:root{
    --navy: #11203a;
    --navy-deep: #0a1626;
    --sky: #29ABE2;
    --aviation-blue: #1C6EA4;
    --charcoal: #3A3A3C;
    --cloud: #F7F9FB;
    --slate: #8B92A0;
    --line: rgba(255,255,255,0.08);
  }

  *{ box-sizing: border-box; }

  html, body{
    margin:0;
    padding:0;
    height:100%;
    background: var(--cloud);
    font-family: 'Inter', sans-serif;
    color: var(--charcoal);
  }

  .screen{
    display:grid;
    grid-template-columns: 1.05fr 1fr;
    min-height: 100vh;
  }

  /* ===== LEFT PANEL ===== */
  .panel-left{
    position:relative;
    background: radial-gradient(120% 140% at 18% 8%, #16294a 0%, var(--navy) 45%, var(--navy-deep) 100%);
    overflow:hidden;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    padding: 56px 64px;
    color: white;
  }

  .aircraft-photo{
    position:absolute;
    left:0;
    right:0;
    bottom:0;
    height:60%;
    background-image:
      linear-gradient(180deg, rgba(10,18,32,0.55) 0%, rgba(10,18,32,0.05) 45%, rgba(10,18,32,0.1) 100%),
      url("../img/bg_index.jpg");
    background-size: cover;
    background-position: center 78%;
    -webkit-mask-image: linear-gradient(to top, black 30%, transparent 96%);
    mask-image: linear-gradient(to top, black 30%, transparent 96%);
    filter: saturate(1.05);
    z-index:0;
  }

  .grid-overlay{
    position:absolute;
    inset:0;
    background-image:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), rgba(0,0,0,0.15) 75%, transparent 100%);
    pointer-events:none;
    z-index:1;
  }

  .radar{
    position:absolute;
    top:-220px;
    right:-220px;
    width:560px;
    height:560px;
    border-radius:50%;
    border:1px solid rgba(255,255,255,0.06);
    pointer-events:none;
    z-index:1;
  }
  .radar::before, .radar::after{
    content:'';
    position:absolute;
    border-radius:50%;
    border:1px solid rgba(255,255,255,0.06);
  }
  .radar::before{ top:80px; left:80px; right:80px; bottom:80px; }
  .radar::after{ top:170px; left:170px; right:170px; bottom:170px; }

  .panel-left-top{ position:relative; z-index:2; }
  .panel-left-bottom{ position:relative; z-index:2; }

  .brand-mark{
    width:150px;
    display:block;
    margin-bottom:38px;
    filter: drop-shadow(0 8px 24px rgba(0,0,0,0.35));
  }

  .eyebrow{
    font-family:'JetBrains Mono', monospace;
    font-size:12px;
    letter-spacing:0.18em;
    text-transform:uppercase;
    color: var(--sky);
    margin: 0 0 18px;
  }

  .panel-left h1{
    font-family:'Space Grotesk', sans-serif;
    font-weight:600;
    font-size: clamp(30px, 3.4vw, 42px);
    line-height:1.18;
    margin: 0 0 20px;
    max-width: 460px;
  }

  .panel-left p.lead{
    font-size:15.5px;
    line-height:1.65;
    color: rgba(231,237,245,0.72);
    max-width: 400px;
    margin:0;
  }

  /* flight path signature */
  .flight-path{
    position:relative;
    height: 120px;
    margin-top: 48px;
  }
  .flight-path svg{ width:100%; height:100%; overflow:visible; }
  .flight-line{
    fill:none;
    stroke: var(--sky);
    stroke-width:1.6;
    stroke-dasharray: 6 6;
    stroke-linecap:round;
    opacity:0.85;
    stroke-dashoffset: 0;
    animation: dash 3.2s linear infinite;
  }
  @keyframes dash{ to{ stroke-dashoffset: -240; } }
  .flight-plane{
    transform-box: fill-box;
    transform-origin: center;
    animation: fly 6s ease-in-out infinite;
  }
  @keyframes fly{
    0%{ offset-distance: 0%; }
    100%{ offset-distance: 100%; }
  }
  .plane-mover{
    offset-path: path('M4,92 C 110,92 150,18 268,18 C 360,18 392,70 470,70');
    animation: flyalong 6s ease-in-out infinite;
  }
  @keyframes flyalong{
    0%{ offset-distance:0%; }
    100%{ offset-distance:100%; }
  }

  .stat-row{
    display:flex;
    gap:40px;
    margin-top:54px;
    position:relative;
    z-index:2;
  }
  .stat-row .stat .num{
    font-family:'Space Grotesk', sans-serif;
    font-size:24px;
    font-weight:600;
    color:white;
  }
  .stat-row .stat .lbl{
    font-family:'JetBrains Mono', monospace;
    font-size:11px;
    letter-spacing:0.06em;
    color: var(--slate);
    margin-top:4px;
  }

