/* Billoff Design System — Light Theme + Interactive Lab */
:root {
  --red:        #E04B4B;
  --red-dark:   #C63B3B;
  --red-light:  #FEF2F2;
  --red-mid:    #FECACA;
  --navy:       #1A1A2E;
  --navy-mid:   #2D2D4A;
  --text:       #111827;
  --text-mid:   #374151;
  --text-muted: #6B7280;
  --border:     #E5E7EB;
  --bg:         #F9FAFB;
  --white:      #FFFFFF;
  --v1:         #2563EB;
  --v1-bg:      #EFF6FF;
  --v1-border:  #BFDBFE;
  --v2:         #16A34A;
  --v2-bg:      #F0FDF4;
  --v2-border:  #BBF7D0;
  --v3:         #9333EA;
  --v3-bg:      #FDF4FF;
  --v3-border:  #E9D5FF;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.07);
  --shadow:     0 4px 16px rgba(0,0,0,.09);
  --shadow-lg:  0 12px 40px rgba(0,0,0,.12);
  --radius:     12px;
  --r-sm:       8px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--red);text-decoration:none}
a:hover{text-decoration:underline}

/* ── Views ─────────────────────────────────────────────────────── */
.view{display:none;min-height:calc(100vh - 60px)}
.view.active{display:block}

/* ── Navbar ─────────────────────────────────────────────────────── */
.navbar{background:var(--navy);position:sticky;top:0;z-index:200;box-shadow:0 2px 16px rgba(0,0,0,.25)}
.navbar-inner{max-width:1400px;margin:0 auto;padding:0 24px;height:58px;display:flex;align-items:center;justify-content:space-between}
.navbar-brand{display:flex;align-items:center;gap:10px}
.navbar-badge{background:var(--red);color:white;font-size:.68rem;font-weight:700;padding:2px 9px;border-radius:20px;letter-spacing:.5px}
.navbar-links{display:flex;gap:4px}
.navbar-links a{color:rgba(255,255,255,.6);font-size:.83rem;padding:6px 12px;border-radius:6px;transition:all .2s}
.navbar-links a:hover{color:white;background:rgba(255,255,255,.1);text-decoration:none}

/* ── Container ──────────────────────────────────────────────────── */
.container{max-width:1400px;margin:0 auto;padding:0 24px}

/* ── Section titles ─────────────────────────────────────────────── */
.section-title{font-size:1.3rem;font-weight:700;margin:0 0 4px;color:var(--text)}
.section-title-bar{width:36px;height:3px;background:var(--red);border-radius:2px;margin-bottom:22px}

/* ── Buttons ────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 18px;border-radius:8px;
  font-family:inherit;font-size:.88rem;font-weight:600;cursor:pointer;transition:all .2s;
  border:1.5px solid transparent;text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--red);color:white;border-color:var(--red)}
.btn-primary:hover{background:var(--red-dark);border-color:var(--red-dark)}
.btn-outline{background:white;color:var(--text);border-color:var(--border)}
.btn-outline:hover{border-color:var(--red);color:var(--red)}
.btn-small{padding:5px 11px;font-size:.78rem}
.btn-link{background:none;border:none;color:var(--text-muted);font-size:.8rem;cursor:pointer;text-decoration:underline;padding:0}

/* ── Landing Hero ───────────────────────────────────────────────── */
.landing-hero{background:var(--navy);padding:64px 24px 56px;text-align:center}
.landing-hero-inner{max-width:720px;margin:0 auto}
.landing-tag{display:inline-block;background:rgba(224,75,75,.25);color:#FCA5A5;
  border:1px solid rgba(224,75,75,.35);border-radius:20px;padding:4px 14px;
  font-size:.78rem;font-weight:700;letter-spacing:.7px;text-transform:uppercase;margin-bottom:20px}
.landing-hero h1{font-size:3rem;font-weight:900;color:white;margin:0 0 16px;line-height:1.15;letter-spacing:-1px}
.landing-hero h1 span{color:var(--red)}
.landing-hero p{font-size:1.05rem;color:rgba(255,255,255,.65);margin:0;line-height:1.7}
@media(max-width:640px){.landing-hero h1{font-size:2.1rem}}

