/* ============================================================
   Presenter - application styles
   ============================================================ */

:root{
  --bg:#f4f6fb;
  --surface:#ffffff;
  --surface-2:#eef2f9;
  --text:#16203a;
  --muted:#667085;
  --border:#dde3ee;
  --brand:#2563eb;
  --brand-600:#1d4ed8;
  --danger:#dc2626;
  --ok:#15803d;
  --radius:14px;
  --shadow:0 10px 30px rgba(20,30,70,.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.55;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.25;margin:0 0 .4em}
.muted{color:var(--muted)}
.mt{margin-top:16px}
.mb{margin-bottom:16px}

/* ---------- layout ---------- */
.topbar{
  background:var(--surface);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:40;
}
.topbar .inner{
  max-width:1180px;margin:0 auto;padding:12px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.02em}
.brand span{color:var(--brand)}
.topnav{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.topnav a{font-weight:600;font-size:14px;color:#3a465f}
.topnav a:hover{color:var(--brand);text-decoration:none}
.head-actions{display:flex;gap:10px}
.user-chip{display:flex;align-items:center;gap:8px;background:var(--surface-2);padding:4px 12px 4px 4px;border-radius:999px}
.user-name{font-size:13px;font-weight:600}
.avatar{width:30px;height:30px;border-radius:50%;color:#fff;display:grid;place-items:center;font-weight:700;font-size:13px;flex:0 0 auto}

.container{max-width:1180px;margin:0 auto;padding:26px 22px 60px}
.site-footer{border-top:1px solid var(--border);background:var(--surface)}
.site-footer .inner{max-width:1180px;margin:0 auto;padding:18px 22px;display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-title{font-size:15px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:26px 0 12px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.pill{display:inline-block;background:var(--surface-2);color:#48536b;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600}
.pill-edit{background:#dcfce7;color:#166534}

/* ---------- cards & buttons ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 16px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);color:var(--text);font-size:14px;font-weight:600;
  cursor:pointer;transition:.15s;text-decoration:none;white-space:nowrap;
}
.btn:hover{border-color:#c3cde0;background:#f8fafc;text-decoration:none}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff}
.btn-danger{color:var(--danger);border-color:#f3c4c4}
.btn-danger:hover{background:#fef2f2;border-color:#f3c4c4}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:9px}
.btn-block{width:100%}

.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:14px}
.alert-success{background:#e7f6ec;color:#157347;border:1px solid #b7e4c7}
.alert-error{background:#fde8e8;color:#b42318;border:1px solid #f5c2c2}
.error-text{color:var(--danger)}
.ok-text{color:var(--ok)}

/* ---------- forms ---------- */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-weight:600;font-size:13px;margin-bottom:5px;color:#3a465f}
input[type=text],input[type=email],input[type=password],input[type=url],input[type=file],textarea,select{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;
  font-size:14px;background:#fff;color:var(--text);font-family:inherit;
}
textarea{resize:vertical}
input:focus,textarea:focus,select:focus{outline:2px solid #bfdbfe;border-color:var(--brand)}
.check{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#3a465f;margin:6px 0}
.check input{width:auto}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.span-2{grid-column:1 / -1}
.toggles{display:flex;flex-direction:column;justify-content:center}

/* ---------- auth ---------- */
.auth-wrap{display:flex;justify-content:center;padding:30px 0}
.form-card{max-width:420px;width:100%}
.form-card h1{font-size:26px}

/* ---------- hero ---------- */
.hero{padding:44px;background:linear-gradient(135deg,#0b1220,#1b2b52);color:#e6ecf7;border:0}
.hero h1{font-size:clamp(26px,3.4vw,42px);max-width:760px}
.hero .lead{color:#b7c6e6;font-size:17px;max-width:640px}
.hero-actions{display:flex;gap:12px;margin:24px 0 30px;flex-wrap:wrap}
.hero .btn{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2);color:#eaf0ff}
.hero .btn:hover{background:rgba(255,255,255,.16)}
.hero .btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);padding-top:20px}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats strong{font-size:24px}
.hero-stats span{color:#9db0d6;font-size:13px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
.feature h3{font-size:17px}
.feature p{color:var(--muted);font-size:14px;margin:0}

