:root{--bg:#f0f4f8;--surface:#fff;--border:#e2e8f0;--txt:#0f172a;--txt2:#475569;--txt3:#94a3b8;--primary:#0284c7;--primary-d:#0369a1;--primary-l:#38bdf8;--success:#059669;--danger:#dc2626}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--txt);min-height:100vh;min-height:100dvh;-webkit-font-smoothing:antialiased}

/* Header */
.header{background:linear-gradient(135deg,#0c4a6e 0%,#0284c7 50%,#0ea5e9 100%);color:#fff;padding:0;position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(2,132,199,.2)}
.header-inner{max-width:600px;margin:0 auto;padding:12px 16px;display:flex;justify-content:space-between;align-items:center;gap:8px}

.header-logo{height:30px;width:auto;flex-shrink:0}

.header h1{font-size:1rem;font-weight:800;letter-spacing:-.01em;flex:1;text-align:center}
.header-sub{font-size:.65rem;font-weight:500;opacity:.7;text-transform:uppercase;letter-spacing:.06em}
.header-link{color:rgba(255,255,255,.85);font-size:.78rem;font-weight:600;text-decoration:none;padding:7px 14px;border:1.5px solid rgba(255,255,255,.3);border-radius:8px;transition:.15s}
.header-link:hover{background:rgba(255,255,255,.15)}

/* Main */
.main{max-width:600px;margin:0 auto;padding:20px 16px 80px}

/* Alerts */
.alert{padding:14px 18px;border-radius:12px;margin-bottom:18px;font-size:.85rem;font-weight:600;display:flex;align-items:center;gap:10px}
.alert.ok{background:#d1fae5;color:#065f46;border:1px solid #6ee7b7}
.alert.ok::before{content:'✓';font-size:1.1rem}
.alert.err{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}
.alert.err::before{content:'✕';font-size:1.1rem}

/* Form card */
.form-card{background:#fff;border-radius:18px;padding:26px 22px;box-shadow:0 1px 3px rgba(15,23,42,.04),0 4px 12px rgba(15,23,42,.03);border:1px solid rgba(226,232,240,.6)}

/* Fields */
.field{margin-bottom:20px}
.field label{display:block;font-size:.75rem;font-weight:700;color:var(--primary-d);text-transform:uppercase;letter-spacing:.06em;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:13px 15px;border:1.5px solid var(--border);border-radius:11px;font-family:inherit;font-size:.9rem;background:#fff;color:var(--txt);transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(2,132,199,.1)}
.field textarea{resize:vertical}
.field select{-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='2' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}

.row-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* Checks */
.checks-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.check-item{display:flex;align-items:center;gap:10px;padding:13px 14px;border:1.5px solid var(--border);border-radius:11px;cursor:pointer;transition:.2s;font-size:.88rem;font-weight:500;background:#fff}
.check-item:hover{border-color:var(--primary);background:#f0f9ff}
.check-item input{display:none}
.check-box{width:22px;height:22px;border:2px solid #cbd5e1;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:.2s}
.check-item input:checked ~ .check-box{background:var(--primary);border-color:var(--primary)}
.check-item input:checked ~ .check-box::after{content:'✓';color:#fff;font-size:.8rem;font-weight:800}
.check-item input:checked ~ span:last-child{font-weight:700;color:var(--primary-d)}

/* File area */
.file-area{border:2px dashed #cbd5e1;border-radius:14px;padding:22px;text-align:center;cursor:pointer;position:relative;min-height:100px;transition:.2s;background:#fafbfc}
.file-area:hover{border-color:var(--primary);background:#f0f9ff}
.file-area input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.file-placeholder{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--txt3);font-size:.85rem}
.file-icon{font-size:2.2rem}
.file-preview{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:8px}
.preview-item{position:relative;border-radius:8px;overflow:hidden;background:#f1f5f9}
.preview-item img{width:100%;height:80px;object-fit:cover;display:block}
.preview-video{display:flex;align-items:center;justify-content:center;height:80px;font-size:.75rem;color:var(--txt2);padding:8px}
.preview-size{position:absolute;bottom:2px;right:4px;font-size:.6rem;background:rgba(0,0,0,.6);color:#fff;padding:1px 5px;border-radius:4px}

/* Audio */
.btn-audio{width:100%;padding:20px;background:#fafbfc;border:2px dashed #cbd5e1;border-radius:12px;font-size:.9rem;font-weight:600;color:var(--txt2);cursor:pointer;transition:.2s;display:flex;flex-direction:column;align-items:center;gap:6px}
.btn-audio:hover{border-color:var(--primary);background:#f0f9ff;color:var(--primary)}

/* Submit */
.btn-submit{width:100%;padding:15px;background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;border:none;border-radius:12px;font-size:1rem;font-weight:700;cursor:pointer;transition:.2s;box-shadow:0 2px 8px rgba(2,132,199,.25)}
.btn-submit:hover{filter:brightness(1.05);transform:translateY(-1px);box-shadow:0 4px 14px rgba(2,132,199,.35)}
.btn-submit:disabled{opacity:.6;cursor:not-allowed;transform:none}
.submit-note{text-align:center;font-size:.72rem;color:var(--txt3);margin-top:8px}

/* Mis registros */
.reg-list{display:flex;flex-direction:column;gap:10px}
.reg-card{display:block;background:#fff;border-radius:14px;padding:16px 18px;text-decoration:none;color:inherit;transition:.2s;box-shadow:0 1px 3px rgba(15,23,42,.04);border:1px solid rgba(226,232,240,.6)}
.reg-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 4px 12px rgba(2,132,199,.1)}
.reg-folio{font-size:.72rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.04em}
.reg-cliente{font-size:1rem;font-weight:700;margin:3px 0}
.reg-meta{font-size:.78rem;color:var(--txt3)}
.reg-status{display:inline-block;padding:3px 9px;border-radius:99px;font-size:.65rem;font-weight:700;text-transform:uppercase}
.reg-status.enviado{background:#d1fae5;color:#065f46}
.reg-status.editado{background:#fef3c7;color:#92400e}
.reg-status.borrador{background:#f1f5f9;color:#475569}

.empty{text-align:center;padding:40px 20px;color:var(--txt3);font-size:.9rem}

/* Section divider */
.section-divider{display:flex;align-items:center;gap:10px;margin:22px 0 16px;font-size:.72rem;font-weight:700;color:var(--txt3);text-transform:uppercase;letter-spacing:.06em}
.section-divider::after{content:'';flex:1;height:1px;background:var(--border)}

@media(max-width:500px){
  .row-2{grid-template-columns:1fr}
  .checks-grid{grid-template-columns:1fr}
  .header h1{font-size:.95rem}
  .header-sub{display:none}
}

@media(max-width:400px){
  .header-inner{padding:10px 12px}
  .header-logo{height:26px}
  .header h1{font-size:.85rem}
  .header-link{padding:5px 10px;font-size:.72rem}
  .main{padding:14px 10px 60px}
  .form-card{padding:18px 14px;border-radius:14px}
  .field label{font-size:.7rem}
  .field input,.field select,.field textarea{padding:11px 12px;font-size:.85rem}
  .btn-submit{padding:13px;font-size:.92rem}
  .btn-audio{width:80%}
}