empty-icon{
  width:72px;height:72px;border-radius:20px;display:flex;
  align-items:center;justify-content:center;font-size:32px;
  background:var(--blue-50);margin-bottom:16px;
}
.dark .chat-empty .empty-icon{background:rgba(66,153,225,0.08)}
.chat-empty h3{font-size:16px;font-weight:700;margin-bottom:4px}
.chat-empty p{font-size:13px;color:var(--muted-fg)}
.chat-msg{display:flex;gap:10px;margin-bottom:18px;animation:fadeIn 0.3s ease}
.chat-msg.user{flex-direction:row-reverse}
.chat-msg .avatar{
  width:34px;height:34px;border-radius:10px;display:flex;
  align-items:center;justify-content:center;font-size:15px;flex-shrink:0;
}
.chat-msg .avatar.agent{background:var(--blue-100)}
.dark .chat-msg .avatar.agent{background:rgba(66,153,225,0.15)}
.chat-msg .avatar.user{background:var(--gold-100)}
.dark .chat-msg .avatar.user{background:rgba(236,201,75,0.15)}
.chat-msg .bubble{
  max-width:72%;padding:10px 16px;border-radius:14px;font-size:13.5px;line-height:1.65;
}
.chat-msg.agent .bubble{
  background:var(--muted);border-bottom-left-radius:4px;color:var(--fg);
}
.chat-msg.user .bubble{
  background:var(--blue-700);color:#fff;border-bottom-right-radius:4px;
}

/* Input */
.chat-input-area{padding:14px 16px;border-top:1px solid var(--border)}
.chat-input-wrap{
  display:flex;align-items:flex-end;gap:8px;
  background:var(--bg);border:1.5px solid var(--border);
  border-radius:12px;padding:5px 5px 5px 14px;
  transition:border-color var(--transition);
}
.chat-input-wrap:focus-within{border-color:var(--blue-500)}
.chat-input-wrap textarea{
  flex:1;resize:none;padding:7px 0;font-size:13.5px;max-height:100px;
  background:transparent;color:var(--fg);
}
.chat-input-wrap textarea::placeholder{color:var(--muted-fg)}
.chat-input-wrap .send-btn{
  width:38px;height:38px;border-radius:10px;
  background:var(--blue-700);color:#fff;display:flex;
  align-items:center;justify-content:center;font-size:15px;
  transition:all var(--transition);flex-shrink:0;
}
.chat-input-wrap .send-btn:hover{background:var(--blue-800)}
.chat-input-wrap .send-btn:disabled{opacity:0.3;pointer-events:none}

/* Output panel */
.panel-header{
  padding:14px 18px;border-bottom:1px solid var(--border);
  font-size:13.5px;font-weight:700;display:flex;align-items:center;gap:8px;
}
.panel-body{flex:1;overflow-y:auto;padding:16px}
.panel-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;
  height:100%;text-align:center;padding:24px;color:var(--muted-fg)}
.panel-placeholder .ph-icon{font-size:40px;margin-bottom:12px;opacity:0.5}
.panel-placeholder p{font-size:13px;line-height:1.7}
.panel-output{font-size:12px;font-family:'JetBrains Mono','Fira Code',monospace;
  line-height:1.6;white-space:pre-wrap;color:var(--fg);}

/* ── Workspace / Pipeline ──────────────────────────────── */
.pipeline-wrapper{max-width:1100px;margin:0 auto}
.workflow-intro{
  max-width:640px;margin:0 auto 36px;
  background:var(--card);border:1.5px solid var(--border);
  border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-sm);
}
.workflow-intro label{font-size:14px;font-weight:700;display:block;margin-bottom:10px}
.workflow-intro textarea{
  width:100%;min-height:110px;padding:14px;font-size:14px;
  background:var(--bg);border:1.5px solid var(--border);
  border-radius:10px;resize:vertical;transition:border-color var(--transition);
}
.workflow-intro textarea:focus{border-color:var(--blue-500)}
.workflow-intro textarea::placeholder{color:var(--muted-fg)}
.workflow-intro .wf-footer{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:14px;flex-wrap:wrap;gap:10px;
}
.workflow-intro .wf-hint{font-size:12px;color:var(--muted-fg)}