/* ---------- dashboard ---------- */
.deck-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.deck-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.deck-thumb{
  display:flex;flex-direction:column;justify-content:flex-end;gap:4px;
  height:130px;padding:16px;color:#fff;text-decoration:none;
  background:linear-gradient(135deg,var(--accent,#2563eb),#0b1220);
}
.deck-thumb:hover{text-decoration:none}
.deck-thumb-title{font-weight:700;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.deck-thumb-meta{font-size:12px;opacity:.85}
.deck-body{padding:16px;display:flex;flex-direction:column;gap:10px;flex:1}
.deck-title{font-size:16px;margin:0}
.deck-desc{font-size:13px;color:var(--muted);margin:0;min-height:34px}
.deck-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px}
.deck-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto}
.empty{text-align:center;padding:40px}

/* ---------- editor ---------- */
.editor{max-width:900px}
.editor-settings{margin-bottom:24px}
.editor-slides{margin-bottom:130px}
.add-buttons{display:flex;gap:8px;flex-wrap:wrap}
.slides-list{display:flex;flex-direction:column;gap:16px;margin-top:16px}
.slide-editor{padding:0;overflow:hidden;transition:.15s}
.slide-editor.dragging{opacity:.55;border-style:dashed}
.slide-editor-head{
  display:flex;align-items:center;gap:12px;padding:10px 16px;
  background:var(--surface-2);border-bottom:1px solid var(--border);
}
.drag-handle{cursor:grab;color:#98a2b3;letter-spacing:-2px;font-size:18px;user-select:none}
.slide-num{font-weight:700;font-size:13px;color:#48536b}
.f-type{width:auto;padding:5px 10px;font-size:13px}
.slide-editor-tools{margin-left:auto;display:flex;gap:6px}
.icon-btn{
  width:30px;height:30px;border-radius:8px;border:1px solid var(--border);
  background:#fff;cursor:pointer;font-size:15px;color:#48536b;
}
.icon-btn:hover{background:var(--surface-2)}
.icon-btn.danger{color:var(--danger)}
.slide-editor-body{padding:16px}
.slides-list .form-group:last-child{margin-bottom:0}
.file-current{font-size:12px;margin:6px 0 0}
.current-media{
  display:flex;align-items:center;gap:10px;margin-top:10px;padding:9px 12px;
  border:1px dashed var(--border);border-radius:10px;background:var(--surface-2);font-size:13px;
}
.current-media .media-icon{font-size:15px}
.current-media .media-name{flex:1;font-weight:600;color:#48536b;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.current-media .btn{flex:0 0 auto}

/* gallery editor */
.gallery-editor{border:1px solid var(--border);border-radius:12px;padding:12px;background:var(--surface-2)}
.gallery-items{display:flex;flex-direction:column;gap:8px;margin-bottom:8px}
.gallery-item{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--border);border-radius:10px;padding:6px 8px}
.gallery-thumb{width:46px;height:46px;object-fit:cover;border-radius:8px;background:var(--surface-2);flex:0 0 auto}
.gallery-thumb.placeholder{background:repeating-linear-gradient(45deg,#e5e9f2,#e5e9f2 6px,#eef2f9 6px,#eef2f9 12px)}
.gallery-item-name{flex:1;font-size:13px;font-weight:600;color:#48536b;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gallery-item-kind{font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);background:var(--surface-2);border-radius:999px;padding:2px 8px}
.gallery-empty{margin:2px 0 10px;font-size:13px}
.gallery-add{margin-bottom:8px}
.gallery-add-url{display:flex;gap:8px;align-items:center;margin-bottom:10px}
.gallery-add-url input{flex:1}
.gallery-options{margin-top:4px}
.gallery-options .form-group{margin-bottom:0}
.editor-savebar{
  position:sticky;bottom:0;display:flex;align-items:center;gap:16px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(6px);
  border-top:1px solid var(--border);padding:14px 0;margin-top:10px;
}

/* ---------- share ---------- */
.share-card{margin-bottom:20px}
.share-form{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.share-form input[type=email]{flex:1;min-width:220px}
.share-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.share-list li{display:flex;align-items:center;gap:12px;padding:10px;border:1px solid var(--border);border-radius:10px}
.share-who{display:flex;flex-direction:column;flex:1;font-size:14px}
.share-who .muted{font-size:12px}

/* ============================================================
   PRESENTER
   ============================================================ */
.presenter-body{overflow:hidden;background:#0b1220}

