*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f1117 0%, #1a1f2e 60%, #0d1117 100%);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.login-card {
  width: 340px;
  background: #161b22;
  border: 1px solid rgba(96,165,250,0.18);
  border-radius: 14px;
  padding: 40px 36px 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  box-shadow:
    0 0 0 1px rgba(96,165,250,0.06),
    0 0 40px rgba(96,165,250,0.08),
    0 24px 64px rgba(0,0,0,0.7);
}

.login-icon {
  width: 64px; height: 64px;
  background: rgba(96,165,250,0.1);
  border: 1px solid rgba(96,165,250,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #60a5fa;
  margin-bottom: 10px;
}

.login-title {
  font-size: 20px;
  font-weight: 700;
  color: #e6edf3;
  letter-spacing: 0.02em;
}

.login-sub {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  margin-bottom: 20px;
}

.login-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 7px;
  color: #e6edf3;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.login-input::placeholder { color: rgba(255,255,255,0.25); }
.login-input:focus {
  border-color: rgba(96,165,250,0.5);
  box-shadow: 0 0 0 3px rgba(96,165,250,0.12);
}

.login-error {
  font-size: 12px;
  color: #f85149;
  min-height: 16px;
  text-align: center;
}

.login-btn {
  width: 100%;
  padding: 10px;
  background: #1a73e8;
  border: none;
  border-radius: 7px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: background 0.15s, opacity 0.15s;
  margin-top: 2px;
}
.login-btn:hover:not(:disabled) { background: #1557b0; }
.login-btn:disabled { opacity: 0.55; cursor: not-allowed; }