/* KDP Unlimited Studio — full-stack edition */
:root{
  --bg:#0b1120; --bg2:#111a2e; --card:#151f36; --line:#243450;
  --txt:#e8eefc; --muted:#93a4c4; --gold:#e8b64c; --gold2:#c9922a;
  --ok:#39c07a; --warn:#e8b64c; --bad:#ef5f6b; --cnv:#2fb3e8;
  --r:14px; --sh:0 10px 30px rgba(0,0,0,.35);
  --sidebar:264px; --bottom:64px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 700px at 85% -10%,#1c2a4a 0%,var(--bg) 55%) fixed;
  color:var(--txt); font:15px/1.55 "Segoe UI",Inter,system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  -webkit-text-size-adjust:100%;
}
a{color:var(--gold);text-decoration:none}
h1,h2,h3{margin:0 0 .5rem;line-height:1.2}
h1{font-size:1.6rem}h2{font-size:1.35rem}h3{font-size:1.05rem}
p{margin:.35rem 0}
.hidden{display:none!important}
.muted{color:var(--muted)}
.tiny{font-size:12.5px}
.mt{margin-top:.9rem}.mt0{margin-top:0}
.grow{flex:1;min-width:120px}
.row{display:flex;align-items:center}
.row.gap{gap:.6rem}.row.wrap{flex-wrap:wrap}.row.end{justify-content:flex-end}
.row.between{justify-content:space-between}.row.center{align-items:center}
hr{border:0;border-top:1px solid var(--line);margin:1rem 0}

/* ── form controls ── */
input,select,textarea,button{font:inherit;color:var(--txt)}
input,select,textarea{
  width:100%;background:#0e1729;border:1px solid var(--line);border-radius:10px;
  padding:.62rem .7rem;outline:none;transition:border-color .15s,box-shadow .15s
}
input:focus,select:focus,textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(232,182,76,.15)}
textarea{resize:vertical;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:.6rem}
label input,label select,label textarea{margin-top:.25rem;color:var(--txt)}
label.check{display:flex;align-items:center;gap:.5rem;font-size:13.5px;color:var(--txt)}
label.check input{width:auto;margin:0}
input[type=range]{padding:0;background:transparent;border:0}
input[type=file]{padding:.4rem}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:.5rem 1rem}
.btn{
  background:#1b2740;border:1px solid var(--line);border-radius:10px;padding:.62rem 1rem;
  cursor:pointer;transition:.15s;white-space:nowrap;text-align:center;display:inline-block
}
.btn:hover{background:#22304d;border-color:#31456b;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.primary{background:linear-gradient(180deg,var(--gold),var(--gold2));color:#1a1405;border-color:var(--gold2);font-weight:700}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent}
.btn.block{display:block;width:100%}
.btn.tiny-btn{padding:.45rem .6rem;font-size:12.5px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.pill{background:#182743;border:1px solid var(--line);border-radius:999px;padding:.2rem .6rem;font-size:11.5px;color:var(--muted)}
.pill.free{background:#122a1f;border-color:#1f5c3e;color:#7ee2ae;font-weight:600}
.pill.tiny{font-size:11px;padding:.15rem .5rem}

/* ── layout ── */
#app{display:flex;min-height:100vh}
.sidebar{
  width:var(--sidebar);flex:0 0 var(--sidebar);background:#0d1524;border-right:1px solid var(--line);
  padding:1rem .8rem;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow:auto
}
.brand{font-size:16px;display:flex;gap:.5rem;align-items:center;padding:.3rem .5rem 1rem;border-bottom:1px solid var(--line);margin-bottom:.8rem}
.brand span{font-size:20px}
.sidebar nav{display:flex;flex-direction:column;gap:.15rem;flex:1}
.sidebar nav a{
  display:flex;gap:.6rem;align-items:center;color:var(--muted);padding:.6rem .7rem;border-radius:10px;font-size:14px
}
.sidebar nav a:hover{background:#16223a;color:var(--txt)}
.sidebar nav a.active{background:linear-gradient(90deg,rgba(232,182,76,.18),transparent);color:var(--gold);font-weight:600;border-left:3px solid var(--gold)}
.sidebar-foot{border-top:1px solid var(--line);padding-top:.8rem;display:flex;flex-direction:column;gap:.4rem}
main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  display:flex;align-items:center;gap:.6rem;padding:.7rem 1rem;border-bottom:1px solid var(--line);
  position:sticky;top:0;background:rgba(11,17,32,.92);backdrop-filter:blur(10px);z-index:20
}
.topbar-title{font-weight:600;flex:1}
.topbar-actions{display:flex;gap:.45rem;align-items:center}
.hamburger{display:none;background:none;border:0;font-size:22px;cursor:pointer;padding:.2rem .4rem}
#views{padding:1rem;max-width:1400px;width:100%;margin:0 auto}
.view{display:none}
.view.active{display:block;animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.footer{padding:1.4rem 1rem 2rem;text-align:center;color:var(--muted);font-size:12px}