/* ── API Key banner ─────────────────────────────────────────────── */
.apikey-banner{background:var(--navy-mid);border-bottom:1px solid rgba(255,255,255,.1);padding:14px 0}
.apikey-inner{display:flex;flex-direction:column;gap:10px}
.apikey-inner>span{color:rgba(255,255,255,.8);font-size:.88rem}
.apikey-row{display:flex;gap:8px}
.apikey-field{flex:1;max-width:380px;padding:8px 12px;border-radius:8px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.1);color:white;font-size:.85rem;font-family:inherit;outline:none}
.apikey-field::placeholder{color:rgba(255,255,255,.4)}
.apikey-field:focus{border-color:var(--red)}
.apikey-note{color:rgba(255,255,255,.4);font-size:.75rem}
.apikey-set-bar{background:rgba(22,163,74,.15);border-bottom:1px solid rgba(22,163,74,.2);padding:8px 0}
.apikey-set-bar .container{display:flex;align-items:center;gap:12px;font-size:.83rem;color:#86EFAC}

/* ── Methods grid ───────────────────────────────────────────────── */
.methods-section{padding:40px 0 32px}
.methods-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.methods-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.methods-grid{grid-template-columns:1fr}}
.method-card{background:var(--white);border:1.5px solid var(--border);border-radius:var(--radius);
  padding:22px 20px;transition:all .25s;position:relative;overflow:hidden}
.method-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.method-v1::before{background:var(--v1)}
.method-v2::before{background:var(--v2)}
.method-v3::before{background:var(--v3)}
.method-icon{font-size:1.8rem;margin-bottom:10px}
.method-label{font-size:1rem;font-weight:700;margin-bottom:3px}
.method-model{font-size:.75rem;color:var(--text-muted);font-family:monospace;margin-bottom:10px}
.method-desc{font-size:.85rem;color:var(--text-mid);line-height:1.6;margin-bottom:14px}
.method-stats{display:flex;gap:8px;flex-wrap:wrap}
.method-stats span{background:var(--bg);border:1px solid var(--border);border-radius:6px;
  padding:3px 9px;font-size:.73rem;font-weight:600;color:var(--text-muted)}

/* ── Service picker ─────────────────────────────────────────────── */
.picker-section{padding:0 0 40px}
.picker-controls{display:flex;gap:10px;align-items:center;margin-bottom:20px}
.search-input{flex:1;max-width:360px;border:1.5px solid var(--border);border-radius:8px;
  padding:9px 14px;font-size:.9rem;font-family:inherit;outline:none;transition:border-color .2s}
.search-input:focus{border-color:var(--red)}
.btn-random{background:var(--navy);color:white;border-color:var(--navy);padding:9px 18px;
  border-radius:8px;font-weight:700;font-size:.88rem;cursor:pointer;transition:all .2s;
  display:flex;align-items:center;gap:6px;border:1.5px solid transparent}
.btn-random:hover{background:var(--red);border-color:var(--red)}
.btn-random.spinning .random-icon{animation:spin .5s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
.services-picker-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;margin-bottom:24px}
.picker-card{background:var(--white);border:2px solid var(--border);border-radius:var(--radius);
  padding:14px 16px;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:12px}
.picker-card:hover{border-color:var(--red-mid);box-shadow:var(--shadow-sm)}
.picker-card.selected{border-color:var(--red);background:var(--red-light);box-shadow:0 0 0 3px rgba(224,75,75,.15)}
.picker-logo{width:38px;height:38px;border-radius:8px;object-fit:contain;border:1px solid var(--border);background:var(--bg);flex-shrink:0}
.picker-logo-fallback{width:38px;height:38px;border-radius:8px;background:var(--red-light);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1rem;color:var(--red);flex-shrink:0}
.picker-meta{flex:1;min-width:0}
.picker-name{font-size:.9rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.picker-cat{font-size:.7rem;color:var(--text-muted);margin-top:1px}
.picker-check{color:var(--red);font-size:1.1rem;font-weight:900;opacity:0;transition:opacity .2s}
.picker-card.selected .picker-check{opacity:1}

