/* =========================================================================
   VibeEducacional — Design System (identidade visual Vibe)
   ========================================================================= */
:root{
  --bg:#060912;
  --bg-2:#0a0f1c;
  --surface:#0e1422;
  --surface-2:#121b2e;
  --surface-3:#16203a;
  --border:rgba(255,255,255,.07);
  --border-strong:rgba(255,255,255,.13);
  --text:#eaf0fb;
  --text-dim:#9aa6bf;
  --text-dimmer:#69748d;
  --blue:#3b82f6;
  --blue-600:#2563eb;
  --indigo:#4f46e5;
  --purple:#7c3aed;
  --violet:#8b5cf6;
  --green:#22c55e;
  --red:#ef4444;
  --amber:#f59e0b;
  --grad:linear-gradient(135deg,#2563eb 0%,#7c3aed 100%);
  --grad-text:linear-gradient(120deg,#60a5fa 0%,#a78bfa 60%,#c084fc 100%);
  --grad-soft:linear-gradient(135deg,rgba(37,99,235,.16),rgba(124,58,237,.16));
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:22px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --shadow-sm:0 10px 30px -12px rgba(0,0,0,.6);
  --sidebar-w:248px;
  --tabbar-h:60px;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;min-height:100dvh;
  -webkit-text-size-adjust:100%;text-size-adjust:100%;
  -webkit-tap-highlight-color:transparent;
  overscroll-behavior-y:none;
}
.boot{min-height:100vh;min-height:100dvh;display:grid;place-items:center}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 500px at 80% -10%,rgba(124,58,237,.14),transparent 60%),
    radial-gradient(800px 500px at -10% 10%,rgba(37,99,235,.12),transparent 55%);
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
img{max-width:100%;display:block}
::selection{background:rgba(124,58,237,.4)}

/* Scrollbar */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:20px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#22304f}

/* ---------- Tipografia auxiliar ---------- */
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--text-dim)}
.dimmer{color:var(--text-dimmer)}
.center{text-align:center}

/* ---------- Botões ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid var(--border-strong);background:var(--surface-2);color:var(--text);
  padding:11px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:.92rem;
  transition:transform .15s,border-color .15s,background .15s,opacity .15s;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.25)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--grad);border-color:transparent;box-shadow:0 12px 30px -10px rgba(124,58,237,.55)}
.btn-primary:hover{box-shadow:0 16px 38px -10px rgba(124,58,237,.7)}
.btn-ghost{background:transparent}
.btn-danger{background:rgba(239,68,68,.12);border-color:rgba(239,68,68,.4);color:#fca5a5}
.btn-danger:hover{background:rgba(239,68,68,.2)}
.btn-sm{padding:7px 12px;font-size:.82rem;border-radius:10px}
.btn-block{width:100%}
.btn-icon{padding:9px;border-radius:10px}

/* ---------- Formulários ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--text-dim);margin-bottom:7px}
.input,.textarea,.select{
  width:100%;background:var(--bg-2);border:1px solid var(--border-strong);color:var(--text);
  padding:12px 14px;border-radius:var(--radius-sm);font-size:.95rem;font-family:inherit;transition:border-color .15s,box-shadow .15s;
}
.input:focus,.textarea:focus,.select:focus{
  outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.18)
}
.textarea{min-height:110px;resize:vertical}
.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%239aa6bf' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}

/* Upload (dropzone) */
.upload{
  border:1.5px dashed var(--border-strong);border-radius:var(--radius-sm);
  padding:22px;text-align:center;color:var(--text-dim);cursor:pointer;
  transition:border-color .15s,background .15s;background:var(--bg-2);
}
.upload:hover{border-color:var(--violet);background:rgba(124,58,237,.06)}
.upload.has-file{border-style:solid;border-color:rgba(34,197,94,.4);color:var(--text)}
.upload input{display:none}
.upload .up-ic{width:34px;height:34px;margin:0 auto 8px;color:var(--violet)}
.upload .up-hint{font-size:.78rem;color:var(--text-dimmer);margin-top:4px}

/* ---------- Badges / chips ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:.74rem;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.02em}
.badge-grad{background:var(--grad-soft);border:1px solid rgba(124,58,237,.3);color:#c4b5fd}
.badge-green{background:rgba(34,197,94,.14);border:1px solid rgba(34,197,94,.35);color:#86efac}
.badge-gray{background:var(--surface-3);border:1px solid var(--border);color:var(--text-dim)}
.badge-amber{background:rgba(245,158,11,.14);border:1px solid rgba(245,158,11,.35);color:#fcd34d}

/* ---------- Cards genéricos ---------- */
.card{background:linear-gradient(180deg,var(--surface),var(--bg-2));border:1px solid var(--border);border-radius:var(--radius);padding:20px}

/* =========================================================================
   TELA DE LOGIN / CADASTRO
   ========================================================================= */
.auth-wrap{position:relative;z-index:1;min-height:100vh;min-height:100dvh;display:grid;place-items:center;
  padding:calc(24px + env(safe-area-inset-top,0px)) 24px calc(24px + env(safe-area-inset-bottom,0px))}
.auth-card{
  width:100%;max-width:420px;background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border-strong);border-radius:var(--radius-lg);padding:40px 34px;box-shadow:var(--shadow);
}
.auth-logo{display:flex;align-items:center;justify-content:center;gap:11px;margin-bottom:8px}
.auth-logo img{height:42px;width:auto}
.auth-logo .lk{font-weight:800;font-size:1.25rem;letter-spacing:-.02em}
.auth-sub{text-align:center;color:var(--text-dim);font-size:.9rem;margin-bottom:28px}
.auth-tabs{display:flex;gap:6px;background:var(--bg-2);padding:5px;border-radius:12px;margin-bottom:24px}
.auth-tabs button{flex:1;border:none;background:transparent;color:var(--text-dim);padding:9px;border-radius:9px;font-weight:600;font-size:.88rem;transition:.15s}
.auth-tabs button.active{background:var(--surface-3);color:var(--text);box-shadow:var(--shadow-sm)}
.auth-hint{margin-top:18px;font-size:.78rem;color:var(--text-dimmer);text-align:center;line-height:1.6}
.auth-hint code{background:var(--bg-2);padding:2px 7px;border-radius:6px;color:#c4b5fd;font-size:.92em}