  .panel-left-footer{
    position:relative;
    z-index:2;
    font-family:'JetBrains Mono', monospace;
    font-size:11.5px;
    color: rgba(231,237,245,0.4);
    letter-spacing:0.03em;
    display:flex;
    justify-content:space-between;
    border-top:1px solid var(--line);
    padding-top:18px;
  }

  /* ===== RIGHT PANEL ===== */
  .panel-right{
    display:flex;
    align-items:center;
    justify-content:center;
    padding: 48px;
    background: var(--cloud);
  }

  .form-wrap{
    width:100%;
    max-width:380px;
  }

  .form-wrap .form-logo{
    width:140px;
    display:block;
    margin: 0 auto 28px;
  }

  .form-wrap .top-tag{
    font-family:'JetBrains Mono', monospace;
    font-size:11px;
    letter-spacing:0.16em;
    text-transform:uppercase;
    color: var(--aviation-blue);
    margin:0 0 10px;
  }

  .form-wrap h2{
    font-family:'Space Grotesk', sans-serif;
    font-size:27px;
    font-weight:600;
    margin: 0 0 8px;
    color: var(--charcoal);
  }

  .form-wrap .sub{
    font-size:14px;
    color: var(--slate);
    margin: 0 0 36px;
    line-height:1.5;
  }

  .field{
    margin-bottom:20px;
  }

  .field label{
    display:block;
    font-size:12.5px;
    font-weight:500;
    color: var(--charcoal);
    margin-bottom:7px;
  }

  .input-shell{
    position:relative;
    display:flex;
    align-items:center;
    border:1.4px solid #DCE1E8;
    border-radius:8px;
    background:white;
    transition: border-color .15s ease, box-shadow .15s ease;
  }
  .input-shell:focus-within{
    border-color: #DCE1E8; /* volta pra cor normal, sem highlight */
    box-shadow: none;
  }
  .input-shell svg{
    margin-left:13px;
    flex-shrink:0;
    color: var(--slate);
  }
  .input-shell input{
    width:100%;
    border:none;
    outline:none;
    background:transparent;
    padding:12px 12px;
    font-size:14.5px;
    font-family:'Inter', sans-serif;
    color: var(--charcoal);
  }
  .input-shell input::placeholder{ color:#A8AEB8; }

  .toggle-pass{
    margin-right:10px;
    cursor:pointer;
    color: var(--slate);
    flex-shrink:0;
    display:flex;
  }

  .select-shell select{
    width:100%;
    border:none;
    outline:none;
    background:transparent;
    padding:12px 8px 12px 12px;
    font-size:14.5px;
    font-family:'Inter', sans-serif;
    color: var(--charcoal);
    appearance:none;
    -webkit-appearance:none;
    -moz-appearance:none;
    cursor:pointer;
  }
  .select-shell select:invalid{ color:#A8AEB8; }
  .select-shell .select-caret{
    margin-right:13px;
    flex-shrink:0;
    color: var(--slate);
    pointer-events:none;
  }

  .row-between{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin: 4px 0 28px;
    font-size:13px;
  }

  .remember{
    display:flex;
    align-items:center;
    gap:8px;
    color: var(--charcoal);
    cursor:pointer;
    user-select:none;
  }
  .remember input{
    width:15px; height:15px;
    accent-color: var(--aviation-blue);
    cursor:pointer;
  }

  .row-between a{
    color: var(--aviation-blue);
    text-decoration:none;
    font-weight:500;
  }
  .row-between a:hover{ text-decoration:underline; }

  .btn-primary{
    width:100%;
    padding:13px;
    border:none;
    border-radius:8px;
    background: linear-gradient(135deg, var(--aviation-blue), #155684);
    color:white;
    font-family:'Inter', sans-serif;
    font-weight:600;
    font-size:14.5px;
    letter-spacing:0.01em;
    cursor:pointer;
    transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
    box-shadow: 0 8px 20px rgba(28,110,164,0.28);
  }
  .btn-primary:hover{ filter:brightness(1.06); transform: translateY(-1px); }
  .btn-primary:active{ transform: translateY(0); }
  .btn-primary:focus-visible{ outline: 2px solid var(--sky); outline-offset:3px; }

  .divider{
    display:flex;
    align-items:center;
    gap:14px;
    margin: 26px 0;
    color: var(--slate);
    font-size:12px;
  }
  .divider::before, .divider::after{
    content:'';
    flex:1;
    height:1px;
    background:#E4E8ED;
  }

  .signup{
    text-align:center;
    font-size:13.5px;
    color: var(--slate);
    margin-top: 28px;
  }
  .signup a{
    color: var(--aviation-blue);
    font-weight:600;
    text-decoration:none;
  }
  .signup a:hover{ text-decoration:underline; }


  @media (prefers-reduced-motion: reduce){
    .flight-line, .plane-mover{ animation: none !important; }
  }

  @media (max-width: 920px){
    .screen{ grid-template-columns: 1fr; }
    .panel-left{ display:none; }
    .panel-right{ padding: 32px 22px; }
  }