/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0F172A;--bg2:#1E293B;--bg3:#334155;
  --surface:#1E293B;--surface2:#334155;
  --border:#475569;--border2:#64748B;
  --text:#F1F5F9;--text2:#CBD5E1;--text3:#94A3B8;
  --accent:#6366F1;--accent2:#818CF8;--accent3:#4F46E5;
  --green:#34D399;--red:#F87171;--yellow:#FBBF24;
  --radius:8px;--radius-lg:12px;
  --shadow:0 1px 3px rgba(0,0,0,.3),0 1px 2px rgba(0,0,0,.2);
  --shadow-lg:0 10px 25px rgba(0,0,0,.4);
  --font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --max-width:1200px;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto}
a{color:var(--accent2);text-decoration:none}
a:hover,a:focus{text-decoration:underline}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius);font-size:.95rem;font-weight:600;cursor:pointer;border:2px solid transparent;transition:all .2s;text-decoration:none;line-height:1.4}
.btn:hover,.btn:focus{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover,.btn-primary:focus{background:var(--accent3);border-color:var(--accent3)}
.btn-ghost{background:transparent;color:var(--text2);border-color:var(--border)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--bg3);color:var(--text);border-color:var(--border2)}
.btn-small{padding:6px 14px;font-size:.85rem}
.btn-build{padding:12px 28px;font-size:1.05rem;width:100%;justify-content:center}

/* === Header === */
.site-header{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(8px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:1.1rem}
.logo:hover,.logo:focus{text-decoration:none;color:var(--accent2)}
.main-nav{display:flex;gap:8px}
.main-nav a{padding:6px 14px;border-radius:var(--radius);color:var(--text2);font-size:.9rem;font-weight:500}
.main-nav a:hover,.main-nav a:focus{background:var(--bg3);color:var(--text);text-decoration:none}

/* === Hero === */
.hero{padding:60px 0 40px;text-align:center;background:linear-gradient(180deg,var(--bg2) 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:16px;background:linear-gradient(135deg,var(--text) 0%,var(--accent2) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:1.15rem;color:var(--text2);max-width:600px;margin:0 auto 28px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* === Workspace === */
.workspace-section{padding:40px 0}
.workspace-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
@media(max-width:860px){.workspace-grid{grid-template-columns:1fr}}

.input-panel,.preview-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}
.panel-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:12px}
.panel-header h2{font-size:1.15rem;font-weight:700}

/* Preset tabs */
.preset-tabs{display:flex;gap:4px;background:var(--bg3);border-radius:var(--radius);padding:3px}
.preset-tab{padding:6px 16px;border-radius:6px;border:none;background:transparent;color:var(--text3);font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s}
.preset-tab:hover{color:var(--text)}
.preset-tab.active{background:var(--accent);color:#fff}

/* Textarea */
.source-textarea{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:14px;color:var(--text);font-family:var(--font);font-size:.95rem;line-height:1.6;resize:vertical;transition:border-color .2s}
.source-textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(99,102,241,.2)}
.source-textarea::placeholder{color:var(--text3)}
.input-meta{display:flex;align-items:center;justify-content:space-between;margin-top:8px;font-size:.82rem;color:var(--text3)}

.build-actions{display:flex;gap:10px;margin-top:16px}

/* Options */
.options-group{margin-top:16px}
.options-fieldset{border:1px solid var(--border);border-radius:var(--radius);padding:14px}
.options-fieldset legend{font-size:.85rem;font-weight:600;color:var(--text2);padding:0 6px}
.checkbox-label{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--text2);cursor:pointer;margin-bottom:6px}
.checkbox-label:last-child{margin-bottom:0}
.checkbox-label input{accent-color:var(--accent);width:16px;height:16px}

/* Preview */
.preview-header{align-items:flex-start}
.preview-controls{display:flex;align-items:center;gap:8px}
#slide-counter{font-size:.85rem;color:var(--text3);font-weight:600}

.slide-viewer{min-height:320px;display:flex;align-items:center;justify-content:center}
.slide-empty{text-align:center;color:var(--text3);padding:40px}
.slide-empty svg{margin-bottom:12px;opacity:.5}

.slide-card{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;min-height:320px}
.slide-card-header{display:flex;align-items:flex-start;gap:10px;margin-bottom:16px}
.slide-number{background:var(--accent);color:#fff;font-size:.75rem;font-weight:700;padding:3px 8px;border-radius:4px;flex-shrink:0;margin-top:3px}
.slide-title{font-size:1.3rem;font-weight:700;line-height:1.3;flex:1;outline:none}
.slide-title:focus,.slide-body:focus,.speaker-notes:focus{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.slide-body{font-size:1rem;color:var(--text2);line-height:1.7;outline:none;min-height:120px}
.slide-body ul,.slide-body ol{padding-left:20px;margin:8px 0}
.slide-body li{margin-bottom:4px}
.slide-body strong.key-term{color:var(--accent2);font-weight:700}