/* =========================================================================
   LAYOUT DA APLICAÇÃO (sidebar + conteúdo)
   ========================================================================= */
.app{position:relative;z-index:1;display:flex;min-height:100vh;min-height:100dvh}

.sidebar{
  width:var(--sidebar-w);flex-shrink:0;background:rgba(10,15,28,.7);backdrop-filter:blur(10px);
  border-right:1px solid var(--border);display:flex;flex-direction:column;
  position:sticky;top:0;height:100vh;
}
.sb-brand{display:flex;align-items:center;gap:10px;padding:20px 20px 18px}
.sb-brand img{height:34px;width:auto}
.sb-brand .lk{font-weight:800;font-size:1.05rem;letter-spacing:-.02em;line-height:1.1}
.sb-brand .lk small{display:block;font-size:.62rem;font-weight:600;color:var(--text-dimmer);letter-spacing:.06em}
.sb-nav{flex:1;overflow-y:auto;padding:10px 12px}
.sb-section{font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dimmer);font-weight:700;padding:14px 12px 6px}
.sb-link{
  display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:11px;color:var(--text-dim);
  font-weight:600;font-size:.9rem;transition:.15s;margin-bottom:2px;border:1px solid transparent;
}
.sb-link:hover{background:var(--surface-2);color:var(--text)}
.sb-link.active{background:var(--grad-soft);color:var(--text);border-color:rgba(124,58,237,.28)}
.sb-link svg{width:19px;height:19px;flex-shrink:0}
.sb-foot{padding:14px;border-top:1px solid var(--border)}
.sb-user{display:flex;align-items:center;gap:10px;padding:8px;border-radius:11px}
.sb-user .avatar{width:36px;height:36px;border-radius:10px;background:var(--grad);display:grid;place-items:center;font-weight:700;font-size:.85rem;flex-shrink:0}
.sb-user .meta{min-width:0}
.sb-user .meta b{display:block;font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sb-user .meta span{font-size:.72rem;color:var(--text-dimmer)}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 30px;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5;
  background:rgba(6,9,18,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.tb-titles{min-width:0}
.tb-titles h1{font-size:1.3rem;font-weight:800;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar h1{font-size:1.3rem;font-weight:800;letter-spacing:-.02em}
.topbar .sub{font-size:.84rem;color:var(--text-dim);margin-top:2px}
.topbar-actions{display:flex;align-items:center;gap:10px}
.content{padding:30px;max-width:1180px;width:100%;margin:0 auto}

.menu-toggle{display:none;background:var(--surface-2);border:1px solid var(--border-strong);border-radius:10px;padding:9px}
.menu-toggle svg{width:20px;height:20px}

/* ---------- Estatísticas (dashboard) ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:28px}
.stat{background:linear-gradient(180deg,var(--surface),var(--bg-2));border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden}
.stat .ic{width:42px;height:42px;border-radius:12px;background:var(--grad-soft);display:grid;place-items:center;margin-bottom:14px;color:#c4b5fd}
.stat .ic svg{width:22px;height:22px}
.stat .num{font-size:1.9rem;font-weight:800;letter-spacing:-.02em}
.stat .lbl{font-size:.84rem;color:var(--text-dim)}

/* ---------- Grid de cursos ---------- */
.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-head h2{font-size:1.1rem;font-weight:800}
.courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:20px}
.course-card{
  background:linear-gradient(180deg,var(--surface),var(--bg-2));border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;transition:transform .18s,border-color .18s,box-shadow .18s;cursor:pointer;display:flex;flex-direction:column;
}
.course-card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:var(--shadow-sm)}
.cc-cover{aspect-ratio:16/9;background:var(--grad);position:relative;overflow:hidden}
.cc-cover img{width:100%;height:100%;object-fit:cover}
.cc-cover .ph{position:absolute;inset:0;display:grid;place-items:center;color:rgba(255,255,255,.85);font-weight:800;font-size:1.1rem;text-align:center;padding:16px}
.cc-cover .cc-badge{position:absolute;top:10px;left:10px}
.cc-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.cc-cat{font-size:.74rem;font-weight:700;color:#a78bfa;text-transform:uppercase;letter-spacing:.04em}
.cc-title{font-size:1.02rem;font-weight:700;line-height:1.3}
.cc-desc{font-size:.84rem;color:var(--text-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cc-meta{display:flex;align-items:center;gap:14px;font-size:.78rem;color:var(--text-dimmer);margin-top:auto;padding-top:6px}
.cc-meta span{display:inline-flex;align-items:center;gap:5px}
.cc-meta svg{width:14px;height:14px}

/* Barra de progresso */
.progress{height:7px;background:var(--bg-2);border-radius:999px;overflow:hidden}
.progress>span{display:block;height:100%;background:var(--grad);border-radius:999px;transition:width .4s}
.progress-row{display:flex;align-items:center;gap:10px;font-size:.78rem;color:var(--text-dim)}
.progress-row .progress{flex:1}