.presenter{
  --p-bg:#0b1220;--p-panel:#131c31;--p-text:#e6ecf7;--p-muted:#8fa2c4;--p-accent:#4f8cff;
  position:fixed;inset:0;display:flex;background:var(--p-bg);color:var(--p-text);
  overflow:hidden;font-family:'Segoe UI',system-ui,Arial,sans-serif;
}
.presenter.theme-paper{--p-bg:#f5f3ee;--p-panel:#ffffff;--p-text:#1f2430;--p-muted:#6b7280;--p-accent:#b45309}
.presenter.theme-solar{--p-bg:#1a1207;--p-panel:#2a1c0c;--p-text:#ffedd5;--p-muted:#d6a86a;--p-accent:#f59e0b}
.presenter.theme-forest{--p-bg:#0a1a12;--p-panel:#11291d;--p-text:#e3f6ec;--p-muted:#7fb79a;--p-accent:#34d399}
.presenter.theme-slate{--p-bg:#111418;--p-panel:#1b2027;--p-text:#e8ebf0;--p-muted:#98a2b3;--p-accent:#38bdf8}

/* sidebar */
.deck-sidebar{
  width:290px;flex:0 0 290px;background:var(--p-panel);display:flex;flex-direction:column;
  border-right:1px solid rgba(127,127,127,.18);
  transition:margin-left .35s ease;
}
.presenter.sidebar-collapsed .deck-sidebar{margin-left:-290px}
.deck-backdrop{display:none}
.sidebar-head{padding:20px 20px 14px;border-bottom:1px solid rgba(127,127,127,.18)}
.sidebar-deck-title{font-weight:800;font-size:16px;color:var(--p-text);display:block;line-height:1.3}
.sidebar-deck-title:hover{color:var(--p-accent);text-decoration:none}
.sidebar-owner{font-size:12px;color:var(--p-muted);margin-top:2px}
.sidebar-progress{height:5px;border-radius:999px;background:rgba(127,127,127,.25);margin:14px 0 8px;overflow:hidden}
.sidebar-progress .bar{display:block;height:100%;width:0;background:var(--p-accent);border-radius:999px;transition:width .4s ease}
.sidebar-counter{font-size:12px;color:var(--p-muted);font-variant-numeric:tabular-nums}
.slide-nav{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:6px}
.slide-btn{
  display:flex;align-items:center;gap:12px;width:100%;text-align:left;cursor:pointer;
  padding:10px 12px;border-radius:11px;border:1px solid transparent;background:transparent;
  color:var(--p-text);font-size:14px;font-family:inherit;transition:.15s;
}
.slide-btn:hover{background:rgba(127,127,127,.12)}
.slide-btn.active{background:color-mix(in srgb,var(--p-accent) 22%, transparent);border-color:color-mix(in srgb,var(--p-accent) 45%, transparent)}
.slide-btn-icon{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;display:grid;place-items:center;
  background:rgba(127,127,127,.18);font-weight:700;font-size:13px;color:var(--p-text);
}
.slide-btn.active .slide-btn-icon{background:var(--p-accent);color:#fff}
.icons-hidden .slide-btn-icon{display:none}
.slide-btn-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.slide-btn-type{font-size:10px;font-weight:700;letter-spacing:.06em;color:var(--p-muted);opacity:.8}
.icons-hidden .slide-btn{justify-content:flex-start}
.sidebar-foot{padding:14px 18px;border-top:1px solid rgba(127,127,127,.18);display:flex;flex-direction:column;gap:6px}
.side-link{font-size:13px;font-weight:600;color:var(--p-muted)}
.side-link:hover{color:var(--p-accent);text-decoration:none}

/* stage */
.deck-stage{flex:1;position:relative;overflow:hidden;background:var(--p-bg)}
.slides-track{position:absolute;inset:0;perspective:1600px}
.deck-slide{
  position:absolute;inset:0;opacity:0;visibility:hidden;z-index:1;
  transition:opacity .5s ease, transform .5s ease;will-change:transform,opacity;
}
.deck-slide.active{opacity:1;visibility:visible;z-index:2}
.deck-slide:not(.active){pointer-events:none}
.slide-frame{position:absolute;inset:0}
.slide-iframe{width:100%;height:100%;border:0;display:block;background:var(--p-bg)}