/* ── Launch bar ─────────────────────────────────────────────────── */
.launch-bar{background:var(--white);border:1.5px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow-sm)}
.selected-service-badge{flex:1;font-size:.9rem;color:var(--text-muted)}
.selected-service-badge strong{color:var(--text);font-size:1rem}
.btn-launch{background:var(--red);color:white;border:2px solid var(--red);border-radius:10px;
  padding:12px 28px;font-size:1rem;font-weight:800;cursor:pointer;transition:all .25s;
  display:flex;align-items:center;gap:8px;letter-spacing:.3px}
.btn-launch:hover:not(:disabled){background:var(--red-dark);transform:translateY(-1px);box-shadow:0 4px 16px rgba(224,75,75,.35)}
.btn-launch:disabled{opacity:.4;cursor:not-allowed}

/* ── Generation header ──────────────────────────────────────────── */
.gen-header{background:var(--navy);padding:20px 0;position:sticky;top:58px;z-index:100}
.gen-service-info{font-size:1rem;font-weight:700;color:white;margin-bottom:10px}
.gen-service-info span{color:var(--red)}
.gen-overall{display:flex;align-items:center;gap:14px}
.gen-progress-track{flex:1;height:6px;background:rgba(255,255,255,.15);border-radius:3px;overflow:hidden}
.gen-progress-fill{height:100%;background:var(--red);border-radius:3px;transition:width .4s ease;width:0}
.gen-status{font-size:.82rem;color:rgba(255,255,255,.6);white-space:nowrap}

/* ── Gen columns ────────────────────────────────────────────────── */
.gen-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:20px 0 40px;align-items:start}
@media(max-width:1000px){.gen-columns{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.gen-columns{grid-template-columns:1fr}}
.gen-col{background:var(--white);border-radius:var(--radius);border:1.5px solid var(--border);
  overflow:hidden;display:flex;flex-direction:column;transition:border-color .3s}
.gen-col.active{border-color:var(--red)}
.gen-col.done{border-color:#22C55E}
.gen-col-header{padding:14px 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}
.v1-header{background:var(--v1-bg)}
.v2-header{background:var(--v2-bg)}
.v3-header{background:var(--v3-bg)}
.gen-col-icon{font-size:1.3rem;flex-shrink:0}
.gen-col-label{font-size:.9rem;font-weight:700}
.gen-col-model{font-size:.7rem;color:var(--text-muted);font-family:monospace;margin-top:1px}
.gen-col-status{margin-left:auto;font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:12px;text-transform:uppercase}
.gen-col-status.waiting{background:rgba(107,114,128,.1);color:var(--text-muted)}
.gen-col-status.searching{background:rgba(37,99,235,.12);color:var(--v1);animation:pulse-badge 1s ease-in-out infinite}
.gen-col-status.generating{background:rgba(234,88,12,.12);color:#EA580C;animation:pulse-badge 1s ease-in-out infinite}
.gen-col-status.done{background:rgba(22,163,74,.12);color:var(--v2)}
.gen-col-status.error{background:rgba(224,75,75,.12);color:var(--red)}
@keyframes pulse-badge{0%,100%{opacity:1}50%{opacity:.5}}
.gen-col-log{padding:10px 14px;max-height:140px;overflow-y:auto;background:var(--bg);border-bottom:1px solid var(--border);
  font-size:.73rem;font-family:monospace;color:var(--text-muted);line-height:1.5}
.log-line{padding:1px 0}
.log-line.ok{color:#16A34A}
.log-line.err{color:var(--red)}
.log-line.info{color:#2563EB}
.gen-col-preview{padding:14px;min-height:180px;max-height:320px;overflow-y:auto;font-size:.8rem;
  line-height:1.6;color:var(--text-mid);border-bottom:1px solid var(--border);position:relative}
.preview-placeholder{color:var(--text-muted);font-style:italic;font-size:.82rem}
.gen-col-preview h2{font-size:.85rem;font-weight:700;color:var(--red);margin:8px 0 5px;border-bottom:1px solid var(--red-light)}
.gen-col-preview h3{font-size:.78rem;font-weight:600;margin:6px 0 4px}
.gen-col-preview p{margin:0 0 6px}
.gen-col-preview table{font-size:.68rem;border-collapse:collapse;width:100%}
.gen-col-preview th,.gen-col-preview td{padding:3px 6px;border:1px solid var(--border)}
.gen-col-preview th{background:var(--bg)}
.gen-col-metrics{padding:12px 14px;display:flex;gap:8px;flex-wrap:wrap;background:white}
.gen-metric{background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:5px 10px;font-size:.72rem}
.gen-metric strong{display:block;font-size:.9rem;font-weight:700;color:var(--text)}
.gen-metric span{color:var(--text-muted)}
.gen-metric.cost strong{color:var(--red)}