/* =========================================================================
   PLAYER DE AULA (área do aluno)
   ========================================================================= */
.player-layout{display:grid;grid-template-columns:1fr 340px;gap:0;min-height:calc(100vh - 0px)}
.player-main{padding:0;min-width:0}
.video-stage{background:#000;aspect-ratio:16/9;width:100%;display:grid;place-items:center;position:relative}
.video-stage video{width:100%;height:100%;background:#000}
.video-empty{color:var(--text-dim);text-align:center;padding:30px}
.video-empty svg{width:54px;height:54px;color:var(--text-dimmer);margin:0 auto 12px}
.lesson-info{padding:26px 30px}
.lesson-info h2{font-size:1.4rem;font-weight:800;margin-bottom:6px}
.lesson-info .li-meta{display:flex;gap:14px;color:var(--text-dim);font-size:.84rem;margin-bottom:18px;flex-wrap:wrap}
.lesson-info .li-desc{color:var(--text-dim);white-space:pre-wrap;line-height:1.7;margin-bottom:22px}
.lesson-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.attach-list{display:flex;flex-direction:column;gap:8px}
.attach{display:flex;align-items:center;gap:11px;padding:12px 14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm)}
.attach svg{width:20px;height:20px;color:#a78bfa;flex-shrink:0}
.attach .a-name{flex:1;font-size:.88rem;font-weight:600;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Lista de aulas (sidebar do player) */
.lesson-rail{border-left:1px solid var(--border);background:rgba(10,15,28,.5);overflow-y:auto;max-height:100vh;position:sticky;top:0}
.rail-head{padding:20px;border-bottom:1px solid var(--border)}
.rail-head h3{font-size:1rem;font-weight:800}
.rail-head .rh-prog{margin-top:12px}
.rail-mod{padding:14px 20px 6px;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-dimmer)}
.rail-lesson{
  display:flex;align-items:center;gap:12px;padding:12px 20px;cursor:pointer;transition:.15s;border-left:3px solid transparent;
}
.rail-lesson:hover{background:var(--surface)}
.rail-lesson.active{background:var(--grad-soft);border-left-color:var(--violet)}
.rail-lesson .rl-ic{width:30px;height:30px;border-radius:8px;background:var(--surface-3);display:grid;place-items:center;flex-shrink:0;color:var(--text-dim)}
.rail-lesson.done .rl-ic{background:rgba(34,197,94,.16);color:#86efac}
.rail-lesson .rl-ic svg{width:16px;height:16px}
.rail-lesson .rl-meta{min-width:0;flex:1}
.rail-lesson .rl-meta b{display:block;font-size:.85rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rail-lesson .rl-meta span{font-size:.74rem;color:var(--text-dimmer)}

/* =========================================================================
   TABELAS (admin: alunos / listagens)
   ========================================================================= */
.table-wrap{background:linear-gradient(180deg,var(--surface),var(--bg-2));border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
table.tbl{width:100%;border-collapse:collapse}
table.tbl th,table.tbl td{padding:14px 18px;text-align:left;font-size:.88rem}
table.tbl th{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text-dimmer);font-weight:700;border-bottom:1px solid var(--border)}
table.tbl td{border-bottom:1px solid var(--border)}
table.tbl tr:last-child td{border-bottom:none}
table.tbl tr:hover td{background:rgba(255,255,255,.015)}
.cell-user{display:flex;align-items:center;gap:11px}
.cell-user .avatar{width:34px;height:34px;border-radius:9px;background:var(--grad);display:grid;place-items:center;font-weight:700;font-size:.8rem;flex-shrink:0}

/* Lista de módulos/aulas no editor do admin */
.builder{display:flex;flex-direction:column;gap:14px}
.mod-block{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.mod-head{display:flex;align-items:center;gap:12px;padding:14px 18px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.mod-head .mh-title{flex:1;font-weight:700}
.mod-head .mh-count{font-size:.78rem;color:var(--text-dimmer)}
.lesson-row{display:flex;align-items:center;gap:12px;padding:12px 18px;border-bottom:1px solid var(--border)}
.lesson-row:last-child{border-bottom:none}
.lesson-row .lr-ic{width:30px;height:30px;border-radius:8px;background:var(--surface-3);display:grid;place-items:center;flex-shrink:0;color:var(--text-dim)}
.lesson-row .lr-ic svg{width:16px;height:16px}
.lesson-row .lr-meta{flex:1;min-width:0}
.lesson-row .lr-meta b{font-size:.9rem;font-weight:600}
.lesson-row .lr-meta span{display:block;font-size:.76rem;color:var(--text-dimmer)}
.empty-row{padding:18px;text-align:center;color:var(--text-dimmer);font-size:.86rem}

/* =========================================================================
   MODAL
   ========================================================================= */
.modal-back{
  position:fixed;inset:0;z-index:100;background:rgba(3,5,12,.72);backdrop-filter:blur(4px);
  display:grid;place-items:center;padding:24px;animation:fade .15s ease;
}
.modal{
  width:100%;max-width:560px;max-height:90vh;overflow-y:auto;background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow);animation:pop .18s ease;
}
.modal.lg{max-width:720px}
.modal-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px 16px}
.modal-head h3{font-size:1.18rem;font-weight:800}
.modal-body{padding:0 24px 8px}
.modal-foot{display:flex;gap:10px;justify-content:flex-end;padding:18px 24px 24px}
.x-btn{background:var(--surface-3);border:1px solid var(--border);border-radius:9px;padding:7px;color:var(--text-dim);line-height:0}
.x-btn:hover{color:var(--text)}
.x-btn svg{width:18px;height:18px}

