*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0a0c10; --surface: #0f1318; --border: #1e2530;
  --accent: #00e5a0; --accent2: #0057ff; --danger: #ff4466;
  --text: #e8edf5; --muted: #5a6478;
  --mono: 'IBM Plex Mono', monospace; --display: 'Inter', sans-serif;
}
body {
  background: var(--bg); color: var(--text); font-family: var(--display);
  min-height: 100vh; min-height: 100dvh;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  padding-bottom: calc(20px + env(safe-area-inset-bottom));
}
body::before { display: none; }
body::after {
  content: ''; position: fixed; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: min(600px, 100vw); height: min(600px, 100vh);
  background: radial-gradient(ellipse, rgba(0,87,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.login-card {
  position: relative; z-index: 1;
  background: var(--surface); border: 1px solid var(--border);
  padding: clamp(24px, 6vw, 52px) clamp(20px, 5vw, 44px);
  width: 100%; max-width: 420px;
}
.login-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
}
.logo { display: flex; align-items: center; gap: 12px; margin-bottom: 36px; }
.logo-icon {
  width: 34px; height: 34px; flex-shrink: 0;
  object-fit: contain; display: block;
}
.logo-text { font-size: 17px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
.logo-sub  { font-size: 10px; font-family: var(--mono); color: var(--muted); letter-spacing: 0.15em; text-transform: uppercase; margin-top: 2px; }
h1 { font-size: clamp(22px, 5vw, 28px); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; }
.subtitle { font-size: 13px; font-family: var(--mono); color: var(--muted); margin-bottom: 32px; letter-spacing: 0.05em; }
.field { margin-bottom: 18px; }
label { display: block; font-size: 11px; font-family: var(--mono); color: var(--muted); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 8px; }
input[type="text"], input[type="password"] {
  width: 100%; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); font-family: var(--mono); font-size: 16px;
  padding: 14px 16px; outline: none; transition: border-color 0.2s;
  min-height: 52px; -webkit-appearance: none; border-radius: 0;
}
input[type="text"]:focus, input[type="password"]:focus { border-color: var(--accent); }
.btn {
  width: 100%; background: var(--accent); color: #000; border: none;
  padding: 16px; font-family: var(--display); font-size: 15px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer;
  min-height: 52px; transition: opacity 0.15s; margin-top: 4px;
  -webkit-appearance: none; border-radius: 0;
}
.btn:hover { opacity: 0.85; }
.btn:active { opacity: 0.65; transform: scale(0.99); }
.error-msg {
  background: rgba(255,68,102,0.1); border: 1px solid rgba(255,68,102,0.3);
  color: var(--danger); font-family: var(--mono); font-size: 12px;
  padding: 12px 14px; margin-bottom: 20px; letter-spacing: 0.05em;
}
.session-note { font-size: 11px; font-family: var(--mono); color: var(--muted); text-align: center; margin-top: 20px; letter-spacing: 0.05em; }