.hidden { display: none !important; }

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    linear-gradient(160deg, rgba(8, 32, 64, 0.72) 0%, rgba(12, 48, 88, 0.55) 45%, rgba(20, 60, 100, 0.65) 100%),
    url('/assets/background_login.png') center center / cover no-repeat;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.28);
  padding: 32px 28px 28px;
  backdrop-filter: blur(8px);
}

.login-logo {
  display: block;
  max-width: 220px;
  width: 100%;
  height: auto;
  margin: 0 auto 16px;
}

.login-brand {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 6px;
  text-align: center;
  color: var(--win-text, #1f1f1f);
}

.login-brand span { color: var(--win-accent, #0078d4); }

.login-sub {
  font-size: 13px;
  line-height: 1.5;
  color: var(--win-text-sec, #5f5f5f);
  margin-bottom: 24px;
  text-align: center;
}

.login-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--win-text-sec, #5f5f5f);
  margin-bottom: 6px;
  margin-top: 12px;
}

.login-input { width: 100%; }

.login-error {
  margin-top: 12px;
  font-size: 13px;
  color: var(--win-danger, #d13438);
  font-weight: 600;
}

.login-warn {
  margin: 0 0 16px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.45;
  color: #7a4b00;
  background: #fff8e6;
  border: 1px solid #f0d78c;
  border-radius: 6px;
  text-align: left;
}

.login-btn {
  width: 100%;
  justify-content: center;
  margin-top: 20px;
  padding: 10px 16px;
}

#app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

#app-shell.hidden { display: none !important; }