@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:none}}

/* =========================================================================
   TOASTS
   ========================================================================= */
.toasts{position:fixed;bottom:24px;right:24px;z-index:200;display:flex;flex-direction:column;gap:10px;max-width:340px}
.toast{
  display:flex;align-items:center;gap:11px;padding:13px 16px;border-radius:12px;font-size:.88rem;font-weight:600;
  background:var(--surface-2);border:1px solid var(--border-strong);box-shadow:var(--shadow);animation:slidein .2s ease;
}
.toast svg{width:19px;height:19px;flex-shrink:0}
.toast.ok{border-color:rgba(34,197,94,.4)}.toast.ok svg{color:#86efac}
.toast.err{border-color:rgba(239,68,68,.4)}.toast.err svg{color:#fca5a5}
.toast.info svg{color:#a78bfa}
@keyframes slidein{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:none}}

/* ---------- Estado vazio ---------- */
.empty{text-align:center;padding:60px 20px;color:var(--text-dim)}
.empty .ic{width:64px;height:64px;border-radius:18px;background:var(--grad-soft);display:grid;place-items:center;margin:0 auto 18px;color:#a78bfa}
.empty .ic svg{width:32px;height:32px}
.empty h3{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:6px}
.empty p{font-size:.9rem;max-width:380px;margin:0 auto 18px}

/* ---------- Utilidades de layout ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.row{display:flex;gap:12px;align-items:center}
.row-between{display:flex;gap:12px;align-items:center;justify-content:space-between}
.wrap{flex-wrap:wrap}
.mt{margin-top:16px}.mt-lg{margin-top:26px}
.spinner{width:40px;height:40px;border:3px solid var(--surface-3);border-top-color:var(--violet);border-radius:50%;animation:spin .7s linear infinite;margin:60px auto}
@keyframes spin{to{transform:rotate(360deg)}}

/* =========================================================================
   ÁREA DO ALUNO — EXPERIÊNCIA CINEMA (estilo Netflix)
   Classes novas, isoladas do admin. A home do aluno roda full-bleed
   (a view zera o padding/max-width do .content).
   ========================================================================= */
.stu{display:flex;flex-direction:column;gap:6px;padding-bottom:64px;animation:fade .3s ease}

/* ---------- Capa "inteligente" (placeholder colorido quando não há imagem) ---------- */
.cover-ph{position:absolute;inset:0;display:flex;align-items:flex-end;padding:14px;overflow:hidden}
.cover-ph::before{content:"";position:absolute;inset:0;background:var(--ph-grad,linear-gradient(135deg,#2563eb,#7c3aed))}
.cover-ph::after{content:"";position:absolute;inset:0;
  background:radial-gradient(130% 90% at 78% -10%,rgba(255,255,255,.22),transparent 52%),
             linear-gradient(180deg,transparent 38%,rgba(0,0,0,.5))}
.cover-ph .ph-mark{position:absolute;top:12px;left:14px;z-index:1;font-weight:800;font-size:.74rem;letter-spacing:.14em;
  text-transform:uppercase;color:rgba(255,255,255,.85)}
.cover-ph .ph-title{position:relative;z-index:1;font-weight:800;font-size:1.02rem;line-height:1.22;letter-spacing:-.01em;
  text-shadow:0 2px 16px rgba(0,0,0,.55);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- HERO / BILLBOARD ---------- */
.hero{position:relative;min-height:min(62vh,540px);display:flex;align-items:flex-end;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg .cover-ph{padding:0}
.hero-bg .cover-ph .ph-title,.hero-bg .cover-ph .ph-mark{display:none}
.hero::before{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(6,9,18,.97) 0%,rgba(6,9,18,.78) 30%,rgba(6,9,18,.2) 62%,transparent 100%)}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:58%;z-index:1;
  background:linear-gradient(180deg,transparent,var(--bg))}
.hero-content{position:relative;z-index:2;max-width:680px;padding:48px 30px 40px;width:100%;animation:heroIn .55s cubic-bezier(.2,.7,.2,1) both}
.hero-badges{display:flex;gap:8px;align-items:center;margin-bottom:14px;flex-wrap:wrap}
.hero-eyebrow{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:.78rem;letter-spacing:.04em;color:#c4b5fd}
.hero-eyebrow svg{width:16px;height:16px}
.hero-title{font-size:clamp(1.9rem,4.6vw,3.3rem);font-weight:800;line-height:1.03;letter-spacing:-.03em;margin-bottom:14px;
  text-shadow:0 4px 34px rgba(0,0,0,.55)}
.hero-desc{font-size:1.02rem;color:#d7dff1;max-width:560px;line-height:1.6;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;text-shadow:0 2px 14px rgba(0,0,0,.5)}
.hero-meta{display:flex;align-items:center;gap:18px;color:#cfd8ec;font-size:.88rem;margin-bottom:18px;flex-wrap:wrap}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta svg{width:16px;height:16px;opacity:.85}
.hero-prog{max-width:340px;margin-bottom:22px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-actions .btn{padding:13px 28px;font-size:1rem}
.btn-light{background:#fff;color:#0b0f1a;border-color:#fff}
.btn-light:hover{background:#e9eefb;box-shadow:0 16px 40px -14px rgba(255,255,255,.4)}
.btn-glass{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.26);backdrop-filter:blur(6px);color:#fff}
.btn-glass:hover{background:rgba(255,255,255,.22)}
@keyframes heroIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}

