:root {
      --bg: #0b0f17;
      --bg2: #0a1b2e;
      --card: rgba(7, 12, 20, 0.7);
      --primary: #2b7cff;
      --primary-600: #2263cc;
      --accent: #00c2ff;
      --text: #e6f0ff;
      --muted: #8aa4c2;
      --danger: #ff6b6b;
      --success: #00d084;
      --shadow: 0 10px 30px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.04);
    }

    * { box-sizing: border-box; }
    html,body { height: 100%; }
    body {
      margin: 0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
      color: var(--text);
      background: radial-gradient(1200px 800px at 75% 10%, rgba(43,124,255,0.18), transparent 60%),
                  radial-gradient(1000px 600px at 20% 90%, rgba(0,194,255,0.18), transparent 60%),
                  linear-gradient(135deg, var(--bg), var(--bg2));
      display: grid; place-items: center; padding: 24px;
    }

    .card {
      width: 100%; max-width: 410px;
      background: var(--card);
      border: 1px solid rgba(43,124,255,0.22);
      border-radius: 18px;
      padding: 28px;
      box-shadow: var(--shadow);
      backdrop-filter: blur(12px);
      position: relative;
      overflow: hidden;
    }
    .card::before {
      content: ""; position: absolute; inset: -2px; pointer-events: none;
      background: conic-gradient(from 220deg at 50% 50%, transparent 0deg, rgba(43,124,255,.12) 90deg, rgba(0,194,255,.16) 180deg, transparent 360deg);
      filter: blur(18px);
      z-index: 0;
    }

    .header { position: relative; z-index: 1; text-align: center; margin-bottom: 22px; }
    .title { font-size: 28px; font-weight: 700; letter-spacing: .2px; margin: 0 0 6px; color: var(--text); }
    .subtitle { margin: 0; font-size: 14px; color: var(--muted); }

    form { position: relative; z-index: 1; }

    .field { position: relative; margin: 22px 0; }
    .field-inner { position: relative; }
    .input {
      width: 100%;
      padding: 16px 44px 16px 14px;
      background: rgba(255,255,255,0.02);
      border: 1px solid rgba(138,164,194,0.25);
      border-radius: 12px;
      color: var(--text);
      outline: none;
      transition: border-color .2s, box-shadow .2s, background .2s;
    }
    .input::placeholder { color: transparent; }

    .input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(43,124,255,0.2); background: rgba(255,255,255,0.04); }

    .label {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      padding: 0 6px;
      pointer-events: none;
      color: var(--muted);
      font-size: 14px;
      background: var(--card);
      transition: all .18s ease;
    }
    .input:focus + .label,
    .input:not(:placeholder-shown) + .label {
      top: -8px;
      font-size: 12px;
      color: var(--accent);
    }

    .icon-btn { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); border: 0; background: none; padding: 6px; cursor: pointer; color: var(--muted); }
    .icon-btn:hover { color: var(--text); }

    .btn {
      width: 100%;
      padding: 14px 16px; border: none; border-radius: 12px;
      background: linear-gradient(180deg, var(--primary), var(--primary-600));
      color: white; font-weight: 600; letter-spacing: .3px; cursor: pointer;
      box-shadow: 0 8px 20px rgba(43,124,255,.35);
      transition: transform .08s ease, filter .2s ease, box-shadow .2s ease;
    }
    .btn:hover { filter: brightness(1.06); box-shadow: 0 10px 24px rgba(43,124,255,.42); }
    .btn:active { transform: translateY(1px); }
    .btn:disabled { opacity: .6; cursor: not-allowed; box-shadow: none; }

    .error { color: var(--danger); font-size: 13px; margin-top: 6px; display: none; }
    .error.show { display: block; }

    .strength { height: 8px; background: rgba(138,164,194,0.24); border-radius: 999px; overflow: hidden; margin-top: 10px; }
    .bar { height: 100%; width: 0%; background: linear-gradient(90deg, #ff6b6b, #ffd93d, #00d084); transition: width .25s ease; }
    .strength-text { font-size: 12px; color: var(--muted); margin-top: 6px; }

    .footer { margin-top: 18px; font-size: 13px; text-align: center; color: var(--muted); }
    .footer a { color: var(--accent); text-decoration: none; }

    .orb { position: absolute; border-radius: 50%; filter: blur(30px); opacity: .6; animation: float 8s ease-in-out infinite; }
    .orb.blue { width: 180px; height: 180px; right: -40px; top: -40px; background: radial-gradient(circle, rgba(43,124,255,.5), transparent 60%); }
    .orb.cyan { width: 140px; height: 140px; left: -30px; bottom: -30px; background: radial-gradient(circle, rgba(0,194,255,.45), transparent 60%); animation-delay: -2s; }
    @keyframes float { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-8px) } }
  
    @keyframes pulse {
      0% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.05); opacity: 0.8; }
      100% { transform: scale(1); opacity: 1; }
    }
    .pulse-on-submit {
      animation: pulse 0.4s ease-in-out;
    }
      body { opacity: 0; transition: opacity 0.4s ease-in; }
      body.loaded { opacity: 1; }
    
    @keyframes pulse {
      0% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.05); opacity: 0.8; }
      100% { transform: scale(1); opacity: 1; }
    }
    .pulse-on-submit {
      animation: pulse 0.4s ease-in-out;
    }

/* Center login card */
body {
  display: flex;
  align-items: center;
  justify-content: center;
}