.speaker-notes-details{margin-top:20px;border-top:1px solid var(--border);padding-top:12px}
.speaker-notes-details summary{font-size:.85rem;color:var(--text3);cursor:pointer;font-weight:600}
.speaker-notes{font-size:.9rem;color:var(--text3);margin-top:8px;outline:none;min-height:40px}

.deck-actions{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}

/* === Library === */
.library-section{padding:40px 0;background:var(--bg2)}
.section-sub{color:var(--text3);font-size:.95rem;margin-bottom:20px}
.library-list{display:grid;gap:12px}
.library-empty{color:var(--text3);font-style:italic}
.library-card{display:flex;align-items:center;justify-content:space-between;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;gap:12px}
.library-card-info{flex:1;min-width:0}
.library-card-title{font-weight:600;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.library-card-meta{font-size:.8rem;color:var(--text3)}
.library-card-actions{display:flex;gap:6px;flex-shrink:0}

/* === Guide === */
.guide-section{padding:50px 0}
.guide-grid{display:grid;grid-template-columns:1fr 320px;gap:32px}
@media(max-width:860px){.guide-grid{grid-template-columns:1fr}}
.guide-main h2{font-size:1.5rem;font-weight:700;margin-bottom:12px}
.guide-main h3{font-size:1.15rem;font-weight:700;margin:28px 0 10px}
.guide-main p{color:var(--text2);margin-bottom:12px}
.walkthrough{padding-left:24px;margin-bottom:20px}
.walkthrough li{color:var(--text2);margin-bottom:8px;line-height:1.6}
.mistakes-list{padding-left:20px}
.mistakes-list li{color:var(--text2);margin-bottom:8px;line-height:1.6}

.preset-comparison{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:12px}
@media(max-width:600px){.preset-comparison{grid-template-columns:1fr}}
.preset-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.preset-card h4{font-size:.95rem;font-weight:700;margin-bottom:6px;color:var(--accent2)}
.preset-card p{font-size:.88rem;color:var(--text2);line-height:1.5}

/* Sidebar */
.guide-sidebar{display:flex;flex-direction:column;gap:20px}
.sidebar-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.sidebar-card h3{font-size:1rem;font-weight:700;margin-bottom:12px}
.sidebar-card details{margin-bottom:10px}
.sidebar-card details summary{font-size:.88rem;font-weight:600;color:var(--text2);cursor:pointer}
.sidebar-card details p{font-size:.85rem;color:var(--text3);margin-top:6px;line-height:1.5}
.sidebar-card .btn{margin-top:8px}

/* === Assumptions === */
.assumptions-section{padding:40px 0;background:var(--bg2)}
.assumptions-section h2{font-size:1.3rem;font-weight:700;margin-bottom:20px;text-align:center}
.assumptions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:700px){.assumptions-grid{grid-template-columns:1fr}}
.assumption-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.assumption-card h4{font-size:.95rem;font-weight:700;margin-bottom:8px;color:var(--yellow)}
.assumption-card ul{padding-left:18px}
.assumption-card li{font-size:.88rem;color:var(--text2);margin-bottom:4px}

/* === Footer === */
.site-footer{background:var(--bg2);border-top:1px solid var(--border);padding:30px 0;margin-top:20px}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.footer-inner p{font-size:.85rem;color:var(--text3)}
.footer-nav{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.footer-nav a{font-size:.85rem;color:var(--text3)}
.footer-nav a:hover,.footer-nav a:focus{color:var(--text)}
.footer-meta{font-size:.78rem;color:var(--text3)}

/* === Toast === */
.toast{position:fixed;bottom:24px;right:24px;background:var(--surface2);border:1px solid var(--border);color:var(--text);padding:12px 20px;border-radius:var(--radius);font-size:.9rem;box-shadow:var(--shadow-lg);z-index:1000;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* === Print === */
@media print{
  .site-header,.site-footer,.hero,.workspace-section,.library-section,.guide-section,.assumptions-section,.deck-actions,.preview-controls,.btn,.preset-tabs,.input-panel,.toast{display:none!important}
  .preview-panel{border:none;padding:0}
  .slide-card{break-after:page;border:none;padding:40px 0;min-height:auto}
  .slide-card::before{content:attr(data-slide-number);font-size:.8rem;color:#666}
  .speaker-notes-details{display:block}
  .speaker-notes-details summary{font-weight:700}
  body{background:#fff;color:#000}
}

/* === Focus === */
:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}

/* === Scrollbar === */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}