/* ---------- FILEIRAS / PRATELEIRAS (carrosséis horizontais) ---------- */
.shelf{position:relative;margin:30px 0 2px}
.shelf-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:13px;padding:0 30px}
.shelf-head h2{font-size:1.2rem;font-weight:800;letter-spacing:-.01em}
.shelf-track{display:flex;gap:14px;overflow-x:auto;scroll-behavior:smooth;padding:8px 30px 16px;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none}
.shelf-track::-webkit-scrollbar{display:none}
.shelf-arrow{position:absolute;top:50px;bottom:20px;width:60px;z-index:6;border:none;color:#fff;cursor:pointer;
  background:linear-gradient(90deg,rgba(6,9,18,.92),transparent);display:flex;align-items:center;justify-content:flex-start;
  padding-left:8px;opacity:0;transition:opacity .2s}
.shelf-arrow.right{right:0;background:linear-gradient(270deg,rgba(6,9,18,.92),transparent);justify-content:flex-end;padding:0 8px 0 0}
.shelf-arrow.left{left:0}
.shelf-arrow svg{width:30px;height:30px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.7))}
.shelf:hover .shelf-arrow{opacity:1}
.shelf-arrow:hover svg{transform:scale(1.18)}

/* ---------- PÔSTER (card de curso na vitrine) ---------- */
.poster{position:relative;flex:0 0 auto;width:290px;aspect-ratio:16/9;border-radius:12px;overflow:hidden;cursor:pointer;
  background:var(--surface-2);scroll-snap-align:start;border:1px solid var(--border);
  transition:transform .3s cubic-bezier(.2,.7,.2,1),box-shadow .3s,border-color .2s;will-change:transform}
.poster img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.poster .poster-grad{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,transparent 42%,rgba(0,0,0,.84));transition:background .3s}
.poster-body{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:12px 13px}
.poster-cat{font-size:.65rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:#c9b8ff;margin-bottom:3px}
.poster-title{font-size:.97rem;font-weight:700;line-height:1.2;text-shadow:0 2px 10px rgba(0,0,0,.7);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.poster-sub{font-size:.76rem;color:#cdd6ea;margin-top:4px;opacity:0;max-height:0;transition:opacity .25s,max-height .3s;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.poster-play{position:absolute;top:46%;left:50%;transform:translate(-50%,-50%) scale(.55);z-index:3;
  width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.95);color:#0b0f1a;display:grid;place-items:center;
  opacity:0;transition:opacity .25s,transform .3s;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.poster-play svg{width:22px;height:22px;margin-left:3px}
.poster-prog{position:absolute;left:0;right:0;bottom:0;z-index:4;height:4px;background:rgba(255,255,255,.22)}
.poster-prog>span{display:block;height:100%;background:var(--grad)}
.poster .badge-done{position:absolute;top:9px;right:9px;z-index:3}
.poster:hover{transform:scale(1.075) translateY(-2px);box-shadow:0 28px 54px -18px rgba(0,0,0,.9);border-color:var(--border-strong);z-index:5}
.poster:hover .poster-play{opacity:1;transform:translate(-50%,-50%) scale(1)}
.poster:hover .poster-sub{opacity:1;max-height:42px}
.poster:hover .poster-grad{background:linear-gradient(180deg,rgba(0,0,0,.32) 0%,rgba(0,0,0,.5) 48%,rgba(0,0,0,.9))}

/* Pôster bloqueado: curso disponível na plataforma, mas acesso ainda não liberado */
.poster.locked img,.poster.locked .cover-ph{filter:grayscale(.35) brightness(.6)}
.poster.locked .poster-grad{background:linear-gradient(180deg,rgba(0,0,0,.45),rgba(0,0,0,.85))}
.poster-lock{position:absolute;top:46%;left:50%;transform:translate(-50%,-50%);z-index:3;
  width:46px;height:46px;border-radius:50%;background:rgba(8,10,18,.72);border:1px solid rgba(255,255,255,.26);
  display:grid;place-items:center;color:#e7ecf8;backdrop-filter:blur(4px);transition:background .25s,border-color .25s}
.poster-lock svg{width:20px;height:20px}
.poster.locked:hover{transform:scale(1.05) translateY(-2px)}
.poster.locked:hover .poster-lock{background:rgba(124,58,237,.55);border-color:rgba(167,139,250,.65)}

/* Boas-vindas (aluno ainda sem cursos liberados) */
.welcome{position:relative;margin-bottom:4px;padding:50px 30px 42px;overflow:hidden;border-bottom:1px solid var(--border);
  background:radial-gradient(900px 420px at 16% -25%,rgba(124,58,237,.34),transparent 60%),
             radial-gradient(820px 420px at 92% -10%,rgba(37,99,235,.26),transparent 58%),
             linear-gradient(180deg,var(--surface),var(--bg))}
.welcome-inner{position:relative;z-index:1;max-width:680px;animation:heroIn .5s cubic-bezier(.2,.7,.2,1) both}
.welcome-badge{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:.8rem;
  padding:6px 12px;border-radius:999px;background:rgba(34,197,94,.14);border:1px solid rgba(34,197,94,.35);color:#86efac;margin-bottom:16px}
.welcome-badge svg{width:16px;height:16px}
.welcome h1{font-size:clamp(1.7rem,3.6vw,2.6rem);font-weight:800;letter-spacing:-.02em;margin-bottom:12px;line-height:1.08}
.welcome p{font-size:1.02rem;color:#d7dff1;line-height:1.6;max-width:570px}

/* Cadeado grande no modal de acesso bloqueado */
.empty-lock{width:64px;height:64px;border-radius:18px;background:var(--grad-soft);display:grid;place-items:center;
  margin:0 auto 16px;color:#c4b5fd}
.empty-lock svg{width:30px;height:30px}

