/* ============================================================
   WebinarFlow — design system
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Sora:wght@600;700;800&display=swap');

:root{
  --font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-display:'Sora','Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;

  --brand:#4f46e5;
  --brand-600:#4338ca;
  --brand-50:#eef2ff;
  --accent:#f59e0b;

  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --line:#e2e8f0;
  --line-2:#f1f5f9;
  --bg:#f8fafc;
  --card:#ffffff;

  --ok:#059669; --ok-bg:#ecfdf5;
  --warn:#d97706; --warn-bg:#fffbeb;
  --danger:#dc2626; --danger-bg:#fef2f2;
  --info:#0284c7; --info-bg:#f0f9ff;

  --r-sm:8px; --r:12px; --r-lg:16px; --r-xl:22px;
  --sh-sm:0 1px 2px rgba(15,23,42,.06);
  --sh:0 1px 3px rgba(15,23,42,.08),0 8px 24px -12px rgba(15,23,42,.14);
  --sh-lg:0 12px 40px -12px rgba(15,23,42,.22);
  --t:.18s cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-sans);background:var(--bg);color:var(--ink);
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);margin:0 0 .5em;line-height:1.2;letter-spacing:-.02em}
h1{font-size:2rem}h2{font-size:1.4rem}h3{font-size:1.1rem}
p{margin:0 0 1em}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
hr{border:0;border-top:1px solid var(--line);margin:24px 0}
code,kbd{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.875em;background:var(--line-2);padding:2px 6px;border-radius:6px}

/* ---------- layout ---------- */
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.container-sm{max-width:760px}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}
.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.gap-24{gap:24px}
.wrap{flex-wrap:wrap}.grow{flex:1 1 auto;min-width:0}
.mt-0{margin-top:0}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}
.mb-0{margin-bottom:0}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.text-center{text-align:center}.text-right{text-align:right}
.muted{color:var(--muted)}.small{font-size:.85rem}.tiny{font-size:.78rem}
.bold{font-weight:600}.strong{font-weight:700}
.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hidden{display:none!important}

/* ---------- cards ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-sm)}
.card-pad{padding:22px}
.card-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-head h3{margin:0;font-size:1rem}
.card-body{padding:22px}
.card-foot{padding:16px 22px;border-top:1px solid var(--line);background:var(--line-2);border-radius:0 0 var(--r-lg) var(--r-lg)}

/* ---------- buttons ---------- */
.btn{
  --b:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-sans);font-size:.9rem;font-weight:600;line-height:1;
  padding:11px 18px;border-radius:var(--r-sm);border:1px solid transparent;
  background:var(--b);color:#fff;cursor:pointer;transition:var(--t);white-space:nowrap;text-decoration:none;
}
.btn:hover{filter:brightness(.94);text-decoration:none;color:#fff;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:disabled,.btn.is-loading{opacity:.6;pointer-events:none}
.btn-lg{padding:15px 28px;font-size:1rem;border-radius:var(--r)}
.btn-sm{padding:8px 13px;font-size:.82rem}
.btn-block{width:100%}
.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--line)}
.btn-ghost:hover{background:var(--line-2);color:var(--ink)}
.btn-light{background:var(--line-2);color:var(--ink-2);border-color:var(--line)}
.btn-light:hover{background:#e9eef5;color:var(--ink)}
.btn-danger{background:var(--danger)}
.btn-ok{background:var(--ok)}
.btn-accent{background:var(--accent);color:#1c1206}
.btn-accent:hover{color:#1c1206}
.btn-icon{padding:9px;width:36px;height:36px}

/* ---------- forms ---------- */
.field{margin-bottom:18px}
.field > label,.label{display:block;font-size:.83rem;font-weight:600;color:var(--ink-2);margin-bottom:7px;letter-spacing:.01em}
.input,.select,.textarea{
  width:100%;font-family:inherit;font-size:.94rem;color:var(--ink);
  padding:11px 13px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;transition:var(--t);outline:none;
}
.input:focus,.select:focus,.textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.input::placeholder,.textarea::placeholder{color:#94a3b8}
.textarea{min-height:110px;resize:vertical;line-height:1.6}
.select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center;background-size:18px;padding-right:36px}
.hint{font-size:.78rem;color:var(--muted);margin-top:6px}
.field-error .input,.field-error .select{border-color:var(--danger)}
.err-msg{font-size:.78rem;color:var(--danger);margin-top:6px}
.check{display:flex;align-items:flex-start;gap:10px;font-size:.88rem;color:var(--ink-2);cursor:pointer}
.check input{margin-top:3px;width:16px;height:16px;accent-color:var(--brand);flex-shrink:0}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* switch */
.switch{position:relative;display:inline-block;width:42px;height:24px;flex-shrink:0}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;background:#cbd5e1;border-radius:999px;transition:var(--t);cursor:pointer}
.switch span::before{content:'';position:absolute;height:18px;width:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:var(--t);box-shadow:var(--sh-sm)}
.switch input:checked + span{background:var(--brand)}
.switch input:checked + span::before{transform:translateX(18px)}
.switch-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line-2)}
.switch-row:last-child{border-bottom:0}
.switch-row .t{font-weight:600;font-size:.9rem}
.switch-row .d{font-size:.8rem;color:var(--muted)}