/* ── Results hero ───────────────────────────────────────────────── */
.results-hero{background:var(--navy);padding:40px 24px;color:white;text-align:center}
.results-hero h2{margin:8px 0 6px;font-size:2rem;font-weight:800}
.results-hero p{color:rgba(255,255,255,.65);font-size:.95rem;margin:0}
.results-service-name{display:inline-block;background:rgba(224,75,75,.25);color:#FCA5A5;
  border:1px solid rgba(224,75,75,.3);border-radius:20px;padding:3px 14px;font-size:.78rem;font-weight:700;margin-bottom:8px}

/* ── Result cards ───────────────────────────────────────────────── */
.result-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:36px 0 32px}
@media(max-width:900px){.result-cards{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.result-cards{grid-template-columns:1fr}}
.result-card{background:var(--white);border:1.5px solid var(--border);border-radius:var(--radius);
  overflow:hidden;cursor:pointer;transition:all .25s;box-shadow:var(--shadow-sm)}
.result-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.result-card-header{padding:18px 20px 14px;border-bottom:1px solid var(--border)}
.result-card-header .icon{font-size:1.6rem;margin-bottom:8px}
.result-card-header .label{font-size:1rem;font-weight:700;margin-bottom:2px}
.result-card-header .model{font-size:.73rem;color:var(--text-muted);font-family:monospace}
.result-card.v1 .result-card-header{background:var(--v1-bg);border-bottom-color:var(--v1-border)}
.result-card.v2 .result-card-header{background:var(--v2-bg);border-bottom-color:var(--v2-border)}
.result-card.v3 .result-card-header{background:var(--v3-bg);border-bottom-color:var(--v3-border)}
.result-score-ring{display:flex;align-items:center;justify-content:center;margin:14px 0}
.score-big{font-size:2.8rem;font-weight:900;line-height:1}
.score-max{font-size:1rem;color:var(--text-muted);font-weight:500}
.result-metrics{padding:0 20px 16px}
.result-metric-row{display:flex;justify-content:space-between;align-items:center;
  padding:6px 0;border-bottom:1px solid var(--border);font-size:.83rem}
.result-metric-row:last-child{border-bottom:none}
.result-metric-label{color:var(--text-muted)}
.result-metric-value{font-weight:700;color:var(--text)}
.result-metric-value.red{color:var(--red)}
.result-view-btn{margin:0 20px 16px;display:block;text-align:center;padding:10px;border-radius:8px;
  font-weight:700;font-size:.88rem;transition:all .2s;border:2px solid transparent}
.result-card.v1 .result-view-btn{background:var(--v1);color:white}
.result-card.v2 .result-view-btn{background:var(--v2);color:white}
.result-card.v3 .result-view-btn{background:var(--v3);color:white}
.result-view-btn:hover{opacity:.85;transform:translateY(-1px);text-decoration:none}

/* ── Comparison columns ─────────────────────────────────────────── */
.compare-section{padding:0 0 32px}
.compare-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1.5px solid var(--border);
  border-radius:var(--radius);overflow:hidden}
@media(max-width:900px){.compare-cols{grid-template-columns:1fr}}
.compare-col{display:flex;flex-direction:column}
.compare-col-header{padding:12px 16px;font-size:.82rem;font-weight:700;color:white;text-align:center;
  border-bottom:1px solid rgba(255,255,255,.15)}
.compare-col-header.v1{background:var(--v1)}
.compare-col-header.v2{background:var(--v2)}
.compare-col-header.v3{background:var(--v3)}
.compare-col-body{flex:1;padding:16px;overflow-y:auto;max-height:500px;font-size:.78rem;line-height:1.65;background:white;border-right:1px solid var(--border)}
.compare-col:last-child .compare-col-body{border-right:none}
.compare-col-body h2{font-size:.82rem;font-weight:700;color:var(--red);border-bottom:1px solid var(--red-light);padding-bottom:4px;margin:12px 0 7px}
.compare-col-body h3{font-size:.75rem;font-weight:600;color:var(--text-mid);margin:8px 0 4px}
.compare-col-body p{margin:0 0 7px}
.compare-col-body table{font-size:.68rem;border-collapse:collapse;width:100%;margin:8px 0}
.compare-col-body th{background:var(--navy);color:white;padding:4px 7px;font-size:.67rem}
.compare-col-body td{padding:4px 7px;border-bottom:1px solid var(--border)}
.compare-col-body tr:hover td{background:var(--red-light)}