/* ---------- PLAYER imersivo (refinamentos) ---------- */
.player-main{background:#000}
.video-stage{box-shadow:inset 0 0 140px -30px rgba(124,58,237,.35)}
.lesson-info{padding:28px 34px;max-width:900px}
.lesson-info h2{font-size:1.55rem;letter-spacing:-.02em}
.rail-lesson.active{box-shadow:inset 0 0 0 1px rgba(124,58,237,.25)}
.rail-lesson.active .rl-ic{background:var(--grad);color:#fff}

/* ---------- LOGIN cinematográfico ---------- */
.auth-wrap{overflow:hidden}
.auth-wrap::before{content:"";position:absolute;inset:-10%;z-index:0;pointer-events:none;
  background:
    radial-gradient(760px 520px at 16% 18%,rgba(37,99,235,.30),transparent 56%),
    radial-gradient(720px 600px at 84% 82%,rgba(124,58,237,.32),transparent 56%),
    radial-gradient(560px 460px at 72% 8%,rgba(192,132,252,.18),transparent 52%);
  filter:blur(8px)}
.auth-wrap::after{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(120% 90% at 50% 120%,rgba(6,9,18,.7),transparent 60%),linear-gradient(180deg,transparent,rgba(6,9,18,.4))}
.auth-card{position:relative;z-index:1;backdrop-filter:blur(16px);
  background:linear-gradient(180deg,rgba(18,27,46,.84),rgba(14,20,34,.86));box-shadow:0 40px 90px -30px rgba(0,0,0,.8)}
.auth-logo img{height:46px}

/* =========================================================================
   APP NATIVO — barra de abas (celular), instalação, foco, movimento
   ========================================================================= */
/* Barra de abas inferior: escondida no desktop (lá usamos a sidebar) */
.tabbar{display:none}

/* Botão "Instalar app" some quando já roda como app instalado */
body.is-standalone [data-install]{display:none !important}

/* Passo a passo de instalação (modal) */
.install-steps{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:11px;
  color:var(--text-dim);line-height:1.6;font-size:.93rem}
.install-steps b{color:var(--text)}
.install-steps svg{width:16px;height:16px;vertical-align:-3px;color:#a78bfa}

/* Foco visível por teclado (acessibilidade) */
:focus-visible{outline:2px solid var(--violet);outline-offset:2px;border-radius:6px}

/* Respeita quem prefere menos animações */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* =========================================================================
   RESPONSIVO
   ========================================================================= */
@media (max-width:980px){
  .player-layout{grid-template-columns:1fr}
  .lesson-rail{border-left:none;border-top:1px solid var(--border);max-height:none;position:static}
}

/* ---------- CELULAR / TABLET: a sidebar dá lugar à barra de abas ---------- */
@media (max-width:820px){
  .sidebar{display:none}
  .content{padding:18px 16px;padding-bottom:calc(26px + var(--tabbar-h))}
  .topbar{padding:calc(12px + env(safe-area-inset-top,0px)) 16px 12px}
  .tb-titles h1{font-size:1.18rem}

  /* Barra de abas no padrão de app nativo (Material/iOS) */
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;
    background:rgba(9,13,24,.92);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-top:1px solid var(--border);
    height:calc(var(--tabbar-h) + env(safe-area-inset-bottom,0px));
    padding-bottom:env(safe-area-inset-bottom,0px);
    box-shadow:0 -10px 30px -16px rgba(0,0,0,.7);
  }
  .tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
    color:var(--text-dimmer);font-weight:600;font-size:.66rem;letter-spacing:.01em;
    padding:7px 4px 6px;min-height:48px;-webkit-tap-highlight-color:transparent}
  .tab-ic{display:grid;place-items:center;width:48px;height:30px;border-radius:999px;transition:background .2s,color .2s,transform .12s}
  .tab-ic svg{width:23px;height:23px}
  .tab.active{color:#dcd5ff}
  .tab.active .tab-ic{background:var(--grad-soft);color:#c4b5fd}
  .tab:active .tab-ic{transform:scale(.9)}

  /* Espaço para a barra de abas em telas full-bleed */
  .stu{padding-bottom:calc(30px + var(--tabbar-h))}
  .lesson-rail{padding-bottom:calc(16px + var(--tabbar-h))}

  /* Áreas de toque maiores (recomendação das lojas: ~44px) */
  .btn{min-height:44px}
  .btn-sm{min-height:38px}

  /* Cinema — ajustes para telas menores */
  .shelf-head,.shelf-track{padding-left:16px;padding-right:16px}
  .hero-content{padding:34px 16px 28px}
  .hero{min-height:min(64vh,460px)}
  .poster{width:232px}
  .lesson-info{padding:22px 16px}
}

/* ---------- Celular pequeno ---------- */
@media (max-width:560px){
  .grid-2{grid-template-columns:1fr}
  .modal-head,.modal-body,.modal-foot{padding-left:18px;padding-right:18px}

  /* Inputs com 16px evitam o "zoom automático" do iOS ao focar o campo */
  .input,.textarea,.select{font-size:16px}

  /* Toasts acima da barra de abas, largura total */
  .toasts{left:12px;right:12px;bottom:calc(12px + var(--tabbar-h));max-width:none}

  /* Modais viram "bottom sheet" (sobem de baixo, como app nativo) */
  .modal-back{align-items:flex-end;padding:0}
  .modal,.modal.lg{max-width:none;width:100%;max-height:92vh;border-radius:22px 22px 0 0;
    animation:sheetUp .26s cubic-bezier(.2,.7,.2,1)}
  .modal-foot{position:sticky;bottom:0;background:linear-gradient(180deg,transparent,var(--surface) 34%);
    padding-bottom:calc(18px + env(safe-area-inset-bottom,0px))}