/* ── cards ── */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1rem;box-shadow:var(--sh);margin-bottom:1rem}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:1rem;align-items:start}
.grid2>.card{margin-bottom:0}
.hero{display:flex;gap:1rem;align-items:center;background:linear-gradient(120deg,#16233d,#101a2d 60%);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem;margin-bottom:1rem;box-shadow:var(--sh)}
.hero h2{font-size:1.5rem}
.hero-art{font-size:56px;filter:drop-shadow(0 8px 18px rgba(0,0,0,.5))}
.list{display:flex;flex-direction:column;gap:.5rem}
.list .item{background:#0f1930;border:1px solid var(--line);border-radius:10px;padding:.6rem .7rem;display:flex;gap:.6rem;justify-content:space-between;align-items:center}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:.8rem;margin-top:.6rem}
.feature-grid>div{background:#0f1930;border:1px solid var(--line);border-radius:10px;padding:.7rem;display:flex;flex-direction:column;gap:.15rem}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.7rem;margin-bottom:1rem}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:.8rem}
.stat b{display:block;font-size:1.45rem;color:var(--gold)}
.kv{display:grid;grid-template-columns:1fr auto;gap:.3rem .8rem;font-size:13.5px}
.kv span:nth-child(even){color:var(--gold);font-variant-numeric:tabular-nums;text-align:right}
.rules{margin:.3rem 0;padding-left:1.2rem;color:var(--muted);font-size:13.5px}
.rules li{margin:.3rem 0}
.rules b{color:var(--txt)}
code{background:#0e1729;border:1px solid var(--line);border-radius:6px;padding:.05rem .35rem;font-size:12.5px;color:var(--gold)}
.log{
  background:#070d18;border:1px solid var(--line);border-radius:10px;padding:.75rem;white-space:pre-wrap;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.5;max-height:280px;overflow:auto;margin:.6rem 0;color:#bcd0f0
}
.log.tall{max-height:420px}
.progress{height:10px;background:#0e1729;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.progress>div{height:100%;width:0;background:linear-gradient(90deg,var(--gold),#7ee2ae);transition:width .3s}

/* ── login ── */
.overlay{position:fixed;inset:0;background:radial-gradient(800px 500px at 50% 0%,#1b2b4d,#070c16);display:flex;align-items:center;justify-content:center;padding:1rem;z-index:100}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:1.5rem;width:100%;max-width:380px;box-shadow:var(--sh);text-align:center}
.login-card .logo{font-size:44px}
.login-card h1{font-size:1.25rem;margin-top:.3rem}
.login-card form, .login-card label{text-align:left}
.busy-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.2rem 1.6rem;display:flex;gap:.8rem;align-items:center;box-shadow:var(--sh)}
.spinner{width:20px;height:20px;border:3px solid #2a3a5c;border-top-color:var(--gold);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── wizard ── */
.steps{display:flex;gap:.4rem;margin-bottom:1rem;overflow-x:auto;padding-bottom:.2rem}
.step{display:flex;gap:.4rem;align-items:center;font-size:13px;color:var(--muted);background:#0f1930;border:1px solid var(--line);border-radius:999px;padding:.4rem .8rem;white-space:nowrap}
.step i{font-style:normal;background:#1d2a46;border-radius:50%;width:20px;height:20px;display:grid;place-items:center;font-size:11.5px}
.step.active{color:var(--gold);border-color:var(--gold);background:rgba(232,182,76,.1)}
.step.done{color:var(--ok);border-color:#1f5c3e}
.dropzone{display:block;border:2px dashed var(--line);border-radius:12px;padding:1.1rem;text-align:center;cursor:pointer;transition:.15s;background:#0e1729}
.dropzone:hover,.dropzone.over{border-color:var(--gold);background:rgba(232,182,76,.06)}