/* ── New test bar ───────────────────────────────────────────────── */
.new-test-bar{background:var(--white);border:1.5px solid var(--border);border-radius:var(--radius);
  padding:20px 24px;display:flex;align-items:center;gap:16px;margin:32px 0 40px;flex-wrap:wrap}
.new-test-text{flex:1}
.new-test-text strong{display:block;font-size:1rem;font-weight:700;margin-bottom:2px}
.new-test-text span{font-size:.85rem;color:var(--text-muted)}
.new-test-actions{display:flex;gap:8px}

/* ── Article ────────────────────────────────────────────────────── */
.article-topbar{background:var(--white);border-bottom:1.5px solid var(--border);padding:12px 0;
  position:sticky;top:58px;z-index:100}
.article-topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.article-breadcrumb{font-size:.83rem;color:var(--text-muted);display:flex;align-items:center;gap:6px}
.article-breadcrumb a{color:var(--red);cursor:pointer}
.article-breadcrumb span{opacity:.5}
.article-topbar-actions{display:flex;gap:8px}
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:28px;padding:28px 0}
@media(max-width:900px){.article-layout{grid-template-columns:1fr}}
.article-sidebar{display:flex;flex-direction:column;gap:14px}
.article-switch{padding:0 0 40px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.article-switch-label{font-size:.85rem;color:var(--text-muted);margin-right:4px}
.switch-btn{padding:7px 16px;border-radius:8px;font-size:.82rem;font-weight:600;cursor:pointer;border:2px solid var(--border);background:white;transition:all .2s;font-family:inherit}
.switch-btn:hover{border-color:var(--red);color:var(--red)}
.switch-btn.v1.active{background:var(--v1);color:white;border-color:var(--v1)}
.switch-btn.v2.active{background:var(--v2);color:white;border-color:var(--v2)}
.switch-btn.v3.active{background:var(--v3);color:white;border-color:var(--v3)}

/* ── Prose (article content) ────────────────────────────────────── */
.prose-billoff h2{font-size:1.25rem;font-weight:700;color:var(--red);border-bottom:2px solid var(--red);padding-bottom:7px;margin:30px 0 14px}
.prose-billoff h3{font-size:1rem;font-weight:600;color:var(--text);margin:18px 0 9px}
.prose-billoff p{margin:0 0 12px;font-size:.95rem;line-height:1.75}
.prose-billoff ul,.prose-billoff ol{padding-left:20px;margin:0 0 12px}
.prose-billoff li{margin-bottom:5px;font-size:.93rem}
.prose-billoff table{width:100%;border-collapse:collapse;margin:16px 0 22px;border-radius:8px;overflow:hidden;box-shadow:var(--shadow-sm)}
.prose-billoff thead th{background:var(--navy);color:white;padding:10px 14px;text-align:left;font-size:.83rem;font-weight:600}
.prose-billoff tbody td{padding:9px 14px;border-bottom:1px solid var(--border);font-size:.88rem;vertical-align:top}
.prose-billoff tbody tr:last-child td{border-bottom:none}
.prose-billoff tbody tr:nth-child(even) td{background:var(--bg)}
.prose-billoff tbody tr:hover td{background:var(--red-light)}
.prose-billoff table.company-facts th{width:40%;background:var(--bg);color:var(--text);font-size:.82rem}
.prose-billoff table.company-facts td{font-size:.85rem}
.prose-billoff blockquote{border-left:3px solid var(--red);background:var(--red-light);padding:10px 16px;margin:12px 0;border-radius:0 6px 6px 0;font-size:.9rem}
.prose-billoff strong{font-weight:700}
.prose-billoff a{color:var(--red)}