/* Pipeline nodes */
.pipeline-header{
  display:flex;align-items:center;gap:16px;margin-bottom:20px;
}
.pipeline-header .ph-counter{font-size:15px;font-weight:700}
.progress-track{
  height:5px;background:var(--border);border-radius:3px;margin-bottom:28px;overflow:hidden;
}
.progress-fill{
  height:100%;background:linear-gradient(90deg,var(--blue-700),var(--blue-500));
  border-radius:3px;transition:width 0.6s ease;
}
.pipeline-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:12px;margin-bottom:24px}
@media(max-width:1000px){.pipeline-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:560px){.pipeline-grid{grid-template-columns:repeat(2,1fr)}}
.pipeline-node{
  position:relative;padding:18px 12px 14px;border-radius:var(--radius-lg);
  border:2px solid var(--border);text-align:center;
  transition:all 0.35s;background:var(--card);cursor:pointer;overflow:hidden;
}
.pipeline-node::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--border);transition:background 0.3s;
}
.pipeline-node.running{
  border-color:var(--blue-500);background:var(--blue-50);
  box-shadow:0 0 0 4px rgba(66,153,225,0.08);
}
.pipeline-node.running::before{background:var(--blue-500)}
.pipeline-node.completed{
  border-color:#48bb78;background:#f0fff4;
}
.pipeline-node.completed::before{background:#48bb78}
.dark .pipeline-node.running{background:rgba(66,153,225,0.06)}
.dark .pipeline-node.completed{background:rgba(72,187,120,0.05)}
.pipeline-node .pn-icon{font-size:26px;display:block;margin-bottom:8px}
.pipeline-node .pn-name{font-weight:700;font-size:13px;margin-bottom:3px}
.pipeline-node .pn-status{font-size:11px;color:var(--muted-fg)}
.pipeline-node .pn-loading{
  display:inline-block;width:10px;height:10px;border:2px solid var(--border);
  border-top-color:var(--blue-500);border-radius:50%;
  animation:spin 0.7s linear infinite;margin-right:4px;vertical-align:middle;
}

/* Done screen */
.done-screen{text-align:center;padding:56px 24px}
.done-screen .done-icon{
  width:88px;height:88px;border-radius:24px;display:flex;align-items:center;
  justify-content:center;font-size:42px;margin:0 auto 20px;
  background:linear-gradient(135deg,#f0fff4,#c6f6d5);
}
.dark .done-screen .done-icon{background:linear-gradient(135deg,rgba(72,187,120,0.1),rgba(72,187,120,0.05))}
.done-screen h2{font-size:24px;font-weight:800;margin-bottom:6px}
.done-screen p{color:var(--muted-fg);margin-bottom:24px}

/* ── Footer ────────────────────────────────────────────── */
.site-footer{
  border-top:1px solid var(--border);background:var(--card);
  padding:22px 28px;display:flex;justify-content:space-between;
  align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--muted-fg);
}
.site-footer a{color:var(--muted-fg);transition:color var(--transition)}
.site-footer a:hover{color:var(--accent)}
.site-footer .footer-brand{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--fg)}
.site-footer .footer-links{display:flex;gap:20px;flex-wrap:wrap}

/* ── Animations ────────────────────────────────────────── */
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes spin{to{transform:rotate(360deg)}}
.animate-fade-in{animation:fadeIn 0.35s ease}
.animate-slide-up{animation:slideUp 0.45s ease}