/* ---------- badges / pills ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:.72rem;font-weight:700;letter-spacing:.03em;
  text-transform:uppercase;padding:4px 9px;border-radius:999px;background:var(--line-2);color:var(--ink-2)}
.badge-ok{background:var(--ok-bg);color:var(--ok)}
.badge-warn{background:var(--warn-bg);color:var(--warn)}
.badge-danger{background:var(--danger-bg);color:var(--danger)}
.badge-info{background:var(--info-bg);color:var(--info)}
.badge-brand{background:var(--brand-50);color:var(--brand)}
.dot{width:7px;height:7px;border-radius:50%;background:currentColor;display:inline-block}
.live-dot{width:8px;height:8px;border-radius:50%;background:#ef4444;display:inline-block;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--r-lg)}
table.tbl{width:100%;border-collapse:collapse;font-size:.9rem;background:#fff}
table.tbl th{
  text-align:left;font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);
  font-weight:700;padding:12px 16px;background:var(--line-2);border-bottom:1px solid var(--line);white-space:nowrap}
table.tbl td{padding:14px 16px;border-bottom:1px solid var(--line-2);vertical-align:middle}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tbody tr{transition:background var(--t)}
table.tbl tbody tr:hover{background:#fafbfd}

/* ---------- alerts ---------- */
.alert{padding:13px 16px;border-radius:var(--r);font-size:.88rem;margin-bottom:18px;border:1px solid transparent;display:flex;gap:10px;align-items:flex-start}
.alert-ok{background:var(--ok-bg);color:#065f46;border-color:#a7f3d0}
.alert-err{background:var(--danger-bg);color:#991b1b;border-color:#fecaca}
.alert-warn{background:var(--warn-bg);color:#92400e;border-color:#fde68a}
.alert-info{background:var(--info-bg);color:#075985;border-color:#bae6fd}

/* ---------- misc ---------- */
.avatar{width:38px;height:38px;border-radius:50%;background:var(--brand-50);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;flex-shrink:0;overflow:hidden}
.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;display:inline-block}
.spinner-dark{border-color:rgba(15,23,42,.2);border-top-color:var(--ink)}
@keyframes spin{to{transform:rotate(360deg)}}
.empty{text-align:center;padding:56px 24px;color:var(--muted)}
.empty svg{width:44px;height:44px;opacity:.35;margin-bottom:12px}
.skeleton{background:linear-gradient(90deg,#eef2f7 25%,#f7f9fc 50%,#eef2f7 75%);background-size:200% 100%;animation:sk 1.3s infinite;border-radius:6px}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* toast */
#toasts{position:fixed;bottom:22px;right:22px;z-index:9999;display:flex;flex-direction:column;gap:10px}
.toast{background:var(--ink);color:#fff;padding:12px 18px;border-radius:var(--r);font-size:.88rem;
  box-shadow:var(--sh-lg);animation:tin .25s ease;max-width:360px}
.toast.ok{background:#065f46}.toast.err{background:#991b1b}
@keyframes tin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* modal */
.modal-bg{position:fixed;inset:0;background:rgba(15,23,42,.55);backdrop-filter:blur(3px);z-index:900;
  display:flex;align-items:center;justify-content:center;padding:20px;animation:fade .2s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{background:#fff;border-radius:var(--r-xl);width:100%;max-width:560px;max-height:90vh;overflow:auto;box-shadow:var(--sh-lg);animation:pop .22s cubic-bezier(.2,.9,.3,1.2)}
.modal-lg{max-width:820px}
@keyframes pop{from{opacity:0;transform:scale(.96) translateY(8px)}to{opacity:1;transform:none}}
.modal-head{padding:20px 24px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.modal-head h3{margin:0}
.modal-body{padding:24px}
.modal-foot{padding:16px 24px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:10px;background:var(--line-2);border-radius:0 0 var(--r-xl) var(--r-xl)}
.x{background:none;border:0;font-size:1.5rem;line-height:1;color:var(--muted);cursor:pointer;padding:0 4px}
.x:hover{color:var(--ink)}

@media (max-width:900px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g3{grid-template-columns:1fr}
}
@media (max-width:640px){
  .g2,.g4,.row{grid-template-columns:1fr}
  h1{font-size:1.55rem}
  .card-pad,.card-body{padding:18px}
}