/* ── Sidebar cards ──────────────────────────────────────────────── */
.sidebar-card{background:var(--white);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow-sm)}
.sidebar-card-title{font-size:.9rem;font-weight:700;padding:12px 15px 8px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;gap:8px}
.sidebar-card-title::after{content:'';display:block;width:24px;height:2px;background:var(--red);border-radius:2px;margin-left:3px}
.sidebar-row{display:flex;justify-content:space-between;align-items:flex-start;padding:6px 15px;
  border-bottom:1px solid #F3F4F6;font-size:.79rem;gap:8px}
.sidebar-row:last-child{border-bottom:none}
.sidebar-row-label{color:var(--text-muted);flex-shrink:0}
.sidebar-row-value{font-weight:500;text-align:right;max-width:170px;word-break:break-word}
.sidebar-row-value a{color:var(--red)}
.cta-block{background:var(--red);border-radius:var(--radius);padding:18px 16px;text-align:center;margin-bottom:0}
.cta-block h4{color:white;margin:0 0 5px;font-size:.92rem;font-weight:700}
.cta-block p{color:rgba(255,255,255,.85);font-size:.78rem;margin:0 0 12px}
.cta-btn{display:block;background:white;color:var(--red);font-weight:700;font-size:.83rem;padding:9px 20px;border-radius:50px;transition:all .2s;text-decoration:none}
.cta-btn:hover{background:var(--navy);color:white;text-decoration:none}
.score-display{padding:16px;text-align:center}
.score-big-num{font-size:3rem;font-weight:900;line-height:1;color:var(--text)}
.score-big-num.perfect{color:#16A34A}
.score-detail-row{display:flex;justify-content:space-between;padding:5px 0;border-bottom:1px solid var(--border);font-size:.78rem}
.score-detail-row:last-child{border-bottom:none}

/* ── Footer ─────────────────────────────────────────────────────── */
.footer{background:var(--navy);color:rgba(255,255,255,.5);padding:28px 0;font-size:.8rem;margin-top:auto}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-links{display:flex;gap:16px}
.footer-links a{color:rgba(255,255,255,.5);font-size:.78rem;transition:color .2s}
.footer-links a:hover{color:var(--red);text-decoration:none}

/* ── Toast ──────────────────────────────────────────────────────── */
#toast-container{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast{background:var(--navy);color:white;padding:10px 16px;border-radius:8px;font-size:.84rem;
  box-shadow:var(--shadow-lg);animation:slide-in .3s ease;display:flex;align-items:center;gap:8px;max-width:320px}
.toast.success{border-left:3px solid #22C55E}
.toast.error{border-left:3px solid var(--red)}
.toast.info{border-left:3px solid var(--v1)}
@keyframes slide-in{from{transform:translateX(100%);opacity:0}to{transform:none;opacity:1}}

/* ── Misc ───────────────────────────────────────────────────────── */
.hidden{display:none!important}
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--red-mid)}

/* ── Login view ─────────────────────────────────────────────────── */
.view#view-login{min-height:100vh;background:linear-gradient(135deg,#FFF5F5 0%,#FFFFFF 60%,#F0F4FF 100%)}
.view#view-login.active{display:flex;align-items:center;justify-content:center}
.login-wrap{display:flex;flex-direction:column;align-items:center;gap:16px;padding:24px 16px}
.login-card{background:var(--white);border:1.5px solid var(--border);border-radius:20px;padding:40px 40px 36px;width:100%;max-width:400px;box-shadow:var(--shadow-lg)}
.login-logo{display:flex;align-items:center;gap:10px;margin-bottom:24px}
.login-badge{font-size:.7rem;font-weight:700;background:var(--red-light);color:var(--red);border:1px solid var(--red-mid);border-radius:20px;padding:3px 9px;letter-spacing:.04em}
.login-title{margin:0 0 6px;font-size:1.35rem;font-weight:800;color:var(--text)}
.login-sub{margin:0 0 24px;font-size:.85rem;color:var(--text-muted)}
.login-form{display:flex;flex-direction:column;gap:16px}
.login-field{display:flex;flex-direction:column;gap:6px}
.login-field label{font-size:.8rem;font-weight:600;color:var(--text-mid)}
.login-field input{padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--r-sm);font-size:.9rem;outline:none;transition:border-color .18s;font-family:inherit;color:var(--text)}
.login-field input:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(224,75,75,.1)}
.login-pass-wrap{position:relative}
.login-pass-wrap input{width:100%;box-sizing:border-box;padding-right:40px}
.login-toggle-pass{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;color:var(--text-muted);padding:4px;display:flex;align-items:center}
.login-toggle-pass:hover{color:var(--text)}
.login-error{background:#FEF2F2;border:1.5px solid #FECACA;color:#B91C1C;border-radius:var(--r-sm);padding:8px 12px;font-size:.82rem;font-weight:500}
.login-submit{width:100%;padding:12px;font-size:.95rem;font-weight:700;margin-top:4px}
.login-submit:disabled{opacity:.6;cursor:not-allowed}
.login-footer-note{font-size:.75rem;color:var(--text-muted);text-align:center}
/* Logout button in navbar */
.btn-logout{display:flex;align-items:center;gap:6px;background:none;border:1.5px solid var(--border);border-radius:var(--r-sm);color:var(--text-mid);font-size:.78rem;font-weight:600;padding:5px 12px;cursor:pointer;transition:border-color .15s,color .15s}
.btn-logout:hover{border-color:var(--red);color:var(--red)}