/* ── Markdown in bubbles ───────────────────────────────── */
.bubble h1,.bubble h2,.bubble h3,.bubble h4,.bubble h5,.bubble h6{font-weight:700;margin:8px 0 4px}
.bubble h1{font-size:1.2em}.bubble h2{font-size:1.1em}.bubble h3{font-size:1.05em}.bubble h4{font-size:1em}
.bubble p{margin:3px 0}
.bubble ul,.bubble ol{padding-left:16px;margin:3px 0}
.bubble code{background:rgba(0,0,0,0.06);padding:1px 5px;border-radius:4px;font-size:0.9em;font-family:monospace}
.bubble pre{background:rgba(0,0,0,0.04);padding:10px;border-radius:8px;overflow-x:auto;margin:6px 0;font-size:0.85em}
.bubble blockquote{border-left:3px solid var(--blue-500);padding-left:10px;margin:6px 0;color:var(--muted-fg)}
.bubble table{width:100%;border-collapse:collapse;margin:8px 0;font-size:0.92em;overflow:hidden;border-radius:8px}
.bubble th,.bubble td{border:1px solid var(--border);padding:6px 8px;vertical-align:top}
.bubble th{background:rgba(0,0,0,0.05);font-weight:700}
.bubble hr{border:0;border-top:1px solid var(--border);margin:12px 0}
.dark .bubble code{background:rgba(255,255,255,0.06)}
.dark .bubble pre{background:rgba(255,255,255,0.03)}
.dark .bubble th{background:rgba(255,255,255,0.06)}
.user .bubble code{background:rgba(255,255,255,0.15);color:#fff}
.user .bubble pre{background:rgba(255,255,255,0.08);color:#fff}
.user .bubble blockquote{border-color:rgba(255,255,255,0.4);color:rgba(255,255,255,0.8)}
.thinking-dots{display:inline-flex;gap:4px;align-items:center;margin-right:8px;vertical-align:middle}
.thinking-dots i{width:6px;height:6px;border-radius:50%;background:var(--blue-500);display:block;animation:thinkingPulse 1s infinite ease-in-out}
.thinking-dots i:nth-child(2){animation-delay:.16s}
.thinking-dots i:nth-child(3){animation-delay:.32s}
@keyframes thinkingPulse{0%,80%,100%{opacity:.35;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}

/* ── Utilities ─────────────────────────────────────────── */
.text-center{text-align:center}
.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mt-8{margin-top:32px}
.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mb-8{margin-bottom:32px}
.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}
.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.flex-wrap{flex-wrap:wrap}
.hidden{display:none}
.nav-sep{flex:1}

/* ── Auth Pages ─────────────────────────────────────────── */
.auth-container{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 180px);padding:40px 20px}
.auth-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:40px 32px}
.auth-header{text-align:center;margin-bottom:32px}
.auth-header .logo-icon{font-size:48px;margin-bottom:8px}
.auth-header h1{font-size:22px;font-weight:800;margin-bottom:4px}
.auth-header p{font-size:14px;color:var(--muted-fg)}

.auth-form{display:flex;flex-direction:column;gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:13px;font-weight:600;color:var(--fg)}
.form-group .optional{font-weight:400;color:var(--muted-fg);font-size:12px}
.form-group input,.form-group select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--fg);font-size:14px;transition:border-color .2s;box-sizing:border-box}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--gold-500);box-shadow:0 0 0 3px rgba(183,121,31,0.1)}
.form-group input::placeholder{color:var(--muted-fg)}

.auth-error{background:rgba(220,38,38,0.08);border:1px solid rgba(220,38,38,0.2);color:#dc2626;padding:10px 14px;border-radius:8px;font-size:13px}
.auth-btn{width:100%;padding:12px;font-size:15px;border-radius:10px;margin-top:4px}
.auth-switch{text-align:center;margin-top:24px;font-size:13px;color:var(--muted-fg)}
.auth-switch a{color:var(--gold-600);font-weight:600;margin-left:4px}
.auth-switch a:hover{color:var(--gold-500)}

/* ── Auth button group in navbar ────────────────────────── */
.auth-btn-group{display:flex;align-items:center;gap:4px;margin-left:8px}

/* ── Admin console ─────────────────────────────────────── */
.admin-page{display:grid;gap:20px}
.admin-toolbar{display:flex;align-items:center;gap:12px;margin:18px 0;flex-wrap:wrap}
.admin-users-table{width:100%;overflow:auto}
.admin-table{min-width:980px;border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--card)}
.admin-row{display:grid;grid-template-columns:1.3fr 1.4fr .7fr 1.1fr 1fr .8fr .7fr .7fr;gap:12px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--border);font-size:13px}
.admin-row:last-child{border-bottom:none}
.admin-row.admin-head{font-weight:800;color:var(--muted-fg);background:rgba(183,121,31,.08)}
.admin-row.is-disabled{opacity:.62;background:rgba(220,38,38,.05)}
.admin-row small{display:block;color:var(--muted-fg);font-size:11px;margin-top:4px;word-break:break-all}
.admin-row span{display:inline-block;margin-right:8px}
.status-pill{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700}
.status-pill.ok{background:rgba(22,163,74,.12);color:#16a34a}
.status-pill.danger{background:rgba(220,38,38,.12);color:#dc2626}