/* AI Content Studio — mobile-first, friendly, accessible. */
:root{
  --bg:#f5f7f6; --surface:#ffffff; --surface-2:#eef2f0; --ink:#16211d;
  --muted:#5a6b64; --faint:#87948e; --border:#e0e6e3;
  --brand:#0e7c66; --brand-strong:#0a5f4e; --brand-soft:#e2f2ec;
  --accent:#e88b2a; --danger:#c23b3b; --danger-soft:#fbeaea;
  --good:#1f9d6b; --warn:#b7791f;
  --radius:16px; --shadow:0 1px 2px rgba(16,33,29,.04),0 10px 24px -16px rgba(16,33,29,.22);
  --tap:48px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:"Plus Jakarta Sans",system-ui,-apple-system,sans-serif;
  font-size:16px; line-height:1.55; -webkit-font-smoothing:antialiased;
}
h1,h2,h3{line-height:1.15; letter-spacing:-.01em; text-wrap:balance; margin:0}
p{margin:0}
a{color:var(--brand-strong)}
.skip-link{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:10px 14px;border-radius:8px;z-index:100}
.skip-link:focus{left:8px;top:8px}

/* focus visibility */
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:8px}

.boot{display:flex;gap:10px;align-items:center;justify-content:center;min-height:60vh;color:var(--muted)}
.spinner{width:18px;height:18px;border:3px solid var(--brand-soft);border-top-color:var(--brand);border-radius:50%;display:inline-block;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spinner{animation:none}}

/* layout */
.app-header{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--border)}
.app-header .bar{max-width:820px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;padding-top:max(12px,env(safe-area-inset-top))}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--ink);text-decoration:none;font-size:17px}
.brand .logo{font-size:20px}
main{max-width:820px;margin:0 auto;padding:18px 16px calc(90px + env(safe-area-inset-bottom))}
.stack{display:flex;flex-direction:column;gap:16px}
.center-narrow{max-width:420px;margin:0 auto}

/* bottom nav (mobile-first) */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}
.tabbar ul{max-width:820px;margin:0 auto;list-style:none;display:flex;padding:0}
.tabbar a{flex:1;min-height:var(--tap);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--muted);font-size:11px;font-weight:600;padding:8px 4px}
.tabbar a[aria-current="page"]{color:var(--brand-strong)}
.tabbar .ic{font-size:19px}

/* cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.card h2{font-size:16px}
.muted{color:var(--muted)}
.faint{color:var(--faint)}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-strong)}

/* greeting + credits */
.greeting h1{font-size:24px}
.credits{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.credit{background:var(--brand-soft);border:1px solid var(--border);border-radius:14px;padding:14px 16px}
.credit .n{font-size:26px;font-weight:800;color:var(--brand-strong);font-variant-numeric:tabular-nums}
.credit .l{font-size:13px;color:var(--muted);font-weight:600}
.plan-chip{display:inline-flex;align-items:center;gap:6px;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:5px 12px;font-size:13px;font-weight:600}

/* buttons */
.btn{appearance:none;cursor:pointer;font:inherit;font-weight:700;border-radius:12px;min-height:var(--tap);padding:12px 18px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;transition:filter .15s,background .15s}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--brand-strong)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--border)}
.btn-ghost:hover:not(:disabled){background:var(--surface-2)}
.btn-danger{background:var(--danger-soft);color:var(--danger);border-color:#f0cccc}
.btn-block{width:100%}
.btn-lg{min-height:54px;font-size:17px}

/* forms */
form .field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
label{font-weight:600;font-size:14px}
.hint{font-size:12.5px;color:var(--muted)}
input,select,textarea{font:inherit;color:var(--ink);background:var(--surface);border:1.5px solid var(--border);border-radius:12px;padding:12px 14px;min-height:var(--tap);width:100%}
textarea{min-height:88px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px var(--brand-soft)}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--danger)}
.err-text{color:var(--danger);font-size:12.5px;font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip-radio{position:relative}
.chip-radio input{position:absolute;opacity:0;width:1px;height:1px}
.chip-radio span{display:inline-flex;min-height:44px;align-items:center;padding:8px 14px;border:1.5px solid var(--border);border-radius:999px;font-weight:600;font-size:14px;cursor:pointer;background:var(--surface)}
.chip-radio input:checked+span{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-strong)}
.chip-radio input:focus-visible+span{outline:3px solid var(--brand);outline-offset:2px}