/* ── History section ────────────────────────────────────────────── */
.history-section{padding:40px 0 0}
.history-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}
.history-header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.history-count{font-size:.8rem;font-weight:600;color:var(--text-muted);background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:3px 10px}
.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:16px}
.history-card{background:var(--white);border:1.5px solid var(--border);border-radius:var(--radius);padding:18px;cursor:pointer;transition:border-color .18s,box-shadow .18s,transform .18s;position:relative}
.history-card:hover{border-color:var(--red);box-shadow:var(--shadow);transform:translateY(-2px)}
.history-card-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.history-logo{width:42px;height:42px;border-radius:8px;object-fit:cover;border:1px solid var(--border);flex-shrink:0}
.history-logo-fb{width:42px;height:42px;border-radius:8px;background:var(--red-light);color:var(--red);font-size:1.2rem;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;border:1px solid var(--red-mid)}
.history-card-meta{flex:1;min-width:0}
.history-service-name{font-size:.95rem;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.history-service-cat{font-size:.75rem;color:var(--text-muted);margin-top:2px;text-transform:capitalize}
.history-card-right{text-align:right;flex-shrink:0}
.history-date{font-size:.72rem;color:var(--text-muted);line-height:1.5}
.history-date span{display:block;color:var(--text-mid);font-weight:600}
.history-best-score{font-size:.78rem;font-weight:700;margin-top:4px}
.history-delete-btn{position:absolute;top:12px;right:12px;width:22px;height:22px;border-radius:50%;border:none;background:transparent;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.75rem;transition:background .15s,color .15s;line-height:1}
.history-delete-btn:hover{background:var(--red-light);color:var(--red)}
.history-mini-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.history-mini-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-sm);padding:10px 8px;text-align:center;cursor:pointer;transition:background .15s,border-color .15s}
.history-mini-card:hover{background:var(--white);border-color:var(--red)}
.hmc-label{font-size:.72rem;font-weight:700;margin-bottom:4px}
.hmc-score{font-size:1.1rem;font-weight:800;margin-bottom:2px}
.hmc-words{font-size:.7rem;color:var(--text-muted);margin-bottom:2px}
.hmc-cost{font-size:.72rem;color:var(--text-muted);font-weight:600}
.history-card-footer{margin-top:12px;padding-top:10px;border-top:1px solid var(--bg);text-align:right}
.history-tap-hint{font-size:.72rem;color:var(--text-muted);letter-spacing:.01em}
.history-card:hover .history-tap-hint{color:var(--red)}
/* From-history banner in results view */
.history-banner{background:var(--v3-bg);border:1.5px solid var(--v3-border);border-radius:var(--r-sm);padding:10px 16px;margin-bottom:16px;font-size:.82rem;color:#6B21A8;display:flex;align-items:center;gap:8px}
.history-banner svg{flex-shrink:0}

/* ── Scale cost metric ───────────────────────────────────────────── */
.gen-metric.cost50k{border-top:1.5px dashed var(--border);background:linear-gradient(135deg,#FFF5F5,#FFF)}
.gen-metric.cost50k strong{color:var(--red)}
.gen-metric.cost50k span{font-weight:600;color:var(--red)}
.gen-metric.time50k{background:linear-gradient(135deg,#F0F9FF,#FFF)}
.gen-metric.time50k strong{color:var(--v1)}
.gen-metric.time50k span{font-weight:600;color:var(--v1)}
.result-metric-scale{border-top:1.5px dashed var(--border);margin-top:4px;padding-top:6px}
.result-metric-scale .result-metric-label{font-weight:700}