/* transitions */
[data-transition="slide"] .deck-slide{transform:translateX(var(--enter-x,64px))}
[data-transition="slide"] .deck-slide.active{transform:translateX(0)}
[data-transition="slide"] .deck-slide.leaving{transform:translateX(calc(-1 * var(--enter-x,64px)))}
[data-transition="fade"] .deck-slide{transform:none}
[data-transition="zoom"] .deck-slide{transform:scale(.93)}
[data-transition="zoom"] .deck-slide.active{transform:scale(1)}
[data-transition="zoom"] .deck-slide.leaving{transform:scale(1.06)}
[data-transition="flip"] .deck-slide{transform:perspective(1600px) rotateY(var(--enter-y,16deg))}
[data-transition="flip"] .deck-slide.active{transform:perspective(1600px) rotateY(0)}
[data-transition="flip"] .deck-slide.leaving{transform:perspective(1600px) rotateY(calc(-1 * var(--enter-y,16deg)))}
[data-transition="none"] .deck-slide{transition:none}

/* controls */
.glass-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 12px;border-radius:999px;
  background:rgba(20,26,40,.55);color:#fff;border:1px solid rgba(255,255,255,.18);
  font-size:17px;cursor:pointer;backdrop-filter:blur(8px);transition:.15s;text-decoration:none;
}
.glass-btn:hover{background:rgba(20,26,40,.8);text-decoration:none}
.theme-paper .glass-btn{background:rgba(255,255,255,.75);color:#1f2430;border-color:rgba(0,0,0,.12)}
.theme-paper .glass-btn:hover{background:#fff}
.deck-topcontrols{position:absolute;top:16px;right:18px;display:flex;align-items:center;gap:8px;z-index:20}
.glass-sep{width:1px;height:24px;background:rgba(127,127,127,.4)}
.deck-controls{
  position:absolute;bottom:18px;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:10px;z-index:20;
}
.deck-counter{color:#fff;font-size:13px;font-weight:600;background:rgba(20,26,40,.55);padding:8px 14px;border-radius:999px;backdrop-filter:blur(8px);font-variant-numeric:tabular-nums}
.theme-paper .deck-counter{background:rgba(255,255,255,.8);color:#1f2430}
.scroll-tip{
  position:absolute;bottom:20px;left:50%;transform:translateX(-50%) translateY(14px);
  background:rgba(20,26,40,.62);color:#fff;padding:7px 16px;border-radius:999px;font-size:12px;
  letter-spacing:.03em;opacity:0;transition:.3s;pointer-events:none;z-index:15;backdrop-filter:blur(6px);
}
.scroll-tip.show{opacity:.9;transform:translateX(-50%) translateY(0)}
.scroll-tip span{display:inline-block;animation:bob 1.4s infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(4px)}}
.deck-toast{
  position:absolute;top:64px;left:50%;transform:translateX(-50%) translateY(-8px);
  background:rgba(20,26,40,.8);color:#fff;padding:8px 16px;border-radius:999px;font-size:13px;
  opacity:0;transition:.25s;pointer-events:none;z-index:25;
}
.deck-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.deck-empty{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:#e6ecf7;background:#0b1220;text-align:center}
.deck-empty .btn{background:transparent;color:#e6ecf7;border-color:rgba(255,255,255,.3)}
.deck-empty .btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}

/* responsive */
@media (max-width:860px){
  .features{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .container{padding:18px 14px 50px}

  /* Slide menu becomes a slide-in overlay: collapsed by default, tap the
     menu button to bring it back. */
  .deck-sidebar{
    position:absolute;top:0;bottom:0;left:0;z-index:30;
    width:min(84vw,300px);flex:0 0 auto;margin-left:0;
    transform:translateX(0);transition:transform .3s ease;
    box-shadow:0 0 40px rgba(0,0,0,.45);
  }
  .presenter.sidebar-collapsed .deck-sidebar{
    margin-left:0;transform:translateX(-105%);
  }
  .deck-backdrop{
    display:block;position:absolute;inset:0;z-index:25;
    background:rgba(3,7,18,.55);
    opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
  }
  .presenter:not(.sidebar-collapsed) .deck-backdrop{opacity:1;visibility:visible}

  .glass-btn{min-width:42px;height:42px;font-size:18px}
  .sidebar-foot .side-link{padding:7px 0}
  .deck-controls{bottom:14px}
  .deck-topcontrols{top:12px;right:12px;gap:6px}
}

@media (max-width:480px){
  .slide-btn-type{display:none}
  .hero{padding:28px 22px}
}