:root{ --bg:#0f172a; --card:#111827; --muted:#94a3b8; --text:#e5e7eb; --accent:#22c55e; --accent-2:#60a5fa; --danger:#ef4444; }
*{box-sizing:border-box}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial;margin:0;background:linear-gradient(180deg,#0b1022 0,#0f172a 80%);color:var(--text)}
.container{max-width:1080px;margin:0 auto;padding:24px}
.header{display:flex;gap:12px;align-items:center;margin-bottom:20px}
.logo{width:40px;height:40px;border-radius:10px;background:radial-gradient(circle at 30% 30%, var(--accent), #16a34a 60%); box-shadow:0 10px 30px rgba(34,197,94,.3)}
h1{margin:0;font-weight:800;letter-spacing:.3px}
.hint{color:var(--muted);font-size:.95rem}

/* Força empilhamento vertical (Enviar acima de Últimos) */
.grid.stack{display:grid;grid-template-columns:1fr;gap:24px}
/* Remove qualquer regra antiga de duas colunas */
@media(min-width:900px){.grid.stack{grid-template-columns:1fr}}

.card{background:rgba(17,24,39,.85); backdrop-filter:blur(10px); border:1px solid rgba(255,255,255,.06); border-radius:16px; padding:20px; box-shadow:0 10px 30px rgba(0,0,0,.25)}
label{display:block;margin:8px 0 6px;font-size:.95rem;color:var(--muted)}
.file, .text{width:100%;padding:14px;border:1px solid rgba(148,163,184,.35);border-radius:12px;background:#0b1220;color:var(--text)}
.form-row{display:grid;grid-template-columns:1fr;gap:16px}
.form-field{display:block}
.actions{display:flex;gap:12px;align-items:center;margin-top:12px;flex-wrap:wrap}
.btn{appearance:none;border:0;border-radius:12px;padding:12px 16px;font-weight:700;cursor:pointer;background:var(--accent-2);color:white;text-decoration:none;display:inline-block}
.btn-primary{background:linear-gradient(90deg,var(--accent-2),#3b82f6)}
.btn-success{background:linear-gradient(90deg,#22c55e,#16a34a)}
.btn-ghost{background:transparent;color:var(--muted);border:1px solid rgba(148,163,184,.3)}
.table-wrap{overflow:auto}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid rgba(255,255,255,.08); text-align:left}
.table th{color:#a5b4fc;font-weight:700}
code{background:#0b1220;padding:3px 6px;border-radius:6px}
.link{color:#93c5fd}

/* file list */
.file-list{list-style:none;margin:8px 0 0;padding:0}
.file-list li{padding:6px 8px;border:1px dashed rgba(148,163,184,.25);border-radius:10px;margin-bottom:6px;background:rgba(11,18,32,.6)}

/* overlay */
.overlay{position:fixed;inset:0;background:rgba(2,6,23,.75);display:none;align-items:center;justify-content:center;z-index:9999}
.overlay.show{display:flex}
.overlay-box{text-align:center}
.spinner{width:64px;height:64px;border-radius:50%;border:6px solid rgba(255,255,255,.15);border-top-color:white;animation:spin 1s linear infinite;margin:0 auto}
@keyframes spin{to{transform:rotate(360deg)}}
.overlay-msg{margin-top:16px;color:#c7d2fe;font-weight:700}

/* result cards */
.ok{border-left:4px solid var(--accent)}
.fail{border-left:4px solid var(--danger)}

/* Dropzone */
.dropzone{border:2px dashed rgba(148,163,184,.35);border-radius:12px;padding:18px;text-align:center;margin-bottom:12px;background:#0b1220;color:#cbd5e1}
.dropzone.drag{background:#0a1329;border-color:#60a5fa;color:#e5edff}