/* ── Cost breakdown (result cards) ──────────────────────────────── */
.cost-breakdown{margin:12px 0 4px;font-size:.78rem;border:1.5px solid var(--border);border-radius:var(--r-sm);overflow:hidden}
.cost-breakdown summary{padding:8px 12px;cursor:pointer;font-weight:600;color:var(--text-mid);background:var(--bg);user-select:none;list-style:none;display:flex;align-items:center;gap:6px}
.cost-breakdown summary::before{content:'▶';font-size:.65rem;color:var(--text-muted);transition:transform .15s}
.cost-breakdown[open] summary::before{transform:rotate(90deg)}
.cost-breakdown summary::-webkit-details-marker{display:none}
.cost-breakdown summary strong{color:var(--red)}
.cost-breakdown[open] summary{border-bottom:1px solid var(--border)}
.cost-table{width:100%;border-collapse:collapse;font-size:.72rem}
.cost-table th{background:var(--navy);color:white;padding:5px 8px;text-align:left;font-weight:600;font-size:.68rem}
.cost-table td{padding:5px 8px;border-bottom:1px solid var(--bg);color:var(--text-mid);vertical-align:top}
.cost-table tr:last-child td{border-bottom:none}
.cost-table tfoot td{background:var(--bg);font-size:.75rem;border-top:2px solid var(--border)}
.cost-note{font-size:.68rem;color:var(--text-muted);padding:6px 10px;margin:0;background:var(--bg);border-top:1px solid var(--border);line-height:1.5}
.cost-simple{font-size:.8rem;color:var(--text-muted);margin:8px 0;text-align:center}
.reasoning-badge{font-size:.65rem;background:var(--v3-bg);color:var(--v3);border:1px solid var(--v3-border);border-radius:10px;padding:1px 5px;margin-left:4px;font-weight:600;white-space:nowrap}

/* ── Docs pages ─────────────────────────────────────────────────── */
.docs-hero{background:var(--navy);padding:48px 24px;color:white}
.docs-hero h1{margin:0 0 8px;font-size:2rem;font-weight:800}
.docs-hero p{color:rgba(255,255,255,.65);margin:0}
.docs-body{max-width:860px;margin:0 auto;padding:40px 24px}
.docs-section{margin-bottom:40px}
.docs-section h2{font-size:1.2rem;font-weight:700;color:var(--text);border-bottom:2px solid var(--red);padding-bottom:8px;margin-bottom:16px}
.docs-section h3{font-size:.95rem;font-weight:600;color:var(--text-mid);margin:18px 0 8px}
.docs-section p{font-size:.9rem;line-height:1.75;color:var(--text-mid);margin:0 0 10px}
.docs-section ul{padding-left:20px;margin:0 0 12px}
.docs-section li{font-size:.88rem;line-height:1.65;color:var(--text-mid);margin-bottom:5px}
.docs-table{width:100%;border-collapse:collapse;font-size:.85rem;margin:12px 0}
.docs-table th{background:var(--navy);color:white;padding:8px 12px;text-align:left;font-size:.8rem}
.docs-table td{padding:8px 12px;border-bottom:1px solid var(--border)}
.docs-table tr:last-child td{border-bottom:none}
.code-block{background:#0F1117;color:#E2E8F0;border-radius:8px;padding:16px 18px;overflow-x:auto;font-family:monospace;font-size:.8rem;line-height:1.7;margin:10px 0 16px;white-space:pre-wrap}
.code-block .comment{color:#64748B}
.code-block .string{color:#86EFAC}
.code-block .keyword{color:#93C5FD}
.badge-v1{background:var(--v1-bg);color:var(--v1);border:1px solid var(--v1-border);padding:2px 9px;border-radius:12px;font-size:.75rem;font-weight:600}
.badge-v2{background:var(--v2-bg);color:var(--v2);border:1px solid var(--v2-border);padding:2px 9px;border-radius:12px;font-size:.75rem;font-weight:600}
.badge-v3{background:var(--v3-bg);color:var(--v3);border:1px solid var(--v3-border);padding:2px 9px;border-radius:12px;font-size:.75rem;font-weight:600}