/* ── editor ── */
.editor-layout{display:grid;grid-template-columns:320px 1fr;gap:1rem;align-items:start}
.page-list{display:flex;flex-direction:column;gap:.3rem;max-height:340px;overflow:auto;margin-top:.5rem}
.page-list button{
  text-align:left;background:#0f1930;border:1px solid var(--line);border-radius:8px;padding:.45rem .6rem;
  cursor:pointer;font-size:12.5px;color:var(--muted)
}
.page-list button.active{border-color:var(--gold);color:var(--txt);background:rgba(232,182,76,.08)}
.export-grid{display:grid;grid-template-columns:1fr 1fr;gap:.45rem;margin-top:.5rem}
.canvas-wrap{display:grid;place-items:center;background:#080e1a;border:1px solid var(--line);border-radius:12px;padding:1rem;margin-top:.7rem;overflow:auto}
.page-canvas{position:relative;background:#fff;color:#111;box-shadow:0 12px 30px rgba(0,0,0,.5);width:min(100%,430px);aspect-ratio:var(--pr,6/9);padding:0}
.page-text{padding:9% 8%;font:11px/1.5 Georgia,serif;height:100%;overflow:hidden;white-space:pre-wrap;word-break:break-word;position:relative;z-index:3}
.page-text h4{margin:.6em 0 .3em;font-size:1.25em;color:#111}
.guide{position:absolute;pointer-events:none;z-index:4;display:none}
.editor-main.guides-on .guide{display:block}
.editor-main:not(.guides-on) .guide{display:none}
.guide.bleed{inset:0;border:2px dashed #e0453f}
.guide.trim{border:2px solid #111}
.guide.safe{border:2px dashed #1f9d55}
.canvas-hide-guides .guide{display:none!important}

/* ── cover ── */
.cover-preview{background:#0a1120;border:1px solid var(--line);border-radius:12px;min-height:320px;display:grid;place-items:center;overflow:hidden;position:relative}
.cv-stub{color:var(--muted);font-size:13px}
.cover-preview img{max-width:100%;max-height:520px;display:block}
.cover-preview.cv-has-art{background:#000}
.cv-art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cv-live{width:100%;aspect-ratio:1/1.5;position:relative;z-index:2;display:flex;flex-direction:column;justify-content:space-between;padding:8% 7%;color:#fff;text-align:center;overflow:hidden}
.cv-live .cv-t{font:700 1.5rem/1.15 Georgia,serif;text-shadow:0 2px 8px rgba(0,0,0,.6)}
.cv-live .cv-s{font:italic 400 .85rem/1.3 Georgia,serif;opacity:.92}
.cv-live .cv-a{font:600 .8rem/1.2 Inter,sans-serif;letter-spacing:.14em;text-transform:uppercase}

/* ── library ── */
.lib-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.8rem;margin-top:.7rem}
.lib-card{background:#0f1930;border:1px solid var(--line);border-radius:12px;padding:.75rem;display:flex;flex-direction:column;gap:.35rem}
.lib-card b{font-size:14px}
.lib-card .thumb{height:96px;border-radius:8px;background:linear-gradient(135deg,#1d2b48,#2a3d63);display:grid;place-items:center;font-size:32px}

/* ── toasts ── */
#toasts{position:fixed;right:1rem;bottom:calc(var(--bottom) + 1rem);display:flex;flex-direction:column;gap:.5rem;z-index:200;pointer-events:none}
.toast{background:#16233d;border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:10px;padding:.6rem .85rem;font-size:13.5px;box-shadow:var(--sh);animation:slide .25s ease;max-width:340px}
.toast.ok{border-left-color:var(--ok)}
.toast.bad{border-left-color:var(--bad)}
@keyframes slide{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}

.bottomnav{display:none}

/* ── mobile ── */
@media (max-width:900px){
  :root{--sidebar:0px}
  .sidebar{
    position:fixed;inset:0 auto 0 0;width:250px;z-index:60;transform:translateX(-102%);transition:transform .22s ease
  }
  body.nav-open .sidebar{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.55)}
  .hamburger{display:block}
  .grid2{grid-template-columns:1fr}
  .editor-layout{grid-template-columns:1fr}
  #views{padding:.8rem .7rem calc(var(--bottom) + 1.4rem)}
  main{padding-bottom:var(--bottom)}
  .bottomnav{
    display:flex;position:fixed;left:0;right:0;bottom:0;height:var(--bottom);background:rgba(13,21,36,.97);
    backdrop-filter:blur(12px);border-top:1px solid var(--line);z-index:70;
    padding-bottom:env(safe-area-inset-bottom,0)
  }
  .bottomnav a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    font-size:9.5px;color:var(--muted);letter-spacing:.02em
  }
  .bottomnav a span{font-size:9.5px}
  .bottomnav a.active{color:var(--gold)}
  .hero{flex-direction:column;text-align:center}
  .hero-art{font-size:42px}
  .export-grid{grid-template-columns:1fr}
  #toasts{bottom:calc(var(--bottom) + .8rem);right:.7rem;left:.7rem}
  .topbar-actions .pill:first-child{display:none}
}
@media (max-width:420px){ .stat b{font-size:1.2rem} }
@media print{ .sidebar,.topbar,.bottomnav,#toasts{display:none} }