  /* Cinema */
  .poster{width:78vw;max-width:300px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1;justify-content:center}
  .shelf-arrow{display:none}
  .hero::before{background:linear-gradient(180deg,rgba(6,9,18,.12) 0%,rgba(6,9,18,.55) 52%,rgba(6,9,18,.96) 100%)}
}

@keyframes sheetUp{from{transform:translateY(100%)}to{transform:none}}

/* =========================================================================
   ENGAJAMENTO — gamificação, busca, quiz, anotações, certificado
   ========================================================================= */
/* Barra da vitrine: XP/ofensiva + busca/filtros */
.stu-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 30px 4px}
.stu-stats{display:flex;gap:10px;flex-wrap:wrap}
.chip-xp,.chip-streak{display:inline-flex;align-items:center;gap:7px;font-size:.82rem;font-weight:700;padding:7px 13px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border-strong)}
.chip-xp svg{width:16px;height:16px;color:#c4b5fd}
.chip-xp b,.chip-streak b{color:#fff}
.chip-streak{background:linear-gradient(135deg,rgba(245,158,11,.16),rgba(239,68,68,.14));border-color:rgba(245,158,11,.3)}
.search-row{display:flex;gap:10px;flex-wrap:wrap;flex:1;justify-content:flex-end;min-width:260px}
.search{position:relative;display:flex;align-items:center;flex:1;max-width:340px;min-width:170px}
.search svg{position:absolute;left:12px;width:17px;height:17px;color:var(--text-dimmer);pointer-events:none}
.search input{width:100%;background:var(--bg-2);border:1px solid var(--border-strong);color:var(--text);padding:11px 14px 11px 38px;border-radius:999px;font-size:.9rem;font-family:inherit}
.search input:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.18)}
.search-row .select{max-width:190px;border-radius:999px}
.result-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:16px;padding:6px 30px 24px}
.result-grid .poster{width:auto}

/* Aviso "faltam X aulas" */
.faltam{display:flex;align-items:center;gap:9px;flex-wrap:wrap;background:var(--grad-soft);border:1px solid rgba(124,58,237,.26);border-radius:14px;padding:12px 16px;font-size:.92rem;color:#d7dff1;margin-bottom:18px}
.faltam svg{width:18px;height:18px;color:#c4b5fd;flex-shrink:0}
.faltam b{color:#fff}

/* Velocidade do vídeo */
.vel-wrap{display:inline-flex;align-items:center;gap:6px}
.vel-sel{background:var(--surface-2);border:1px solid var(--border-strong);color:var(--text);border-radius:8px;padding:3px 6px;font-family:inherit;font-size:.82rem}

/* Quiz */
.quiz{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin:6px 0 18px}
.quiz>h3{display:flex;align-items:center;gap:8px;font-size:1.02rem;margin-bottom:14px}
.quiz>h3 svg{width:18px;height:18px;color:#c4b5fd}
.quiz-q{padding:12px;border:1px solid var(--border);border-radius:12px;margin-bottom:10px;transition:border-color .2s,background .2s}
.quiz-q.certo{border-color:rgba(34,197,94,.5);background:rgba(34,197,94,.07)}
.quiz-q.errado{border-color:rgba(239,68,68,.5);background:rgba(239,68,68,.07)}
.quiz-p{font-weight:600;margin-bottom:10px;font-size:.94rem}
.quiz-op{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:9px;cursor:pointer;font-size:.9rem;transition:background .15s}
.quiz-op:hover{background:var(--surface-2)}
.quiz-op input{accent-color:var(--violet);width:17px;height:17px;flex-shrink:0}
.quiz-result{margin-top:10px;font-weight:700;font-size:.9rem}
.quiz-result.tudo{color:#86efac}
.quiz-result.parcial{color:#fcd34d}

/* Editor de quiz (admin) */
.qz-edit{border:1px solid var(--border);border-radius:12px;padding:13px;margin-bottom:10px;background:var(--bg-2)}
.qz-edit-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px;font-size:.86rem}
.qz-edit .q-perg{margin-bottom:9px}
.qz-ops{display:flex;flex-direction:column;gap:7px}
.qz-op-edit{display:flex;align-items:center;gap:9px}
.qz-op-edit input[type=radio]{accent-color:var(--violet);width:17px;height:17px;flex-shrink:0}

/* Anotações */
.notas{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin:6px 0 18px}
.notas>h3{display:flex;align-items:center;gap:8px;font-size:1.02rem;margin-bottom:12px}
.notas>h3 svg{width:17px;height:17px;color:#c4b5fd}
.notas textarea{min-height:90px}
.notas-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px}

/* Autoplay (próxima aula) */
.autoplay-ov{position:absolute;inset:0;z-index:8;display:grid;place-items:center;background:rgba(3,5,12,.66);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);animation:fade .2s ease}
.ap-card{text-align:center;max-width:340px;padding:18px}
.ap-label{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#c4b5fd;margin-bottom:6px}
.ap-title{font-size:1.2rem;font-weight:800;margin-bottom:6px;color:#fff}
.ap-count{color:#cfd8ec;margin-bottom:16px;font-size:.92rem}
.ap-count b{color:#fff;font-size:1.05rem}
.ap-btns{display:flex;gap:10px;justify-content:center}

/* Confete */
.confetti-canvas{position:fixed;inset:0;z-index:300;pointer-events:none}