/* auth */
.auth-hero{text-align:center;padding:22px 0 6px}
.auth-hero .logo{font-size:40px}
.auth-hero h1{font-size:26px;margin-top:6px}
.tabs{display:flex;background:var(--surface-2);border-radius:12px;padding:4px;margin-bottom:16px}
.tabs button{flex:1;min-height:42px;border:0;background:transparent;font:inherit;font-weight:700;border-radius:9px;cursor:pointer;color:var(--muted)}
.tabs button[aria-selected="true"]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}

/* alerts */
.alert{border-radius:12px;padding:12px 14px;font-size:14px;font-weight:600;display:flex;gap:10px;align-items:flex-start}
.alert-error{background:var(--danger-soft);color:#8f2b2b;border:1px solid #f0cccc}
.alert-info{background:var(--brand-soft);color:var(--brand-strong);border:1px solid var(--border)}

/* progress */
.progress-wrap{text-align:center;padding:26px 8px}
.progress-emoji{font-size:44px}
.progress-steps{list-style:none;padding:0;margin:18px auto 0;max-width:340px;text-align:left;display:flex;flex-direction:column;gap:10px}
.progress-steps li{display:flex;gap:10px;align-items:center;color:var(--faint);font-weight:600}
.progress-steps li.done{color:var(--ink)}
.progress-steps li.active{color:var(--brand-strong)}
.step-dot{width:20px;height:20px;border-radius:50%;border:2px solid var(--border);display:inline-grid;place-items:center;flex:0 0 auto;font-size:12px}
.progress-steps li.done .step-dot{background:var(--good);border-color:var(--good);color:#fff}
.progress-steps li.active .step-dot{border-color:var(--brand)}

/* result */
.result-block{border-top:1px solid var(--border);padding-top:14px;margin-top:14px}
.result-block:first-child{border-top:0;padding-top:0;margin-top:0}
.result-block h3{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.result-block .val{margin-top:6px;white-space:pre-wrap}
.scene{background:var(--surface-2);border-radius:12px;padding:12px;margin-top:8px}
.scene .head{font-weight:700;font-size:13px;color:var(--brand-strong)}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.tag{background:var(--brand-soft);color:var(--brand-strong);border-radius:999px;padding:4px 10px;font-size:13px;font-weight:600}
audio{width:100%;margin-top:8px}

/* history list */
.hist{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.hist a{display:flex;justify-content:space-between;gap:12px;align-items:center;text-decoration:none;color:inherit;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 16px;min-height:var(--tap)}
.hist a:hover{background:var(--surface-2)}
.hist .t{font-weight:700}
.hist .meta{font-size:12.5px;color:var(--muted)}
.badge{font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;white-space:nowrap}
.badge.QUEUED,.badge.PROCESSING,.badge.GENERATING_CONTENT,.badge.GENERATING_VOICE,.badge.QUALITY_CHECK{background:#fbf1dc;color:var(--warn)}
.badge.COMPLETED{background:#e3f5ec;color:var(--good)}
.badge.FAILED{background:var(--danger-soft);color:var(--danger)}

/* toast */
.toast{position:fixed;left:50%;bottom:calc(78px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:12px;font-weight:600;z-index:60;max-width:90vw;box-shadow:var(--shadow)}
.toast.err{background:var(--danger)}

/* modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(16,33,29,.45);display:grid;place-items:center;z-index:80;padding:20px}
.modal{background:var(--surface);border-radius:18px;padding:22px;max-width:400px;width:100%;box-shadow:var(--shadow)}
.modal h2{font-size:18px}
.modal .row{display:flex;gap:10px;margin-top:18px}
.modal .row .btn{flex:1}

.empty{text-align:center;color:var(--muted);padding:30px 10px}
.empty .em{font-size:40px}

.row-split{display:flex;gap:10px;flex-wrap:wrap}
.row-split>*{flex:1;min-width:140px}

/* tablet / desktop */
@media (min-width:720px){
  .credits{grid-template-columns:repeat(4,1fr)}
  .create-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
  .create-grid .full{grid-column:1 / -1}
}