:root {
    --bg:     #030810;
    --bg2:    #071018;
    --border: #142840;
    --accent: #00aaff;
    --green:  #00d97e;
    --red:    #ff4060;
    --text:   #c8e0f4;
    --dim:    #4a7a9b;
    --faint:  #112030;
    --font: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  body {
    background: var(--bg);
    background-image: radial-gradient(ellipse 80% 60% at 50% 0%, #0a2040 0%, var(--bg) 70%);
    color: var(--text);
    font-family: var(--font);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 100vh;
  }
  .login-logo { text-align: center; margin-bottom: 2rem; }
  .logo-glyph {
    font-size: 2.8rem; display: block; line-height: 1; margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 16px var(--accent));
  }
  .logo-name {
    color: var(--accent); font-size: 0.72rem; font-weight: 600;
    letter-spacing: 0.22em; text-transform: uppercase;
  }
  .card {
    width: min(330px, calc(100vw - 32px));
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2rem 1.75rem 1.75rem;
    position: relative;
    box-shadow: 0 0 60px rgba(0,170,255,0.05), 0 24px 48px rgba(0,0,0,0.6);
  }
  .card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    border-radius: 6px 6px 0 0;
  }
  label {
    display: block; font-size: 0.67rem; color: var(--dim);
    letter-spacing: 0.12em; text-transform: uppercase;
    margin-bottom: 0.35rem; margin-top: 1rem;
  }
  form label:first-of-type { margin-top: 0; }
  input[type=text], input[type=password] {
    width: 100%; padding: 0.55rem 0.75rem;
    background: var(--bg); border: 1px solid var(--faint); border-radius: 4px;
    color: var(--text); font-family: var(--font); font-size: 0.88rem;
    outline: none; transition: border-color 0.2s, box-shadow 0.2s;
  }
  input[type=text]:focus, input[type=password]:focus {
    border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,170,255,0.1);
  }
  .btn {
    width: 100%; padding: 0.65rem;
    background: var(--accent); border: none; border-radius: 4px;
    color: #04090e; font-family: var(--font); font-size: 0.8rem;
    cursor: pointer; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
    margin-top: 1.5rem; transition: background 0.15s, box-shadow 0.15s, transform 0.1s;
  }
  .btn:hover { background: #33bbff; box-shadow: 0 0 24px rgba(0,170,255,0.35); transform: translateY(-1px); }
  .btn:active { transform: translateY(0); }
  .error {
    color: var(--red); font-size: 0.78rem; margin-top: 1rem;
    padding: 0.5rem 0.7rem; background: rgba(255,64,96,0.08);
    border-left: 2px solid var(--red); border-radius: 2px;
  }
  .footer { margin-top: 1.5rem; color: var(--faint); font-size: 0.67rem; letter-spacing: 0.08em; }