/* Onboarding */
.onb{display:flex;flex-direction:column;gap:14px}
.onb-item{display:flex;gap:13px;align-items:flex-start}
.onb-ic{width:42px;height:42px;border-radius:12px;background:var(--grad-soft);display:grid;place-items:center;color:#c4b5fd;flex-shrink:0}
.onb-ic svg{width:21px;height:21px}
.onb-item b{display:block;margin-bottom:2px}
.onb-item p{font-size:.88rem;color:var(--text-dim);line-height:1.5}

/* Consentimento (login) */
.consent{display:flex;align-items:flex-start;gap:9px;font-size:.84rem;color:var(--text-dim);line-height:1.5;cursor:pointer;margin-bottom:4px}
.consent input{margin-top:2px;accent-color:var(--violet);width:16px;height:16px;flex-shrink:0}
.consent a{color:#a78bfa;text-decoration:underline}
.auth-foot{margin-top:16px;text-align:center}
.auth-foot a{font-size:.78rem;color:var(--text-dimmer)}
.auth-foot a:hover{color:#a78bfa}

/* Política (texto longo) */
.prose p{margin-bottom:11px;color:var(--text-dim);line-height:1.65;font-size:.92rem}
.prose b{color:var(--text)}

/* Conquistas (perfil) */
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.badge-card{text-align:center;padding:16px 12px;border-radius:14px;border:1px solid var(--border);background:var(--surface)}
.badge-card .bc-ic{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;margin:0 auto 9px}
.badge-card .bc-ic svg{width:22px;height:22px}
.badge-card b{display:block;font-size:.86rem}
.badge-card span{font-size:.74rem;color:var(--text-dimmer)}
.badge-card.on{border-color:rgba(124,58,237,.4);background:linear-gradient(180deg,rgba(124,58,237,.12),var(--surface))}
.badge-card.on .bc-ic{background:var(--grad);color:#fff}
.badge-card.off{opacity:.5}
.badge-card.off .bc-ic{background:var(--surface-3);color:var(--text-dimmer)}

/* Certificados (lista no perfil) */
.cert-list{display:flex;flex-direction:column;gap:10px}
.cert-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 15px;border:1px solid var(--border);border-radius:12px;background:var(--surface)}
.cert-item b{font-size:.92rem}

/* Certificado (overlay + impressão) — papel claro, imprime legível */
.cert-overlay{position:fixed;inset:0;z-index:250;background:rgba(3,5,12,.85);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);overflow:auto;padding:20px;display:flex;flex-direction:column;align-items:center;gap:16px}
.cert-tools{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;width:100%;max-width:900px;padding-top:env(safe-area-inset-top,0px)}
.cert-print{width:100%;max-width:900px}
.cert{position:relative;aspect-ratio:1.414/1;color:#10152a;border-radius:8px;padding:6% 8%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;box-shadow:var(--shadow);overflow:hidden;
  border:10px solid transparent;
  background:linear-gradient(#ffffff,#f4f2fc) padding-box,linear-gradient(135deg,#2563eb,#7c3aed,#c084fc) border-box;
  -webkit-print-color-adjust:exact;print-color-adjust:exact}
.cert::before{content:"";position:absolute;inset:0;background:radial-gradient(80% 60% at 50% -10%,rgba(124,58,237,.10),transparent 60%);pointer-events:none}
.cert-top{display:flex;align-items:center;gap:10px;margin-bottom:3%}
.cert-top img{height:34px}
.cert-top .lk{font-weight:800;font-size:1.05rem;color:#1a1147}
.cert-top .grad-text{-webkit-text-fill-color:#7c3aed;color:#7c3aed;background:none}
.cert-medal{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#7c3aed);display:grid;place-items:center;color:#fff;margin-bottom:12px}
.cert-medal svg{width:30px;height:30px}
.cert h2{font-size:1.4rem;font-weight:800;letter-spacing:.04em;margin-bottom:12px;color:#1a1147;text-transform:uppercase}
.cert-sub,.cert-txt{color:#5b6478;font-size:.9rem}
.cert-name{font-size:2rem;font-weight:800;color:#4f46e5;margin:6px 0 10px;line-height:1.1}
.cert-course{font-size:1.25rem;font-weight:700;margin:6px 0;color:#1a1147}
.cert-meta{color:#6b7280;font-size:.84rem}
.cert-foot{display:flex;align-items:flex-end;justify-content:space-between;width:100%;margin-top:auto;padding-top:6%;gap:20px}
.cert-sign{font-size:.82rem;color:#475569}
.cert-line{width:170px;max-width:38vw;border-top:1.5px solid #94a3b8;margin-bottom:6px}
.cert-date{font-size:.82rem;color:#475569}

@media (max-width:560px){
  .stu-bar{padding:14px 16px 4px}
  .search-row{min-width:0}
  .cert h2{font-size:1.05rem}.cert-name{font-size:1.45rem}.cert-course{font-size:1rem}.cert-medal{width:48px;height:48px}
}

/* Impressão: mostra apenas o certificado */
@media print{
  body * { visibility:hidden !important; }
  .cert-overlay, .cert-print, .cert-print * { visibility:visible !important; }
  .cert-overlay{position:absolute;inset:0;background:#fff;padding:0;display:block}
  .cert-tools{display:none !important}
  .cert-print{max-width:none}
  .cert{box-shadow:none;border-width:8px}
  body::before{display:none}
}

/* Aula bloqueada (liberação progressiva) */
.rail-lesson.bloq{opacity:.5;cursor:not-allowed}
.rail-lesson.bloq:hover{background:transparent}
.rail-lesson.bloq .rl-ic{color:var(--text-dimmer)}